Area Code 410 — Baltimore, Columbia, Hanover, Maryland – TelecomRouting

Reference Data

Area Code Directory

Area Code 410 — Baltimore, Columbia, Hanover, Maryland

Active

Data last updated: June 25, 2026

State

Maryland

Country

Timezone

America/New_York

Assigned

April 18, 2001

Exchanges (NXX)

783

Carriers

Rate Centers

102

Overlay

Yes — 443, 667

Top Carriers

Carrier	OCN	NXX Count
VERIZON MARYLAND, INC.	9212	507
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	53
NEW CINGULAR WIRELESS PCS, LLC - DC	4036	51
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	7228	45
SPOK, INC.	6630	28
OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	22
TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	15
PAETEC ITEL, LLC	829J	12
LEVEL 3 TELECOM OF MARYLAND, LLC - MD	7591	11
METROPCS, INC.	5562	6

Rate Centers

EASTON SALISBURY ELLICOTTCY ARBUTUS PIKESVILLE CATONSVL BALTIMORE BERLIN GLENBURNIE ANNAPOLIS OCEAN CITY RISING SUN ELKRIDGE CAMBRIDGE SEVERN OXFORD COCKEYSVL SOLOMONS TOWSON ESSEX REISTERSTN PARKVILLE ARGRGBSNIS NORTHBEACH WESTMINSTR SEVERNA PK WATERLO236 WOODLAWN ABERDEEN CECILTON DUNDALK NORTH EAST COLUMBIA QUEENSTOWN ODENTON BEL AIR CHASE SPARKSGLNC SILVER RUN STILL POND BISHOPVL PARKTON HILLSBORO HAMPSTEAD VIENNA PT DEPOSIT SPARROWSPT ELKTON WINGATE BRYNPKLNCM FORK PRINCEFRCK EDGEWOOD SMITH IS WORTHINGTN SUDLERSVL CROFTON CARDIFF DARLINGTON FALLSTON TRAPPE DENTON GREENSBORO GLENWOOD CENTREVL RANDALLSTN SYKESVILLE CHURCHHILL STEVENSVL PERRYVILLE PRINCEANNE MARION SNOW HILL RIDGELY NEWWINDSOR ROCK HALL GALENA PRESTON JARRETTSVL MILLERSVL CHESTERTN CHURCHVL WEST RIVER STMICHAELS FEDERALSBG WARWICK TANEYTOWN UNION BDG DEALISLAND WATERLO238 WILLARDS SHERWD FOR NANTICOKE SHARPTOWN CHESAPKECY TILGHMAN DELMAR MILLINGTON HAVREGRACE HURLOCK POCOMOKE CRISFIELD

Exchange Listings (NXX)

