Area Code 406 — Billings, Missoula, Helena, Montana
ActiveData last updated: March 10, 2026
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| QWEST CORPORATION | 9636 | 131 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | 119 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 74 |
| ONVOY, LLC - MT | 453F | 43 |
| NEMONT TEL COOP INC | 2247 | 33 |
| MID-RIVERS TEL. COOP., INC. | 2246 | 27 |
| LEVEL 3 COMMUNICATIONS, LLC - MT | 9415 | 27 |
| 3 RIVERS TEL. COOP., INC. | 2255 | 26 |
| TRIANGLE TEL. COOP. ASSN., INC. | 2257 | 26 |
| CHARTER IP ENABLED SERVICES, LLC | 792K | 26 |
Rate Centers
BILLINGS
FORSYTH
HELENA
MISSOULA
GREATFALLS
BOZEMAN
SEELEYLAKE
KALISPELL
COLSTRIP
LIVINGSTON
BUTTE
BOULDER
EGLACIERPK
GLASGOW
CUT BANK
MILES CITY
WOLF CREEK
NEIHART
THOMPSNFLS
POTOMAC
DIXON
HAVRE
FORT SHAW
TOWNSEND
DIVIDE
ST REGIS
CONRAD
PABLO
LIMA
BELT
VALIER
MANHATTAN
LIBBY
THREEFORKS
RESERVE
WHITEHALL
DRUMMOND
COLUMBUS
JOPLIN
TROY
EUREKA
EUREKARURL
MALTA
WHSLPHRSPG
CANYON CRK
CASCADE
POLSON
ROUNDUP
REEDPOINT
ABSAROKEE
CLINTON
SWEETGRASS
NOCUT BANK
KEVINOLMNT
BROWNING
ETHRIDGE
HYSHAM
WYOLA
GLENDIVE
ROSEBUD
HUNTLEY
ALTA
LEWISTOWN
BOX ELDER
HARLEM
ROCK SPG
RUDYARD
CHINOOK
MELSTONE
HAMILTON
LINCOLN
HINSDALE
NO GLASGOW
KREMLIN
MOORE
GILDFORD
BIG SANDY
TURNER
SUPERIOR
DODSON
WESTBY
HOPPILLIAD
HUNGRYHORS
BELGRADE
SOUTHHAVRE
NO WOLF PT
SOMERS
NORTHHAVRE
HINGHAM
HAYS
DEER LODGE
COOKE CITY
VICTOR
BIGFORK
SOMILES CY
HOBSON
SHELBY
RED LODGE
SO BROADUS
GRASSRANGE
WINNETT
DEVON
SIDNEY
BROADUS
NO POPLAR
SO CHESTER
WINIFRED
POWER
ROY
CHOTEAU
FAIRFIELD
PENDROY
DUPUYER
JUDITH GAP
FLAXVILLE
DUTTON
LAME DEER
DAGMAR
CROOKEDCRK
CIRCLE
FALLON
SCOBEY
AVON
WHITEFISH
FRENCHTOWN
CULBERTSON
LAUREL
GALATNGTWY
VLINSTRLPK
SO WOLF PT
FORT PECK
SACO
RONAN
MELVILLE
NO BROADUS
JORDAN
ANACONDA
AUGUSTA
STANFORD
DENTON
RYEGATE
WSQUAW GAP
FINLEY PT
MARTINSDL
SILVERTIP
NO RYEGATE
WILSALL
BLOOMFIELD
LINDSAY
CARLYLE
BUSBY
DILLON
SWAN LAKE
FORTBENTON
HARDIN
STEVENSVL
EASTCONRAD
ELMO
HARLOWTON
TERRY
LAVINA
LODGEGRASS
WYELLOWSTN
NO PARKMAN
CHARLO
NOHINSDALE
WOLF POINT
SOUTHMALTA
BRIDGER
RAPELJE
BELFRY
FORT SMITH
BROADVIEW
FROMBERG
MOLT
WHITEWATER
HAUGAN
GRANT
ENNIS
TWINBRIDGS
HARRISON
CLYDE PARK
W GLENDIVE
WISDOM
YELLOW BAY
WARM SPG
FRAZER
LAKESIDE
DARBY
ALBERTON
GLENTANA
LARSLAN
ARLEE
ST MARY
HIGHWOOD
CARTER
GEYSER
STOCKETT
GERALDINE
RAYNESFORD
LOMA
HOTSPRINGS
FAIRVIEW
STIGNATIUS
NASHUA
BRADY
CONDON
DECKER
CHESTER
OPHEIM
NO FRANNIE
PLENTYWOOD
FROID
RIDGE
POPLAR
BAINVILLE
PLEVNA
RICHEY
LAMBERT
EKALAKA
SAVAGE
BAKER
FLAXVLRURL
SCOBEYRURL
ASHLAND
NO NASHUA
BROCKTON
MEDICINELK
OVANDO
WIBAUX
WESTSIDNEY
GARDINER
OLNEY
PLAINS
ALZADA
WISE RIVER
JACKSON
MELROSE
SHERIDAN
VIRGINIACY
NOXON
MARION
CUSTER
PHILIPSBG
S ALBERTON
POMPESPLLR
WEST BEACH
W GLACIER
COLUMBIFLS
PEERLESS
OUTLOOK
JOLIET
BIG TIMBER
SUNBURST
MUSSELSHLL
FROIDRURAL
WORDEN
WCAMPCROOK
BIRNEY
BIG SKY
Exchange Listings (NXX)
| NPA-NXX | Carrier | Rate Center | Type | LATA | Status |
|---|---|---|---|---|---|
| 406-200 | TELEPORT COMMUNICATIONS AMERICA MT - LLC | BILLINGS | Landline | 650 | active |
| 406-201 | NEW CINGULAR WIRELESS PCS, LLC | FORSYTH | Wireless | 650 | active |
| 406-202 | NEW CINGULAR WIRELESS PCS, LLC | HELENA | Wireless | 648 | active |
| 406-203 | LEVEL 3 COMMUNICATIONS, LLC - MT | MISSOULA | Landline | 648 | active |
| 406-204 | LEVEL 3 COMMUNICATIONS, LLC - MT | HELENA | Landline | 648 | active |
| 406-205 | LEVEL 3 COMMUNICATIONS, LLC - MT | GREATFALLS | Landline | 648 | active |
| 406-206 | LEVEL 3 COMMUNICATIONS, LLC - MT | BILLINGS | Landline | 650 | active |
| 406-207 | NEW CINGULAR WIRELESS PCS, LLC | MISSOULA | Wireless | 648 | active |
| 406-208 | NEW CINGULAR WIRELESS PCS, LLC | BILLINGS | Wireless | 650 | active |
| 406-209 | NEW CINGULAR WIRELESS PCS, LLC | BOZEMAN | Wireless | 650 | active |
| 406-210 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | SEELEYLAKE | Wireless | 648 | active |
| 406-212 | NEW CINGULAR WIRELESS PCS, LLC | KALISPELL | Wireless | 648 | active |
| 406-213 | LEVEL 3 COMMUNICATIONS, LLC - MT | COLSTRIP | Landline | 650 | active |
| 406-214 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | MISSOULA | Wireless | 648 | active |
| 406-215 | SKYE TELECOM LLC DBA SKYETEL | MISSOULA | VoIP | 648 | active |
| 406-216 | 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT | GREATFALLS | Landline | 648 | active |
| 406-217 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | GREATFALLS | Wireless | 648 | active |
| 406-218 | T-MOBILE USA, INC. | MISSOULA | Wireless | 648 | active |
| 406-219 | BANDWIDTH.COM CLEC, LLC - MT | BOZEMAN | Landline | 650 | active |
| 406-220 | NEW CINGULAR WIRELESS PCS, LLC | LIVINGSTON | Wireless | 650 | active |
| 406-221 | ONVOY, LLC - MT | BUTTE | Landline | 648 | active |
| 406-222 | QWEST CORPORATION | LIVINGSTON | Landline | 650 | active |
| 406-223 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | LIVINGSTON | Wireless | 650 | active |
| 406-224 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | LIVINGSTON | Wireless | 650 | active |
| 406-225 | QWEST CORPORATION | BOULDER | Landline | 648 | active |
| 406-226 | QWEST CORPORATION | EGLACIERPK | Landline | 648 | active |
| 406-227 | QWEST CORPORATION | HELENA | Landline | 648 | active |
| 406-228 | NEMONT TEL COOP INC | GLASGOW | Landline | 650 | active |
| 406-229 | NEW CINGULAR WIRELESS PCS, LLC | CUT BANK | Wireless | 648 | active |
| 406-230 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | GLASGOW | Wireless | 650 | active |
| 406-231 | NEW CINGULAR WIRELESS PCS, LLC | GREATFALLS | Wireless | 648 | active |
| 406-232 | QWEST CORPORATION | MILES CITY | Landline | 650 | active |
| 406-233 | QWEST CORPORATION | MILES CITY | Landline | 650 | active |
| 406-234 | MID-RIVERS TELEPHONE COOPERATIVE, INC. | MILES CITY | Landline | 650 | active |
| 406-235 | QWEST CORPORATION | WOLF CREEK | Landline | 648 | active |
| 406-236 | 3 RIVERS TEL. COOP., INC. | NEIHART | Landline | 648 | active |
| 406-237 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-238 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-239 | NEW CINGULAR WIRELESS PCS, LLC | MISSOULA | Wireless | 648 | active |
| 406-240 | NEW CINGULAR WIRELESS PCS, LLC | MISSOULA | Wireless | 648 | active |
| 406-241 | NEW CINGULAR WIRELESS PCS, LLC | MISSOULA | Wireless | 648 | active |
| 406-242 | NEW CINGULAR WIRELESS PCS, LLC | THOMPSNFLS | Wireless | 648 | active |
| 406-243 | QWEST CORPORATION | MISSOULA | Landline | 648 | active |
| 406-244 | BLACKFOOT TEL. COOP., INC. | POTOMAC | Landline | 648 | active |
| 406-245 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-246 | BLACKFOOT TEL. COOP., INC. | DIXON | Landline | 648 | active |
| 406-247 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-248 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-249 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | KALISPELL | Wireless | 648 | active |
| 406-250 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | KALISPELL | Wireless | 648 | active |
| 406-251 | QWEST CORPORATION | MISSOULA | Landline | 648 | active |
| 406-252 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-253 | NEW CINGULAR WIRELESS PCS, LLC | KALISPELL | Wireless | 648 | active |
| 406-254 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-255 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-256 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-257 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | KALISPELL | Landline | 648 | active |
| 406-258 | QWEST CORPORATION | MISSOULA | Landline | 648 | active |
| 406-259 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-260 | NEW CINGULAR WIRELESS PCS, LLC | KALISPELL | Wireless | 648 | active |
| 406-261 | NEW CINGULAR WIRELESS PCS, LLC | KALISPELL | Wireless | 648 | active |
| 406-262 | QWEST CORPORATION | HAVRE | Landline | 648 | active |
| 406-263 | SAGEBRUSH CELLULAR, INC. | GLASGOW | Wireless | 650 | active |
| 406-264 | 3 RIVERS TEL. COOP., INC. | FORT SHAW | Landline | 648 | active |
| 406-265 | QWEST CORPORATION | HAVRE | Landline | 648 | active |
| 406-266 | QWEST CORPORATION | TOWNSEND | Landline | 648 | active |
| 406-267 | SOUTHERN MONTANA TEL. CO. | DIVIDE | Landline | 648 | active |
| 406-268 | QWEST CORPORATION | GREATFALLS | Landline | 648 | active |
| 406-269 | NEW CINGULAR WIRELESS PCS, LLC | ST REGIS | Wireless | 648 | active |
| 406-270 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | KALISPELL | Wireless | 648 | active |
| 406-271 | 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT | CONRAD | Landline | 648 | active |
| 406-272 | ONVOY, LLC - MT | BILLINGS | Landline | 650 | active |
| 406-273 | QWEST CORPORATION | MISSOULA | Landline | 648 | active |
| 406-274 | TELEPORT COMMUNICATIONS AMERICA MT - LLC | MISSOULA | VoIP | 648 | active |
| 406-275 | RONAN TEL. CO. | PABLO | Landline | 648 | active |
| 406-276 | 3 RIVERS TEL. COOP., INC. | LIMA | Landline | 648 | active |
| 406-277 | 3 RIVERS TEL. COOP., INC. | BELT | Landline | 648 | active |
| 406-278 | QWEST CORPORATION | CONRAD | Landline | 648 | active |
| 406-279 | 3 RIVERS TEL. COOP., INC. | VALIER | Landline | 648 | active |
| 406-280 | NEW CINGULAR WIRELESS PCS, LLC | ST REGIS | Wireless | 648 | active |
| 406-281 | TELEPORT COMMUNICATIONS AMERICA MT - LLC | BILLINGS | VoIP | 650 | active |
| 406-282 | QWEST CORPORATION | MANHATTAN | Landline | 650 | active |
| 406-283 | ZIPLY FIBER MONTANA, LLC DBA ZIPLY FIBER | LIBBY | Landline | 960 | active |
| 406-284 | QWEST CORPORATION | MANHATTAN | Landline | 650 | active |
| 406-285 | QWEST CORPORATION | THREEFORKS | Landline | 650 | active |
| 406-286 | NEMONT TEL COOP INC | RESERVE | Landline | 650 | active |
| 406-287 | QWEST CORPORATION | WHITEHALL | Landline | 648 | active |
| 406-288 | BLACKFOOT TEL. COOP., INC. | DRUMMOND | Landline | 648 | active |
| 406-289 | NEW CINGULAR WIRELESS PCS, LLC | CONRAD | Wireless | 648 | active |
| 406-290 | ONVOY, LLC - MT | COLUMBUS | Landline | 650 | active |
| 406-291 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | LIBBY | Wireless | 960 | active |
| 406-292 | TRIANGLE TEL. COOP. ASSN., INC. | JOPLIN | Landline | 648 | active |
| 406-293 | ZIPLY FIBER MONTANA, LLC DBA ZIPLY FIBER | LIBBY | Landline | 960 | active |
| 406-294 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | BILLINGS | Landline | 650 | active |
| 406-295 | ZIPLY FIBER MONTANA, LLC DBA ZIPLY FIBER | TROY | Landline | 960 | active |
| 406-296 | ZIPLY FIBER MONTANA, LLC DBA ZIPLY FIBER | EUREKA | Landline | 960 | active |
| 406-297 | INTERBEL TELEPHONE COOPERATIVE, INC. - MT | EUREKARURL | Landline | 648 | active |
| 406-298 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | COLUMBUS | Wireless | 650 | active |
| 406-299 | LEVEL 3 COMMUNICATIONS, LLC - MT | BUTTE | Landline | 648 | active |
| 406-300 | CHARTER IP ENABLED SERVICES, LLC | KALISPELL | VoIP | 648 | active |
| 406-301 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | MALTA | Wireless | 648 | active |
| 406-302 | ONVOY, LLC - MT | WOLF CREEK | Landline | 648 | active |
| 406-303 | TELEPORT COMMUNICATIONS AMERICA MT - LLC | MISSOULA | Landline | 648 | active |
| 406-304 | T-MOBILE USA, INC. | MISSOULA | Wireless | 648 | active |
| 406-305 | NEW CINGULAR WIRELESS PCS, LLC | WHSLPHRSPG | Wireless | 650 | active |
| 406-306 | ONVOY, LLC - MT | MANHATTAN | Landline | 650 | active |
| 406-307 | CHARTER IP ENABLED SERVICES, LLC | CANYON CRK | VoIP | 648 | active |
| 406-308 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | CASCADE | Wireless | 648 | active |
| 406-309 | CHARTER IP ENABLED SERVICES, LLC | KALISPELL | VoIP | 648 | active |
| 406-310 | BLACKFOOT COMMUNICATIONS, INC. - MT | BUTTE | Landline | 648 | active |
| 406-312 | NUSO, LLC | BOZEMAN | VoIP | 650 | active |
| 406-313 | ONVOY, LLC - MT | BOULDER | Landline | 648 | active |
| 406-314 | NEW CINGULAR WIRELESS PCS, LLC | KALISPELL | Wireless | 648 | active |
| 406-315 | SAGEBRUSH CELLULAR, INC. | GREATFALLS | Wireless | 648 | active |
| 406-316 | ONVOY, LLC - MT | BOULDER | Landline | 648 | active |
| 406-317 | TELNYX LLC | MISSOULA | VoIP | 648 | active |
| 406-318 | ONVOY, LLC - MT | BILLINGS | Landline | 650 | active |
| 406-319 | CHARTER IP ENABLED SERVICES, LLC | POLSON | VoIP | 648 | active |
| 406-320 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | ROUNDUP | Wireless | 650 | active |
| 406-321 | NEW CINGULAR WIRELESS PCS, LLC | COLUMBUS | Wireless | 650 | active |
| 406-322 | QWEST CORPORATION | COLUMBUS | Landline | 650 | active |
| 406-323 | MID-RIVERS TEL. COOP., INC. | ROUNDUP | Landline | 650 | active |
| 406-324 | QWEST CORPORATION | HELENA | Landline | 648 | active |
| 406-325 | NUSO, LLC | BILLINGS | VoIP | 650 | active |
| 406-326 | TRIANGLE TEL. COOP. ASSN., INC. | REEDPOINT | Landline | 650 | active |
| 406-327 | QWEST CORPORATION | MISSOULA | Landline | 648 | active |
| 406-328 | PROJECT TEL. CO., INC. | ABSAROKEE | Landline | 650 | active |
| 406-329 | QWEST CORPORATION | MISSOULA | Landline | 648 | active |
| 406-330 | CHARTER IP ENABLED SERVICES, LLC | CLINTON | VoIP | 648 | active |
| 406-331 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | ROUNDUP | Wireless | 650 | active |
| 406-332 | BLACKFOOT TEL. COOP., INC. | PABLO | Landline | 648 | active |
| 406-333 | QWEST CORPORATION | LIVINGSTON | Landline | 650 | active |
| 406-334 | NEW CINGULAR WIRELESS PCS, LLC | LIBBY | Wireless | 960 | active |
| 406-335 | NORTHERN TEL. COOP., INC. | SWEETGRASS | Landline | 648 | active |
| 406-336 | NORTHERN TEL. COOP., INC. | NOCUT BANK | Landline | 648 | active |
| 406-337 | NORTHERN TEL. COOP., INC. | KEVINOLMNT | Landline | 648 | active |
| 406-338 | SIYEH COMMUNICATIONS | BROWNING | Landline | 648 | active |
| 406-339 | NORTHERN TEL. COOP., INC. | ETHRIDGE | Landline | 648 | active |
| 406-340 | NEW CINGULAR WIRELESS PCS, LLC | LIMA | Wireless | 648 | active |
| 406-341 | ONVOY, LLC - MT | MANHATTAN | Landline | 650 | active |
| 406-342 | RANGE TEL COOP INC | HYSHAM | Landline | 650 | active |
| 406-343 | PROJECT TEL. CO., INC. | WYOLA | Landline | 650 | active |
| 406-344 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | HAVRE | Wireless | 648 | active |
| 406-345 | MID-RIVERS TELEPHONE COOPERATIVE, INC. | GLENDIVE | Landline | 650 | active |
| 406-346 | RANGE TELEPHONE COOPERATIVE, INC. - MT | FORSYTH | Landline | 650 | active |
| 406-347 | RANGE TEL COOP INC | ROSEBUD | Landline | 650 | active |
| 406-348 | PROJECT TEL. CO., INC. | HUNTLEY | Landline | 650 | active |
| 406-349 | BLACKFOOT TEL. COOP., INC. | ALTA | Landline | 648 | active |
| 406-350 | NEW CINGULAR WIRELESS PCS, LLC | LEWISTOWN | Wireless | 648 | active |
| 406-351 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | FORSYTH | Wireless | 650 | active |
| 406-352 | TRIANGLE TEL. COOP. ASSN., INC. | BOX ELDER | Landline | 648 | active |
| 406-353 | TRIANGLE TEL. COOP. ASSN., INC. | HARLEM | Landline | 648 | active |
| 406-354 | MID-RIVERS TEL. COOP., INC. | ROCK SPG | Landline | 650 | active |
| 406-355 | TRIANGLE TEL. COOP. ASSN., INC. | RUDYARD | Landline | 648 | active |
| 406-356 | QWEST CORPORATION | FORSYTH | Landline | 650 | active |
| 406-357 | TRIANGLE TEL. COOP. ASSN., INC. | CHINOOK | Landline | 648 | active |
| 406-358 | MID-RIVERS TEL. COOP., INC. | MELSTONE | Landline | 650 | active |
| 406-359 | QWEST CORPORATION | GLENDIVE | Landline | 650 | active |
| 406-360 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | HAMILTON | Wireless | 648 | active |
| 406-361 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | HAMILTON | Wireless | 648 | active |
| 406-362 | LINCOLN TEL. CO., INC. | LINCOLN | Landline | 648 | active |
| 406-363 | QWEST CORPORATION | HAMILTON | Landline | 648 | active |
| 406-364 | NEMONT TEL COOP INC | HINSDALE | Landline | 650 | active |
| 406-365 | QWEST CORPORATION | GLENDIVE | Landline | 650 | active |
| 406-366 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | LEWISTOWN | Wireless | 648 | active |
| 406-367 | NEMONT TEL COOP INC | NO GLASGOW | Landline | 650 | active |
| 406-368 | LINCOLN TEL. CO., INC. | CANYON CRK | Landline | 648 | active |
| 406-369 | NEW CINGULAR WIRELESS PCS, LLC | HAMILTON | Wireless | 648 | active |
| 406-370 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | MISSOULA | Wireless | 648 | active |
| 406-371 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | BILLINGS | Landline | 650 | active |
| 406-372 | TRIANGLE TEL. COOP. ASSN., INC. | KREMLIN | Landline | 648 | active |
| 406-373 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-374 | TRIANGLE TEL. COOP. ASSN., INC. | MOORE | Landline | 648 | active |
| 406-375 | QWEST CORPORATION | HAMILTON | Landline | 648 | active |
| 406-376 | TRIANGLE TEL. COOP. ASSN., INC. | GILDFORD | Landline | 648 | active |
| 406-377 | MID-RIVERS TELEPHONE COOPERATIVE, INC. | GLENDIVE | Landline | 650 | active |
| 406-378 | TRIANGLE TEL. COOP. ASSN., INC. | BIG SANDY | Landline | 648 | active |
| 406-379 | TRIANGLE TEL. COOP. ASSN., INC. | TURNER | Landline | 648 | active |
| 406-380 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | LEWISTOWN | Wireless | 648 | active |
| 406-381 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | HAMILTON | Wireless | 648 | active |
| 406-382 | NEW CINGULAR WIRELESS PCS, LLC | SUPERIOR | Wireless | 648 | active |
| 406-383 | TRIANGLE TEL. COOP. ASSN., INC. | DODSON | Landline | 648 | active |
| 406-384 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | BILLINGS | Landline | 650 | active |
| 406-385 | NEMONT TEL COOP INC | WESTBY | Landline | 650 | active |
| 406-386 | TRIANGLE TEL. COOP. ASSN., INC. | HOPPILLIAD | Landline | 648 | active |
| 406-387 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | HUNGRYHORS | Landline | 648 | active |
| 406-388 | QWEST CORPORATION | BELGRADE | Landline | 650 | active |
| 406-389 | CENTURYLINK COMMUNICATIONS, LLC | HELENA | VoIP | 648 | active |
| 406-390 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | SOUTHHAVRE | Wireless | 648 | active |
| 406-391 | NEW CINGULAR WIRELESS PCS, LLC | CUT BANK | Wireless | 648 | active |
| 406-392 | NEMONT TEL COOP INC | NO WOLF PT | Landline | 650 | active |
| 406-393 | CHARTER IP ENABLED SERVICES, LLC | SOMERS | VoIP | 648 | active |
| 406-394 | TRIANGLE TEL. COOP. ASSN., INC. | NORTHHAVRE | Landline | 648 | active |
| 406-395 | TRIANGLE TEL. COOP. ASSN., INC. | SOUTHHAVRE | Landline | 648 | active |
| 406-396 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | MISSOULA | Wireless | 648 | active |
| 406-397 | TRIANGLE TEL. COOP. ASSN., INC. | HINGHAM | Landline | 648 | active |
| 406-398 | TRIANGLE TEL. COOP. ASSN., INC. | NORTHHAVRE | Landline | 648 | active |
| 406-399 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | SOUTHHAVRE | Wireless | 648 | active |
| 406-400 | TRIANGLE COMMUNICATION SYSTEM, INC. - MT- | HAVRE | Landline | 648 | active |
| 406-401 | CSC WIRELESS, LLC | GREATFALLS | Wireless | 648 | active |
| 406-402 | T-MOBILE USA, INC. | GREATFALLS | Wireless | 648 | active |
| 406-403 | ONVOY, LLC - MT | GREATFALLS | Landline | 648 | active |
| 406-404 | CHARTER IP ENABLED SERVICES, LLC | BOZEMAN | VoIP | 650 | active |
| 406-405 | ONVOY, LLC - MT | LIBBY | Landline | 960 | active |
| 406-406 | LIVEWIRE TELECOM, LLC | MISSOULA | Landline | 648 | active |
| 406-407 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | KALISPELL | Wireless | 648 | active |
| 406-408 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | HAYS | Wireless | 648 | active |
| 406-409 | CSC WIRELESS, LLC | BILLINGS | Wireless | 650 | active |
| 406-410 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | HELENA | Wireless | 648 | active |
| 406-412 | ONVOY, LLC - MT | BILLINGS | Landline | 650 | active |
| 406-413 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-414 | QWEST CORPORATION | BOZEMAN | Landline | 650 | active |
| 406-415 | CHARTER IP ENABLED SERVICES, LLC | DEER LODGE | VoIP | 648 | active |
| 406-416 | ONVOY, LLC - MT | FORSYTH | Landline | 650 | active |
| 406-417 | NEW CINGULAR WIRELESS PCS, LLC | HELENA | Wireless | 648 | active |
| 406-418 | ONVOY, LLC - MT | COOKE CITY | Landline | 650 | active |
| 406-419 | ONVOY, LLC - MT | VICTOR | Landline | 648 | active |
| 406-420 | CHARTER IP ENABLED SERVICES, LLC | BIGFORK | VoIP | 648 | active |
| 406-421 | RANGE TEL COOP INC | SOMILES CY | Landline | 650 | active |
| 406-422 | CHARTER IP ENABLED SERVICES, LLC | HELENA | VoIP | 648 | active |
| 406-423 | TRIANGLE TEL. COOP. ASSN., INC. | HOBSON | Landline | 648 | active |
| 406-424 | 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT | SHELBY | Landline | 648 | active |
| 406-425 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | RED LODGE | Wireless | 650 | active |
| 406-426 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | RED LODGE | Wireless | 650 | active |
| 406-427 | RANGE TEL COOP INC | SO BROADUS | Landline | 650 | active |
| 406-428 | MID-RIVERS TEL. COOP., INC. | GRASSRANGE | Landline | 650 | active |
| 406-429 | MID-RIVERS TEL. COOP., INC. | WINNETT | Landline | 650 | active |
| 406-430 | ONVOY, LLC - MT | HELENA | Landline | 648 | active |
| 406-431 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | HELENA | Wireless | 648 | active |
| 406-432 | NORTHERN TEL. COOP., INC. | DEVON | Landline | 648 | active |
| 406-433 | MID-RIVERS TELEPHONE COOPERATIVE, INC. | SIDNEY | Landline | 650 | active |
| 406-434 | QWEST CORPORATION | SHELBY | Landline | 648 | active |
| 406-435 | TDS METROCOM, LLC | BILLINGS | Landline | 650 | active |
| 406-436 | RANGE TEL COOP INC | BROADUS | Landline | 650 | active |
| 406-437 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | HELENA | Landline | 648 | active |
| 406-438 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | HELENA | Wireless | 648 | active |
| 406-439 | NEW CINGULAR WIRELESS PCS, LLC | HELENA | Wireless | 648 | active |
| 406-440 | 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT | HELENA | Landline | 648 | active |
| 406-441 | QWEST CORPORATION | HELENA | Landline | 648 | active |
| 406-442 | QWEST CORPORATION | HELENA | Landline | 648 | active |
| 406-443 | QWEST CORPORATION | HELENA | Landline | 648 | active |
| 406-444 | QWEST CORPORATION | HELENA | Landline | 648 | active |
| 406-445 | QWEST CORPORATION | RED LODGE | Landline | 650 | active |
| 406-446 | QWEST CORPORATION | RED LODGE | Landline | 650 | active |
| 406-447 | QWEST CORPORATION | HELENA | Landline | 648 | active |
| 406-448 | NEMONT TEL COOP INC | NO POPLAR | Landline | 650 | active |
| 406-449 | QWEST CORPORATION | HELENA | Landline | 648 | active |
| 406-450 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | SHELBY | Wireless | 648 | active |
| 406-451 | T-MOBILE USA, INC. | BOZEMAN | Wireless | 650 | active |
| 406-452 | QWEST CORPORATION | GREATFALLS | Landline | 648 | active |
| 406-453 | QWEST CORPORATION | GREATFALLS | Landline | 648 | active |
| 406-454 | QWEST CORPORATION | GREATFALLS | Landline | 648 | active |
| 406-455 | YORKSTREAM COMMUNICATIONS LLC | GREATFALLS | Landline | 648 | active |
| 406-456 | TRIANGLE TEL. COOP. ASSN., INC. | SO CHESTER | Landline | 648 | active |
| 406-457 | QWEST CORPORATION | HELENA | Landline | 648 | active |
| 406-458 | QWEST CORPORATION | HELENA | Landline | 648 | active |
| 406-459 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | HELENA | Wireless | 648 | active |
| 406-460 | NEW CINGULAR WIRELESS PCS, LLC | SHELBY | Wireless | 648 | active |
| 406-461 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | HELENA | Wireless | 648 | active |
| 406-462 | TRIANGLE TEL. COOP. ASSN., INC. | WINIFRED | Landline | 648 | active |
| 406-463 | 3 RIVERS TEL. COOP., INC. | POWER | Landline | 648 | active |
| 406-464 | MID-RIVERS TEL. COOP., INC. | ROY | Landline | 650 | active |
| 406-465 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | HELENA | Wireless | 648 | active |
| 406-466 | 3 RIVERS TEL. COOP., INC. | CHOTEAU | Landline | 648 | active |
| 406-467 | 3 RIVERS TEL. COOP., INC. | FAIRFIELD | Landline | 648 | active |
| 406-468 | QWEST CORPORATION | CASCADE | Landline | 648 | active |
| 406-469 | 3 RIVERS TEL. COOP., INC. | PENDROY | Landline | 648 | active |
| 406-470 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | SHELBY | Wireless | 648 | active |
| 406-471 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | KALISPELL | Wireless | 648 | active |
| 406-472 | 3 RIVERS TEL. COOP., INC. | DUPUYER | Landline | 648 | active |
| 406-473 | TRIANGLE TEL. COOP. ASSN., INC. | JUDITH GAP | Landline | 648 | active |
| 406-474 | NEMONT TEL COOP INC | FLAXVILLE | Landline | 650 | active |
| 406-475 | QWEST CORPORATION | HELENA | Landline | 648 | active |
| 406-476 | QWEST CORPORATION | DUTTON | Landline | 648 | active |
| 406-477 | RANGE TEL COOP INC | LAME DEER | Landline | 650 | active |
| 406-478 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | SIDNEY | Wireless | 650 | active |
| 406-479 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BUTTE | Wireless | 648 | active |
| 406-480 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | SIDNEY | Wireless | 650 | active |
| 406-481 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | MISSOULA | Wireless | 648 | active |
| 406-482 | QWEST CORPORATION | SIDNEY | Landline | 650 | active |
| 406-483 | NEMONT TEL COOP INC | DAGMAR | Landline | 650 | active |
| 406-484 | TRI-COUNTY TEL. ASSN., INC. | CROOKEDCRK | Landline | 654 | active |
| 406-485 | MID-RIVERS TEL. COOP., INC. | CIRCLE | Landline | 650 | active |
| 406-486 | MID-RIVERS TEL. COOP., INC. | FALLON | Landline | 650 | active |
| 406-487 | NEMONT TEL COOP INC | SCOBEY | Landline | 650 | active |
| 406-488 | MID-RIVERS TELEPHONE COOPERATIVE, INC. | SIDNEY | Landline | 650 | active |
| 406-489 | NEW CINGULAR WIRELESS PCS, LLC | SIDNEY | Wireless | 650 | active |
| 406-490 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BUTTE | Wireless | 648 | active |
| 406-491 | NEW CINGULAR WIRELESS PCS, LLC | BUTTE | Wireless | 648 | active |
| 406-492 | BLACKFOOT TEL. COOP., INC. | AVON | Landline | 648 | active |
| 406-493 | CHARTER IP ENABLED SERVICES, LLC | MISSOULA | VoIP | 648 | active |
| 406-494 | QWEST CORPORATION | BUTTE | Landline | 648 | active |
| 406-495 | QWEST CORPORATION | HELENA | Landline | 648 | active |
| 406-496 | QWEST CORPORATION | BUTTE | Landline | 648 | active |
| 406-497 | QWEST CORPORATION | BUTTE | Landline | 648 | active |
| 406-498 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BUTTE | Wireless | 648 | active |
| 406-499 | NEW CINGULAR WIRELESS PCS, LLC | SEELEYLAKE | Wireless | 648 | active |
| 406-500 | FRACTEL, LLC | BILLINGS | VoIP | 650 | active |
| 406-501 | ONVOY, LLC - MT | WHITEHALL | Landline | 648 | active |
| 406-502 | CHARTER IP ENABLED SERVICES, LLC | HELENA | VoIP | 648 | active |
| 406-503 | COMCAST IP PHONE, LLC | BILLINGS | VoIP | 650 | active |
| 406-504 | LEVEL 3 COMMUNICATIONS, LLC - MT | FAIRFIELD | Landline | 648 | active |
| 406-505 | NEW CINGULAR WIRELESS PCS, LLC | CONRAD | Wireless | 648 | active |
| 406-506 | HD CARRIER LLC | BILLINGS | VoIP | 650 | active |
| 406-507 | LEVEL 3 COMMUNICATIONS, LLC - MT | WHITEFISH | Landline | 648 | active |
| 406-508 | LEVEL 3 COMMUNICATIONS, LLC - MT | FRENCHTOWN | Landline | 648 | active |
| 406-509 | Landline | active | |||
| 406-510 | ONVOY, LLC - MT | MISSOULA | Landline | 648 | active |
| 406-512 | LEVEL 3 COMMUNICATIONS, LLC - MT | BOULDER | Landline | 648 | active |
| 406-513 | CHARTER IP ENABLED SERVICES, LLC | HELENA | VoIP | 648 | active |
| 406-514 | NEW CINGULAR WIRELESS PCS, LLC | CULBERTSON | Wireless | 650 | active |
| 406-515 | NEW CINGULAR WIRELESS PCS, LLC | SUPERIOR | Wireless | 648 | active |
| 406-516 | BOOST SUBSCRIBERCO L.L.C. | LAUREL | Wireless | 650 | active |
| 406-517 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | LIVINGSTON | Wireless | 650 | active |
| 406-518 | ONVOY, LLC - MT | GALATNGTWY | Landline | 650 | active |
| 406-519 | IP HORIZON LLC | MISSOULA | VoIP | 648 | active |
| 406-520 | HD CARRIER LLC | ABSAROKEE | VoIP | 650 | active |
| 406-521 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | TOWNSEND | Wireless | 648 | active |
| 406-522 | QWEST CORPORATION | BOZEMAN | Landline | 650 | active |
| 406-523 | QWEST CORPORATION | MISSOULA | Landline | 648 | active |
| 406-524 | NEMONT TEL COOP INC | VLINSTRLPK | Landline | 650 | active |
| 406-525 | MID-RIVERS TEL. COOP., INC. | SO WOLF PT | Landline | 650 | active |
| 406-526 | NEMONT TEL COOP INC | FORT PECK | Landline | 650 | active |
| 406-527 | NEMONT TEL COOP INC | SACO | Landline | 650 | active |
| 406-528 | RONAN TEL. CO. | RONAN | Landline | 648 | active |
| 406-529 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | MISSOULA | Wireless | 648 | active |
| 406-530 | LEVEL 3 COMMUNICATIONS, LLC - MT | LAUREL | Landline | 650 | active |
| 406-531 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | MISSOULA | Wireless | 648 | active |
| 406-532 | BLACKFOOT COMMUNICATIONS, INC. - MT | MISSOULA | Landline | 648 | active |
| 406-533 | QWEST CORPORATION | BUTTE | Landline | 648 | active |
| 406-534 | CHARTER IP ENABLED SERVICES, LLC | BILLINGS | VoIP | 650 | active |
| 406-535 | MID-RIVERS TELEPHONE COOPERATIVE, INC. | LEWISTOWN | Landline | 648 | active |
| 406-536 | NEW CINGULAR WIRELESS PCS, LLC | BOZEMAN | Wireless | 650 | active |
| 406-537 | TRIANGLE TEL. COOP. ASSN., INC. | MELVILLE | Landline | 650 | active |
| 406-538 | QWEST CORPORATION | LEWISTOWN | Landline | 648 | active |
| 406-539 | NEW CINGULAR WIRELESS PCS, LLC | BOZEMAN | Wireless | 650 | active |
| 406-540 | ONVOY, LLC - MT | MISSOULA | Landline | 648 | active |
| 406-541 | BLACKFOOT COMMUNICATIONS, INC. - MT | MISSOULA | Landline | 648 | active |
| 406-542 | QWEST CORPORATION | MISSOULA | Landline | 648 | active |
| 406-543 | QWEST CORPORATION | MISSOULA | Landline | 648 | active |
| 406-544 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | MISSOULA | Wireless | 648 | active |
| 406-545 | LEVEL 3 COMMUNICATIONS, LLC - MT | BILLINGS | Landline | 650 | active |
| 406-546 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | MISSOULA | Wireless | 648 | active |
| 406-547 | TRIANGLE TEL. COOP. ASSN., INC. | WHSLPHRSPG | Landline | 650 | active |
| 406-548 | QWEST CORPORATION | BOZEMAN | Landline | 650 | active |
| 406-549 | QWEST CORPORATION | MISSOULA | Landline | 648 | active |
| 406-550 | NUSO, LLC | MISSOULA | VoIP | 648 | active |
| 406-551 | LEVEL 3 COMMUNICATIONS, LLC - MT | BOZEMAN | Landline | 650 | active |
| 406-552 | LEVEL 3 COMMUNICATIONS, LLC - MT | MISSOULA | Landline | 648 | active |
| 406-553 | NEW CINGULAR WIRELESS PCS, LLC | DIVIDE | Wireless | 648 | active |
| 406-554 | RANGE TEL COOP INC | NO BROADUS | Landline | 650 | active |
| 406-556 | QWEST CORPORATION | BOZEMAN | Landline | 650 | active |
| 406-557 | MID-RIVERS TEL. COOP., INC. | JORDAN | Landline | 650 | active |
| 406-558 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | HELENA | Landline | 648 | active |
| 406-559 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | ANACONDA | Wireless | 648 | active |
| 406-560 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | ANACONDA | Wireless | 648 | active |
| 406-561 | T-MOBILE USA, INC. | BILLINGS | Wireless | 650 | active |
| 406-562 | 3 RIVERS TEL. COOP., INC. | AUGUSTA | Landline | 648 | active |
| 406-563 | QWEST CORPORATION | ANACONDA | Landline | 648 | active |
| 406-564 | LEVEL 3 COMMUNICATIONS, LLC - MT | GREATFALLS | Landline | 648 | active |
| 406-565 | LEVEL 3 COMMUNICATIONS, LLC - MT | BUTTE | Landline | 648 | active |
| 406-566 | TRIANGLE TEL. COOP. ASSN., INC. | STANFORD | Landline | 648 | active |
| 406-567 | TRIANGLE TEL. COOP. ASSN., INC. | DENTON | Landline | 648 | active |
| 406-568 | MID-RIVERS TEL. COOP., INC. | RYEGATE | Landline | 650 | active |
| 406-569 | RESERVATION TEL. COOP. | WSQUAW GAP | Landline | 638 | active |
| 406-570 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BOZEMAN | Wireless | 650 | active |
| 406-571 | CHARTER IP ENABLED SERVICES, LLC | FINLEY PT | VoIP | 648 | active |
| 406-572 | TRIANGLE TEL. COOP. ASSN., INC. | MARTINSDL | Landline | 650 | active |
| 406-573 | SIYEH COMMUNICATIONS | BROWNING | Landline | 648 | active |
| 406-574 | QWEST CORPORATION | SILVERTIP | Landline | 654 | active |
| 406-575 | MID-RIVERS TEL. COOP., INC. | NO RYEGATE | Landline | 650 | active |
| 406-576 | NEW CINGULAR WIRELESS PCS, LLC | CONRAD | Wireless | 648 | active |
| 406-577 | ONVOY, LLC - MT | BOZEMAN | Landline | 650 | active |
| 406-578 | QWEST CORPORATION | WILSALL | Landline | 650 | active |
| 406-579 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BOZEMAN | Wireless | 650 | active |
| 406-580 | NEW CINGULAR WIRELESS PCS, LLC | BOZEMAN | Wireless | 650 | active |
| 406-581 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BOZEMAN | Wireless | 650 | active |
| 406-582 | QWEST CORPORATION | BOZEMAN | Landline | 650 | active |
| 406-583 | MID-RIVERS TEL. COOP., INC. | BLOOMFIELD | Landline | 650 | active |
| 406-584 | MID-RIVERS TEL. COOP., INC. | LINDSAY | Landline | 650 | active |
| 406-585 | QWEST CORPORATION | BOZEMAN | Landline | 650 | active |
| 406-586 | QWEST CORPORATION | BOZEMAN | Landline | 650 | active |
| 406-587 | QWEST CORPORATION | BOZEMAN | Landline | 650 | active |
| 406-588 | MID-RIVERS TEL. COOP., INC. | CARLYLE | Landline | 650 | active |
| 406-589 | T-MOBILE USA, INC. | BOZEMAN | Wireless | 650 | active |
| 406-590 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | GREATFALLS | Wireless | 648 | active |
| 406-591 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BILLINGS | Wireless | 650 | active |
| 406-592 | RANGE TEL COOP INC | BUSBY | Landline | 650 | active |
| 406-593 | NEW CINGULAR WIRELESS PCS, LLC | BUTTE | Wireless | 648 | active |
| 406-594 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | HELENA | Wireless | 648 | active |
| 406-595 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BOZEMAN | Wireless | 650 | active |
| 406-596 | NEW CINGULAR WIRELESS PCS, LLC | DILLON | Wireless | 648 | active |
| 406-597 | NEW CINGULAR WIRELESS PCS, LLC | SHELBY | Wireless | 648 | active |
| 406-598 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BILLINGS | Wireless | 650 | active |
| 406-599 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BOZEMAN | Wireless | 650 | active |
| 406-600 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BOZEMAN | Wireless | 650 | active |
| 406-601 | BLACKFOOT COMMUNICATIONS, INC. - MT | BILLINGS | Landline | 650 | active |
| 406-602 | BLACKFOOT COMMUNICATIONS, INC. - MT | BOZEMAN | Landline | 650 | active |
| 406-603 | BLACKFOOT COMMUNICATIONS, INC. - MT | HELENA | Landline | 648 | active |
| 406-604 | BLACKFOOT COMMUNICATIONS, INC. - MT | GREATFALLS | Landline | 648 | active |
| 406-605 | TELNYX LLC | BUTTE | VoIP | 648 | active |
| 406-606 | TRI TEL, INC. - MT | BILLINGS | Landline | 650 | active |
| 406-607 | BLACKFOOT COMMUNICATIONS, INC. - MT | KALISPELL | Landline | 648 | active |
| 406-608 | IP HORIZON LLC | BILLINGS | VoIP | 650 | active |
| 406-609 | NEW CINGULAR WIRELESS PCS, LLC | KALISPELL | Wireless | 648 | active |
| 406-610 | NEW CINGULAR WIRELESS PCS, LLC | MISSOULA | Wireless | 648 | active |
| 406-612 | ONVOY, LLC - MT | SWAN LAKE | Landline | 648 | active |
| 406-613 | CENTURYLINK COMMUNICATIONS, LLC | BOZEMAN | VoIP | 650 | active |
| 406-614 | ONVOY, LLC - MT | BIGFORK | Landline | 648 | active |
| 406-615 | WESTERN MONTANA COMMUNITYTEL INC. - MT | THOMPSNFLS | Landline | 648 | active |
| 406-616 | ONVOY, LLC - MT | THREEFORKS | Landline | 650 | active |
| 406-617 | NEW CINGULAR WIRELESS PCS, LLC | BILLINGS | Wireless | 650 | active |
| 406-618 | TDS METROCOM, LLC | MISSOULA | Landline | active | |
| 406-619 | Landline | active | |||
| 406-620 | SAGEBRUSH CELLULAR, INC. | BILLINGS | Wireless | 650 | active |
| 406-621 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | FORTBENTON | Wireless | 648 | active |
| 406-622 | TRIANGLE TEL. COOP. ASSN., INC. | FORTBENTON | Landline | 648 | active |
| 406-623 | COMMIO, LLC | HARDIN | VoIP | 650 | active |
| 406-624 | MONTANA OPTICOM, LLC - MT | BOZEMAN | Landline | 650 | active |
| 406-625 | AT&T - LOCAL | STEVENSVL | Landline | 648 | active |
| 406-626 | QWEST CORPORATION | FRENCHTOWN | Landline | 648 | active |
| 406-627 | 3 RIVERS TEL. COOP., INC. | EASTCONRAD | Landline | 648 | active |
| 406-628 | QWEST CORPORATION | LAUREL | Landline | 650 | active |
| 406-629 | ONVOY, LLC - MT | HARDIN | Landline | 650 | active |
| 406-630 | LEVEL 3 COMMUNICATIONS, LLC - MT | SIDNEY | Landline | 650 | active |
| 406-631 | ONVOY, LLC - MT | ELMO | Landline | 648 | active |
| 406-632 | TRIANGLE TEL. COOP. ASSN., INC. | HARLOWTON | Landline | 650 | active |
| 406-633 | QWEST CORPORATION | LAUREL | Landline | 650 | active |
| 406-634 | ONVOY, LLC - MT | HELENA | Landline | 648 | active |
| 406-635 | MID-RIVERS TEL. COOP., INC. | TERRY | Landline | 650 | active |
| 406-636 | MID-RIVERS TEL. COOP., INC. | LAVINA | Landline | 650 | active |
| 406-637 | QWEST CORPORATION | TERRY | Landline | 650 | active |
| 406-638 | PROJECT TEL. CO., INC. | HARDIN | Landline | 650 | active |
| 406-639 | PROJECT TEL. CO., INC. | LODGEGRASS | Landline | 650 | active |
| 406-640 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | WYELLOWSTN | Wireless | 650 | active |
| 406-641 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | WYELLOWSTN | Wireless | 650 | active |
| 406-642 | QWEST CORPORATION | VICTOR | Landline | 648 | active |
| 406-643 | ONVOY, LLC - MT | NO PARKMAN | Landline | 654 | active |
| 406-644 | BLACKFOOT TEL. COOP., INC. | CHARLO | Landline | 648 | active |
| 406-645 | ONVOY, LLC - MT | DEER LODGE | Landline | 648 | active |
| 406-646 | QWEST CORPORATION | WYELLOWSTN | Landline | 650 | active |
| 406-647 | BANDWIDTH.COM CLEC, LLC - MT | BILLINGS | VoIP | 650 | active |
| 406-648 | NEMONT TEL COOP INC | NOHINSDALE | Landline | 650 | active |
| 406-649 | BLACKFOOT TEL. COOP., INC. | ST REGIS | Landline | 648 | active |
| 406-650 | SAGEBRUSH CELLULAR, INC. | WOLF POINT | Wireless | 650 | active |
| 406-651 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-652 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-653 | NEMONT TEL COOP INC | WOLF POINT | Landline | 650 | active |
| 406-654 | TRIANGLE TEL. COOP. ASSN., INC. | MALTA | Landline | 648 | active |
| 406-655 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-656 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-657 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-658 | TRIANGLE TEL. COOP. ASSN., INC. | SOUTHMALTA | Landline | 648 | active |
| 406-659 | QWEST CORPORATION | NO PARKMAN | Landline | 654 | active |
| 406-660 | NEW CINGULAR WIRELESS PCS, LLC | DILLON | Wireless | 648 | active |
| 406-661 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BILLINGS | Wireless | 650 | active |
| 406-662 | QWEST CORPORATION | BRIDGER | Landline | 650 | active |
| 406-663 | TRIANGLE TEL. COOP. ASSN., INC. | RAPELJE | Landline | 650 | active |
| 406-664 | PROJECT TEL. CO., INC. | BELFRY | Landline | 650 | active |
| 406-665 | QWEST CORPORATION | HARDIN | Landline | 650 | active |
| 406-666 | PROJECT TEL. CO., INC. | FORT SMITH | Landline | 650 | active |
| 406-667 | TRIANGLE TEL. COOP. ASSN., INC. | BROADVIEW | Landline | 650 | active |
| 406-668 | QWEST CORPORATION | FROMBERG | Landline | 650 | active |
| 406-669 | TRIANGLE TEL. COOP. ASSN., INC. | MOLT | Landline | 650 | active |
| 406-670 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BILLINGS | Wireless | 650 | active |
| 406-671 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BILLINGS | Wireless | 650 | active |
| 406-672 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BILLINGS | Wireless | 650 | active |
| 406-673 | TRIANGLE TEL. COOP. ASSN., INC. | HAYS | Landline | 648 | active |
| 406-674 | TRIANGLE TEL. COOP. ASSN., INC. | WHITEWATER | Landline | 648 | active |
| 406-675 | RONAN TEL. CO. | PABLO | Landline | 648 | active |
| 406-676 | RONAN TEL. CO. | RONAN | Landline | 648 | active |
| 406-677 | BLACKFOOT TEL. COOP., INC. | SEELEYLAKE | Landline | 648 | active |
| 406-678 | BLACKFOOT TEL. COOP., INC. | HAUGAN | Landline | 648 | active |
| 406-679 | NUSO, LLC | HARDIN | VoIP | 650 | active |
| 406-680 | SAGEBRUSH CELLULAR, INC. | MALTA | Wireless | 648 | active |
| 406-681 | SOUTHERN MONTANA TEL. CO. | GRANT | Landline | 648 | active |
| 406-682 | 3 RIVERS TEL. COOP., INC. | ENNIS | Landline | 648 | active |
| 406-683 | QWEST CORPORATION | DILLON | Landline | 648 | active |
| 406-684 | 3 RIVERS TEL. COOP., INC. | TWINBRIDGS | Landline | 648 | active |
| 406-685 | 3 RIVERS TEL. COOP., INC. | HARRISON | Landline | 648 | active |
| 406-686 | QWEST CORPORATION | CLYDE PARK | Landline | 650 | active |
| 406-687 | MID-RIVERS TEL. COOP., INC. | W GLENDIVE | Landline | 650 | active |
| 406-688 | SAGEBRUSH CELLULAR, INC. | SCOBEY | Wireless | 650 | active |
| 406-689 | SOUTHERN MONTANA TEL. CO. | WISDOM | Landline | 648 | active |
| 406-690 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BILLINGS | Wireless | 650 | active |
| 406-691 | NEW CINGULAR WIRELESS PCS, LLC | ANACONDA | Wireless | 648 | active |
| 406-692 | ONVOY, LLC - MT | YELLOW BAY | Landline | 648 | active |
| 406-693 | QWEST CORPORATION | WARM SPG | Landline | 648 | active |
| 406-694 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BILLINGS | Wireless | 650 | active |
| 406-695 | NEMONT TEL COOP INC | FRAZER | Landline | 650 | active |
| 406-696 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BILLINGS | Wireless | 650 | active |
| 406-697 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BILLINGS | Wireless | 650 | active |
| 406-698 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BILLINGS | Wireless | 650 | active |
| 406-699 | NEW CINGULAR WIRELESS PCS, LLC | HARDIN | Wireless | 650 | active |
| 406-701 | Landline | active | |||
| 406-702 | CHARTER IP ENABLED SERVICES, LLC | BILLINGS | VoIP | 650 | active |
| 406-703 | TELNYX LLC | COLUMBUS | VoIP | 650 | active |
| 406-704 | Landline | active | |||
| 406-705 | Landline | active | |||
| 406-706 | Landline | active | |||
| 406-707 | TERRA NOVA TELECOM INC. | LEWISTOWN | VoIP | 648 | active |
| 406-708 | WIDE VOICE, LLC - MT | LEWISTOWN | Landline | 648 | active |
| 406-709 | CHARTER IP ENABLED SERVICES, LLC | LAKESIDE | VoIP | 648 | active |
| 406-710 | Landline | active | |||
| 406-712 | Landline | active | |||
| 406-713 | Landline | active | |||
| 406-714 | Landline | active | |||
| 406-715 | Wireless | 650 | active | ||
| 406-716 | Landline | active | |||
| 406-717 | VONAGE AMERICA LLC | BILLINGS | VoIP | 650 | active |
| 406-718 | TWILIO INTERNATIONAL, INC. | DARBY | VoIP | 648 | active |
| 406-719 | TWILIO INTERNATIONAL, INC. | FROMBERG | VoIP | 650 | active |
| 406-720 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | COLSTRIP | Wireless | 650 | active |
| 406-721 | QWEST CORPORATION | MISSOULA | Landline | 648 | active |
| 406-722 | BLACKFOOT TEL. COOP., INC. | ALBERTON | Landline | 648 | active |
| 406-723 | QWEST CORPORATION | BUTTE | Landline | 648 | active |
| 406-724 | NEMONT TEL COOP INC | GLENTANA | Landline | 650 | active |
| 406-725 | NEMONT TEL COOP INC | LARSLAN | Landline | 650 | active |
| 406-726 | BLACKFOOT TEL. COOP., INC. | ARLEE | Landline | 648 | active |
| 406-727 | QWEST CORPORATION | GREATFALLS | Landline | 648 | active |
| 406-728 | QWEST CORPORATION | MISSOULA | Landline | 648 | active |
| 406-729 | CENTURYLINK COMMUNICATIONS, LLC | WILSALL | VoIP | 650 | active |
| 406-730 | CHARTER IP ENABLED SERVICES, LLC | WHITEFISH | VoIP | 648 | active |
| 406-731 | WAVENATION, LLC | GREATFALLS | VoIP | 648 | active |
| 406-732 | QWEST CORPORATION | ST MARY | Landline | 648 | active |
| 406-733 | 3 RIVERS TEL. COOP., INC. | HIGHWOOD | Landline | 648 | active |
| 406-734 | 3 RIVERS TEL. COOP., INC. | CARTER | Landline | 648 | active |
| 406-735 | 3 RIVERS TEL. COOP., INC. | GEYSER | Landline | 648 | active |
| 406-736 | 3 RIVERS TEL. COOP., INC. | STOCKETT | Landline | 648 | active |
| 406-737 | TRIANGLE TEL. COOP. ASSN., INC. | GERALDINE | Landline | 648 | active |
| 406-738 | 3 RIVERS TEL. COOP., INC. | RAYNESFORD | Landline | 648 | active |
| 406-739 | TRIANGLE TEL. COOP. ASSN., INC. | LOMA | Landline | 648 | active |
| 406-740 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | COLSTRIP | Wireless | 650 | active |
| 406-741 | HOT SPRINGS TEL. CO. | HOTSPRINGS | Landline | 648 | active |
| 406-742 | MID-RIVERS TELEPHONE COOPERATIVE, INC. | FAIRVIEW | Landline | 650 | active |
| 406-743 | NEW CINGULAR WIRELESS PCS, LLC | LAUREL | Wireless | 650 | active |
| 406-744 | WESTERN MONTANA COMMUNITYTEL INC. - MT | STIGNATIUS | Landline | 648 | active |
| 406-745 | BLACKFOOT TEL. COOP., INC. | STIGNATIUS | Landline | 648 | active |
| 406-746 | NEMONT TEL COOP INC | NASHUA | Landline | 650 | active |
| 406-747 | QWEST CORPORATION | FAIRVIEW | Landline | 650 | active |
| 406-748 | QWEST CORPORATION | COLSTRIP | Landline | 650 | active |
| 406-749 | NEW CINGULAR WIRELESS PCS, LLC | COLSTRIP | Wireless | 650 | active |
| 406-750 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | GREATFALLS | Wireless | 648 | active |
| 406-751 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | KALISPELL | Landline | 648 | active |
| 406-752 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | KALISPELL | Landline | 648 | active |
| 406-753 | 3 RIVERS TEL. COOP., INC. | BRADY | Landline | 648 | active |
| 406-754 | BLACKFOOT TEL. COOP., INC. | CONDON | Landline | 648 | active |
| 406-755 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | KALISPELL | Landline | 648 | active |
| 406-756 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | KALISPELL | Landline | 648 | active |
| 406-757 | RANGE TEL COOP INC | DECKER | Landline | 654 | active |
| 406-758 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | KALISPELL | Landline | 648 | active |
| 406-759 | TRIANGLE TEL. COOP. ASSN., INC. | CHESTER | Landline | 648 | active |
| 406-760 | VONAGE AMERICA LLC | GREATFALLS | VoIP | 648 | active |
| 406-761 | QWEST CORPORATION | GREATFALLS | Landline | 648 | active |
| 406-762 | NEMONT TEL COOP INC | OPHEIM | Landline | 650 | active |
| 406-763 | QWEST CORPORATION | GALATNGTWY | Landline | 650 | active |
| 406-764 | TRI-COUNTY TEL. ASSN., INC. | NO FRANNIE | Landline | 654 | active |
| 406-765 | NEMONT TEL COOP INC | PLENTYWOOD | Landline | 650 | active |
| 406-766 | NEMONT TEL COOP INC | FROID | Landline | 650 | active |
| 406-767 | RT COMMUNICATIONS | RIDGE | Landline | 654 | active |
| 406-768 | NEMONT TEL COOP INC | POPLAR | Landline | 650 | active |
| 406-769 | NEMONT TEL COOP INC | BAINVILLE | Landline | 650 | active |
| 406-770 | COMCAST IP PHONE, LLC | GREATFALLS | VoIP | 648 | active |
| 406-771 | QWEST CORPORATION | GREATFALLS | Landline | 648 | active |
| 406-772 | MID-RIVERS TEL. COOP., INC. | PLEVNA | Landline | 650 | active |
| 406-773 | MID-RIVERS TEL. COOP., INC. | RICHEY | Landline | 650 | active |
| 406-774 | MID-RIVERS TEL. COOP., INC. | LAMBERT | Landline | 650 | active |
| 406-775 | MID-RIVERS TEL. COOP., INC. | EKALAKA | Landline | 650 | active |
| 406-776 | MID-RIVERS TEL. COOP., INC. | SAVAGE | Landline | 650 | active |
| 406-777 | QWEST CORPORATION | STEVENSVL | Landline | 648 | active |
| 406-778 | MID-RIVERS TEL. COOP., INC. | BAKER | Landline | 650 | active |
| 406-779 | NEMONT TEL COOP INC | FLAXVLRURL | Landline | 650 | active |
| 406-780 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | COLUMBUS | Wireless | 650 | active |
| 406-781 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | GREATFALLS | Wireless | 648 | active |
| 406-782 | QWEST CORPORATION | BUTTE | Landline | 648 | active |
| 406-783 | NEMONT TEL COOP INC | SCOBEYRURL | Landline | 650 | active |
| 406-784 | RANGE TEL COOP INC | ASHLAND | Landline | 650 | active |
| 406-785 | NEMONT TEL COOP INC | NO NASHUA | Landline | 650 | active |
| 406-786 | NEMONT TEL COOP INC | BROCKTON | Landline | 650 | active |
| 406-787 | NEMONT TEL COOP INC | CULBERTSON | Landline | 650 | active |
| 406-788 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | GREATFALLS | Wireless | 648 | active |
| 406-789 | NEMONT TEL COOP INC | MEDICINELK | Landline | 650 | active |
| 406-790 | NEW CINGULAR WIRELESS PCS, LLC | CULBERTSON | Wireless | 650 | active |
| 406-791 | QWEST CORPORATION | GREATFALLS | Landline | 648 | active |
| 406-792 | ONVOY, LLC - MT | BUTTE | Landline | 648 | active |
| 406-793 | BLACKFOOT TEL. COOP., INC. | OVANDO | Landline | 648 | active |
| 406-794 | ONVOY, LLC - MT | BILLINGS | Landline | 650 | active |
| 406-795 | QWEST CORPORATION | WIBAUX | Landline | 650 | active |
| 406-796 | MID-RIVERS TELEPHONE COOPERATIVE, INC. | WIBAUX | Landline | 650 | active |
| 406-797 | QWEST CORPORATION | ANACONDA | Landline | 648 | active |
| 406-798 | MID-RIVERS TEL. COOP., INC. | WESTSIDNEY | Landline | 650 | active |
| 406-799 | NEW CINGULAR WIRELESS PCS, LLC | GREATFALLS | Wireless | 648 | active |
| 406-800 | ONVOY, LLC - MT | BRIDGER | Landline | 650 | active |
| 406-801 | Landline | active | |||
| 406-802 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | HAMILTON | Wireless | 648 | active |
| 406-803 | Landline | active | |||
| 406-804 | ONVOY, LLC - MT | GARDINER | Landline | 650 | active |
| 406-805 | Landline | active | |||
| 406-806 | Landline | active | |||
| 406-807 | ONVOY, LLC - MT | EGLACIERPK | Landline | 648 | active |
| 406-808 | CENTURYLINK COMMUNICATIONS, LLC | HAVRE | VoIP | 648 | active |
| 406-809 | Landline | active | |||
| 406-810 | Landline | active | |||
| 406-812 | ONVOY, LLC - MT | LAUREL | Landline | 650 | active |
| 406-813 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | BELGRADE | Landline | 650 | active |
| 406-814 | Landline | active | |||
| 406-815 | AT&T - LOCAL | RED LODGE | Landline | 650 | active |
| 406-816 | Landline | active | |||
| 406-817 | Landline | active | |||
| 406-818 | NEW CINGULAR WIRELESS PCS, LLC | RED LODGE | Wireless | 650 | active |
| 406-819 | Landline | active | |||
| 406-820 | ONVOY, LLC - MT | OLNEY | Landline | 648 | active |
| 406-821 | QWEST CORPORATION | DARBY | Landline | 648 | active |
| 406-822 | BLACKFOOT TEL. COOP., INC. | SUPERIOR | Landline | 648 | active |
| 406-823 | QWEST CORPORATION | LIVINGSTON | Landline | 650 | active |
| 406-824 | NEW CINGULAR WIRELESS PCS, LLC | STIGNATIUS | Wireless | 648 | active |
| 406-825 | BLACKFOOT TEL. COOP., INC. | CLINTON | Landline | 648 | active |
| 406-826 | BLACKFOOT TEL. COOP., INC. | PLAINS | Landline | 648 | active |
| 406-827 | BLACKFOOT TEL. COOP., INC. | THOMPSNFLS | Landline | 648 | active |
| 406-828 | RANGE TEL COOP INC | ALZADA | Landline | 650 | active |
| 406-829 | QWEST CORPORATION | MISSOULA | Landline | 648 | active |
| 406-830 | CHARTER IP ENABLED SERVICES, LLC | MISSOULA | VoIP | 648 | active |
| 406-831 | TELNYX LLC | BILLINGS | VoIP | 650 | active |
| 406-832 | SOUTHERN MONTANA TEL. CO. | WISE RIVER | Landline | 648 | active |
| 406-833 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | RONAN | Wireless | 648 | active |
| 406-834 | SOUTHERN MONTANA TEL. CO. | JACKSON | Landline | 648 | active |
| 406-835 | 3 RIVERS TEL. COOP., INC. | MELROSE | Landline | 648 | active |
| 406-836 | ONVOY, LLC - MT | GREATFALLS | Landline | 648 | active |
| 406-837 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | BIGFORK | Landline | 648 | active |
| 406-838 | QWEST CORPORATION | COOKE CITY | Landline | 650 | active |
| 406-839 | CHARTER IP ENABLED SERVICES, LLC | BILLINGS | VoIP | 650 | active |
| 406-840 | ONVOY, LLC - MT | SILVERTIP | Landline | 654 | active |
| 406-841 | QWEST CORPORATION | HELENA | Landline | 648 | active |
| 406-842 | 3 RIVERS TEL. COOP., INC. | SHERIDAN | Landline | 648 | active |
| 406-843 | 3 RIVERS TEL. COOP., INC. | VIRGINIACY | Landline | 648 | active |
| 406-844 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | LAKESIDE | Landline | 648 | active |
| 406-845 | CHARTER IP ENABLED SERVICES, LLC | CUT BANK | VoIP | 648 | active |
| 406-846 | QWEST CORPORATION | DEER LODGE | Landline | 648 | active |
| 406-847 | BLACKFOOT TEL. COOP., INC. | NOXON | Landline | 648 | active |
| 406-848 | QWEST CORPORATION | GARDINER | Landline | 650 | active |
| 406-849 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | ELMO | Landline | 648 | active |
| 406-850 | NEW CINGULAR WIRELESS PCS, LLC | BILLINGS | Wireless | 650 | active |
| 406-851 | NEW CINGULAR WIRELESS PCS, LLC | MILES CITY | Wireless | 650 | active |
| 406-852 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | MILES CITY | Wireless | 650 | active |
| 406-853 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | MILES CITY | Wireless | 650 | active |
| 406-854 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | MARION | Landline | 648 | active |
| 406-855 | NEW CINGULAR WIRELESS PCS, LLC | BILLINGS | Wireless | 650 | active |
| 406-856 | MID-RIVERS TEL. COOP., INC. | CUSTER | Landline | 650 | active |
| 406-857 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | SOMERS | Landline | 648 | active |
| 406-858 | BOOST SUBSCRIBERCO L.L.C. | KALISPELL | Wireless | 648 | active |
| 406-859 | BLACKFOOT TEL. COOP., INC. | PHILIPSBG | Landline | 648 | active |
| 406-860 | NEW CINGULAR WIRELESS PCS, LLC | BILLINGS | Wireless | 650 | active |
| 406-861 | NEW CINGULAR WIRELESS PCS, LLC | BILLINGS | Wireless | 650 | active |
| 406-862 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | WHITEFISH | Landline | 648 | active |
| 406-863 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | WHITEFISH | Landline | 648 | active |
| 406-864 | BLACKFOOT TEL. COOP., INC. | S ALBERTON | Landline | 648 | active |
| 406-865 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | DILLON | Wireless | 648 | active |
| 406-866 | QWEST CORPORATION | GREATFALLS | Landline | 648 | active |
| 406-867 | WAVENATION, LLC | BILLINGS | Landline | 650 | active |
| 406-868 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | GREATFALLS | Wireless | 648 | active |
| 406-869 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | BILLINGS | Landline | 650 | active |
| 406-870 | BANDWIDTH.COM CLEC, LLC - MT | GREATFALLS | VoIP | 648 | active |
| 406-871 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | KALISPELL | Wireless | 648 | active |
| 406-872 | WESTERN MONTANA COMMUNITYTEL INC. - MT | POLSON | Landline | 648 | active |
| 406-873 | QWEST CORPORATION | CUT BANK | Landline | 648 | active |
| 406-874 | MID-RIVERS TELEPHONE COOPERATIVE, INC. | MILES CITY | Landline | 650 | active |
| 406-875 | PROJECT TEL. CO., INC. | POMPESPLLR | Landline | 650 | active |
| 406-876 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BILLINGS | Wireless | 650 | active |
| 406-877 | RESERVATION TEL. COOP. | WEST BEACH | Landline | 638 | active |
| 406-878 | NUSO, LLC | GREATFALLS | VoIP | 648 | active |
| 406-879 | NEW CINGULAR WIRELESS PCS, LLC | HAVRE | Wireless | 648 | active |
| 406-880 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | MISSOULA | Wireless | 648 | active |
| 406-881 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | OLNEY | Landline | 648 | active |
| 406-882 | INTERBEL TEL. COOP., INC. | EUREKARURL | Landline | 648 | active |
| 406-883 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | POLSON | Landline | 648 | active |
| 406-884 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | POLSON | Landline | 648 | active |
| 406-885 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | KALISPELL | Wireless | 648 | active |
| 406-886 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | SWAN LAKE | Landline | 648 | active |
| 406-887 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | FINLEY PT | Landline | 648 | active |
| 406-888 | QWEST CORPORATION | W GLACIER | Landline | 648 | active |
| 406-889 | INTERBEL TEL. COOP., INC. | EUREKARURL | Landline | 648 | active |
| 406-890 | CHARTER IP ENABLED SERVICES, LLC | KALISPELL | VoIP | 648 | active |
| 406-891 | NEW CINGULAR WIRELESS PCS, LLC | BAKER | Wireless | 650 | active |
| 406-892 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | COLUMBIFLS | Landline | 648 | active |
| 406-893 | NEMONT TEL COOP INC | PEERLESS | Landline | 650 | active |
| 406-894 | COMMIO, LLC | BILLINGS | VoIP | 650 | active |
| 406-895 | NEMONT TEL COOP INC | OUTLOOK | Landline | 650 | active |
| 406-896 | QWEST CORPORATION | BILLINGS | Landline | 650 | active |
| 406-897 | CHARTER IP ENABLED SERVICES, LLC | COLUMBIFLS | VoIP | 648 | active |
| 406-898 | CHARTER IP ENABLED SERVICES, LLC | BOZEMAN | VoIP | 650 | active |
| 406-899 | NEW CINGULAR WIRELESS PCS, LLC | GREATFALLS | Wireless | 648 | active |
| 406-900 | LEVEL 3 COMMUNICATIONS, LLC - MT | ENNIS | Landline | 648 | active |
| 406-901 | ONVOY SPECTRUM, LLC | BILLINGS | Wireless | 650 | active |
| 406-902 | LEVEL 3 COMMUNICATIONS, LLC - MT | SHERIDAN | Landline | 648 | active |
| 406-903 | Landline | active | |||
| 406-904 | Landline | active | |||
| 406-905 | ONVOY, LLC - MT | JOLIET | Landline | 650 | active |
| 406-906 | Landline | active | |||
| 406-907 | Landline | active | |||
| 406-908 | Landline | active | |||
| 406-909 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | COLUMBIFLS | Wireless | 648 | active |
| 406-910 | Landline | active | |||
| 406-912 | Landline | active | |||
| 406-913 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | ROUNDUP | Wireless | 650 | active |
| 406-914 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | LAMBERT | Wireless | 650 | active |
| 406-915 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | SO WOLF PT | Wireless | 650 | active |
| 406-916 | T-MOBILE USA, INC. | HELENA | Wireless | 648 | active |
| 406-917 | Landline | active | |||
| 406-918 | NEW CINGULAR WIRELESS PCS, LLC | LIBBY | Landline | active | |
| 406-919 | TERRA NOVA TELECOM INC. | BELGRADE | VoIP | 650 | active |
| 406-920 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BOZEMAN | Wireless | 650 | active |
| 406-921 | Landline | active | |||
| 406-922 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | BOZEMAN | Landline | 650 | active |
| 406-923 | COMMIO, LLC | GREATFALLS | VoIP | 648 | active |
| 406-924 | LEVEL 3 COMMUNICATIONS, LLC - MT | BELGRADE | Landline | 650 | active |
| 406-925 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | DILLON | Wireless | 648 | active |
| 406-926 | CHARTER IP ENABLED SERVICES, LLC | MISSOULA | VoIP | 648 | active |
| 406-927 | NEW CINGULAR WIRELESS PCS, LLC | BILLINGS | Wireless | 650 | active |
| 406-928 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | GRASSRANGE | Wireless | 650 | active |
| 406-929 | ONVOY, LLC - MT | HUNGRYHORS | Landline | 648 | active |
| 406-930 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BIG TIMBER | Wireless | 650 | active |
| 406-931 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BIG TIMBER | Wireless | 650 | active |
| 406-932 | TRIANGLE TEL. COOP. ASSN., INC. | BIG TIMBER | Landline | 650 | active |
| 406-933 | QWEST CORPORATION | HELENA | Landline | 648 | active |
| 406-934 | WIDE VOICE, LLC - MT | MILES CITY | Landline | 650 | active |
| 406-935 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BROADUS | Wireless | 650 | active |
| 406-936 | BANDWIDTH.COM CLEC, LLC - MT | CLYDE PARK | VoIP | 650 | active |
| 406-937 | NORTHERN TEL. COOP., INC. | SUNBURST | Landline | 648 | active |
| 406-938 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | ALZADA | Wireless | 650 | active |
| 406-939 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | W GLENDIVE | Wireless | 650 | active |
| 406-940 | NEW CINGULAR WIRELESS PCS, LLC | MOLT | Wireless | 650 | active |
| 406-941 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | W GLENDIVE | Wireless | 650 | active |
| 406-942 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | GLASGOW | Wireless | 650 | active |
| 406-943 | LEVEL 3 COMMUNICATIONS, LLC - MT | SIDNEY | Landline | 650 | active |
| 406-944 | LEVEL 3 COMMUNICATIONS, LLC - MT | MILES CITY | Landline | 650 | active |
| 406-945 | NEW CINGULAR WIRELESS PCS, LLC | HAVRE | Wireless | 648 | active |
| 406-946 | LEVEL 3 COMMUNICATIONS, LLC - MT | LIVINGSTON | Landline | 650 | active |
| 406-947 | MID-RIVERS TEL. COOP., INC. | MUSSELSHLL | Landline | 650 | active |
| 406-948 | LEVEL 3 COMMUNICATIONS, LLC - MT | GLENDIVE | Landline | 650 | active |
| 406-949 | NEW CINGULAR WIRELESS PCS, LLC | TOWNSEND | Wireless | 648 | active |
| 406-951 | NEW CINGULAR WIRELESS PCS, LLC | MILES CITY | Wireless | 650 | active |
| 406-952 | ONVOY SPECTRUM, LLC | GREATFALLS | Wireless | 648 | active |
| 406-953 | SAGEBRUSH CELLULAR, INC. | HARDIN | Wireless | 650 | active |
| 406-954 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | ROY | Wireless | 650 | active |
| 406-955 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | KALISPELL | Wireless | 648 | active |
| 406-956 | NEW CINGULAR WIRELESS PCS, LLC | BAKER | Wireless | 650 | active |
| 406-957 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | TERRY | Wireless | 650 | active |
| 406-960 | LEVEL 3 COMMUNICATIONS, LLC - MT | DILLON | Landline | 648 | active |
| 406-961 | QWEST CORPORATION | HAMILTON | Landline | 648 | active |
| 406-962 | QWEST CORPORATION | JOLIET | Landline | 650 | active |
| 406-963 | NEMONT TEL COOP INC | FROIDRURAL | Landline | 650 | active |
| 406-964 | QWEST CORPORATION | GREATFALLS | Landline | 648 | active |
| 406-965 | AIRUS, INC. - MT | GREATFALLS | Landline | 648 | active |
| 406-966 | LEVEL 3 COMMUNICATIONS, LLC - MT | SHELBY | Landline | 648 | active |
| 406-967 | PROJECT TEL. CO., INC. | WORDEN | Landline | 650 | active |
| 406-968 | HD CARRIER LLC | LEWISTOWN | VoIP | 648 | active |
| 406-969 | SKYE TELECOM LLC DBA SKYETEL | BILLINGS | VoIP | 650 | active |
| 406-970 | CENTURYLINK COMMUNICATIONS, LLC | BILLINGS | VoIP | 650 | active |
| 406-971 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | PLEVNA | Wireless | 650 | active |
| 406-972 | WEST RIVER COOPERATIVE TELEPHONE COMPANY | WCAMPCROOK | Landline | 640 | active |
| 406-973 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | SIDNEY | Wireless | 650 | active |
| 406-974 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | CIRCLE | Wireless | 650 | active |
| 406-975 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | EKALAKA | Wireless | 650 | active |
| 406-977 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | JORDAN | Wireless | 650 | active |
| 406-978 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | BAKER | Wireless | 650 | active |
| 406-979 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | RICHEY | Wireless | 650 | active |
| 406-980 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | TOWNSEND | Wireless | 648 | active |
| 406-981 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | SOMILES CY | Wireless | 650 | active |
| 406-982 | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | YELLOW BAY | Landline | 648 | active |
| 406-983 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | ASHLAND | Wireless | 650 | active |
| 406-984 | RANGE TEL COOP INC | BIRNEY | Landline | 650 | active |
| 406-985 | Landline | active | |||
| 406-986 | Landline | active | |||
| 406-987 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | GLENDIVE | Wireless | 650 | active |
| 406-988 | LEVEL 3 COMMUNICATIONS, LLC - MT | DILLON | Landline | 648 | active |
| 406-989 | NEW CINGULAR WIRELESS PCS, LLC | W GLENDIVE | Wireless | 650 | active |
| 406-990 | NEW CINGULAR WIRELESS PCS, LLC | LAME DEER | Wireless | 650 | active |
| 406-991 | ONVOY, LLC - MT | MARION | Landline | 648 | active |
| 406-992 | ONVOY, LLC - MT | HELENA | Landline | 648 | active |
| 406-993 | 3 RIVERS TEL. COOP., INC. | BIG SKY | Landline | 650 | active |
| 406-994 | QWEST CORPORATION | BOZEMAN | Landline | 650 | active |
| 406-995 | 3 RIVERS TEL. COOP., INC. | BIG SKY | Landline | 650 | active |
| 406-996 | CHARTER IP ENABLED SERVICES, LLC | HELENA | VoIP | 648 | active |
| 406-997 | AT&T - LOCAL | FROMBERG | Landline | 650 | active |
| 406-998 | AIRUS, INC. - MT | BILLINGS | Landline | 650 | active |
| 406-999 | MONTANA OPTICOM, LLC - MT | BIG SKY | Landline | 650 | active |