NPA-NXX	Carrier	Rate Center	Type	LATA	Status
410-200	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	EASTON	Landline	242	active
410-202	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	SALISBURY	Wireless	242	active
410-203	VERIZON MARYLAND, INC.	ELLICOTTCY	Landline	238	active
410-204	VERIZON MARYLAND, INC.	ARBUTUS	Landline	238	active
410-205	NEW CINGULAR WIRELESS PCS, LLC - DC	PIKESVILLE	Wireless	238	active
410-206	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-207	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-208	VERIZON MARYLAND, INC.	BERLIN	Landline	242	active
410-209	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-210	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	GLENBURNIE	Wireless	238	active
410-212	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	ANNAPOLIS	Wireless	238	active
410-213	VERIZON MARYLAND, INC.	OCEAN CITY	Landline	242	active
410-214	CORE COMMUNICATIONS, INC.- MD	RISING SUN	Landline	238	active
410-215	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-216	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-217	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-218	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-219	VERIZON MARYLAND, INC.	SALISBURY	Landline	242	active
410-220	METROPCS, INC.	ELKRIDGE	Wireless	238	active
410-221	VERIZON MARYLAND, INC.	CAMBRIDGE	Landline	242	active
410-222	VERIZON MARYLAND, INC.	SEVERN	Landline	238	active
410-223	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-224	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-225	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-226	VERIZON MARYLAND, INC.	OXFORD	Landline	242	active
410-227	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-228	VERIZON MARYLAND, INC.	CAMBRIDGE	Landline	242	active
410-229	VERIZON MARYLAND, INC.	COCKEYSVL	Landline	238	active
410-230	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-231	NEW CINGULAR WIRELESS PCS, LLC - DC	SOLOMONS	Wireless	238	active
410-232	SPOK, INC.	BALTIMORE	Landline	238	active
410-233	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-234	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-235	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-236	NEW CINGULAR WIRELESS PCS, LLC - DC	TOWSON	Wireless	238	active
410-237	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-238	VERIZON MARYLAND, INC.	ESSEX	Landline	238	active
410-239	VERIZON MARYLAND, INC.	REISTERSTN	Landline	238	active
410-240	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-241	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-242	VERIZON MARYLAND, INC.	ARBUTUS	Landline	238	active
410-243	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-244	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-245	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-246	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	BALTIMORE	Landline	238	active
410-247	VERIZON MARYLAND, INC.	ARBUTUS	Landline	238	active
410-248	VERIZON MARYLAND, INC.	PARKVILLE	Landline	238	active
410-249	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-250	VERIZON MARYLAND, INC.	OCEAN CITY	Landline	242	active
410-251	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	SALISBURY	Wireless	242	active
410-252	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-253	NEW CINGULAR WIRELESS PCS, LLC - DC	EASTON	Wireless	242	active
410-254	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-255	VERIZON MARYLAND, INC.	ARGRGBSNIS	Landline	238	active
410-256	VERIZON MARYLAND, INC.	PARKVILLE	Landline	238	active
410-257	VERIZON MARYLAND, INC.	NORTHBEACH	Landline	238	active
410-258	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-259	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	WESTMINSTR	Wireless	238	active
410-260	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-261	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-262	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-263	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-264	VERIZON MARYLAND, INC.	WATERLO236	Landline	236	active
410-265	VERIZON MARYLAND, INC.	WOODLAWN	Landline	238	active
410-266	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-267	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-268	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-269	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-270	REDI-CALL COMMUNICATIONS CO.	SALISBURY	Landline	242	active
410-271	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	ANNAPOLIS	Wireless	238	active
410-272	VERIZON MARYLAND, INC.	ABERDEEN	Landline	238	active
410-273	VERIZON MARYLAND, INC.	ABERDEEN	Landline	238	active
410-274	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-275	VERIZON MARYLAND, INC.	CECILTON	Landline	242	active
410-276	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-277	VERIZON MARYLAND, INC.	WOODLAWN	Landline	238	active
410-278	VERIZON MARYLAND, INC.	ABERDEEN	Landline	238	active
410-279	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	ANNAPOLIS	Wireless	238	active
410-280	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-281	VERIZON MARYLAND, INC.	WOODLAWN	Landline	238	active
410-282	VERIZON MARYLAND, INC.	DUNDALK	Landline	238	active
410-283	SPOK, INC.	TOWSON	Landline	238	active
410-284	VERIZON MARYLAND, INC.	DUNDALK	Landline	238	active
410-285	VERIZON MARYLAND, INC.	DUNDALK	Landline	238	active
410-286	VERIZON MARYLAND, INC.	NORTHBEACH	Landline	238	active
410-287	VERIZON MARYLAND, INC.	NORTH EAST	Landline	238	active
410-288	VERIZON MARYLAND, INC.	DUNDALK	Landline	238	active
410-289	VERIZON MARYLAND, INC.	OCEAN CITY	Landline	242	active
410-290	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-291	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-292	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-293	PAETEC ITEL, LLC	ANNAPOLIS	VoIP	238	active
410-294	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-295	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-296	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-297	VERIZON MARYLAND, INC.	ABERDEEN	Landline	238	active
410-298	VERIZON MARYLAND, INC.	WOODLAWN	Landline	238	active
410-299	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-300	METROPCS, INC.	ELKRIDGE	Wireless	238	active
410-301	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-302	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-303	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-304	IDT AMERICA, CORP. - MD	QUEENSTOWN	Landline	242	active
410-305	VERIZON MARYLAND, INC.	ODENTON	Landline	238	active
410-306	VERIZON MARYLAND, INC.	ABERDEEN	Landline	238	active
410-307	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-308	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-309	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-310	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	EASTON	Wireless	242	active
410-312	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-313	VERIZON MARYLAND, INC.	ELLICOTTCY	Landline	238	active
410-314	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	ARBUTUS	Landline	238	active
410-315	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-316	VERIZON MARYLAND, INC.	COCKEYSVL	Landline	238	active
410-317	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	ARGRGBSNIS	Landline	238	active
410-318	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-319	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-320	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	ANNAPOLIS	Wireless	238	active
410-321	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-322	NEW CINGULAR WIRELESS PCS, LLC - DC	BEL AIR	Wireless	238	active
410-323	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-324	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-325	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-326	VERIZON MARYLAND, INC.	SOLOMONS	Landline	238	active
410-327	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-328	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-329	VERIZON MARYLAND, INC.	COCKEYSVL	Landline	238	active
410-330	NEW CINGULAR WIRELESS PCS, LLC - DC	CAMBRIDGE	Wireless	242	active
410-331	SPOK, INC.	ELKRIDGE	Landline	238	active
410-332	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-333	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-334	VERIZON MARYLAND, INC.	SALISBURY	Landline	242	active
410-335	VERIZON MARYLAND, INC.	CHASE	Landline	238	active
410-336	NEW CINGULAR WIRELESS PCS, LLC - DC	BALTIMORE	Wireless	238	active
410-337	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-338	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-339	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-340	NEW CINGULAR WIRELESS PCS, LLC - DC	BALTIMORE	Wireless	238	active
410-341	VERIZON MARYLAND, INC.	SALISBURY	Landline	242	active
410-342	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-343	VERIZON MARYLAND, INC.	SPARKSGLNC	Landline	238	active
410-344	VERIZON MARYLAND, INC.	CHASE	Landline	238	active
410-345	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-346	VERIZON MARYLAND, INC.	SILVER RUN	Landline	238	active
410-347	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-348	VERIZON MARYLAND, INC.	STILL POND	Landline	242	active
410-349	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-350	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-351	SPOK, INC.	BALTIMORE	Landline	238	active
410-352	VERIZON MARYLAND, INC.	BISHOPVL	Landline	242	active
410-353	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	ANNAPOLIS	Wireless	238	active
410-354	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-355	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-356	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-357	VERIZON MARYLAND, INC.	PARKTON	Landline	238	active
410-358	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-359	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-360	VERIZON MARYLAND, INC.	ARGRGBSNIS	Landline	238	active
410-361	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-362	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-363	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-364	VERIZON MARYLAND, INC.	HILLSBORO	Landline	242	active
410-365	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-366	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-367	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-368	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-369	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	BALTIMORE	Landline	238	active
410-370	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-371	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-372	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-373	SPOK, INC.	TOWSON	Landline	238	active
410-374	VERIZON MARYLAND, INC.	HAMPSTEAD	Landline	238	active
410-375	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-376	VERIZON MARYLAND, INC.	VIENNA	Landline	242	active
410-377	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-378	VERIZON MARYLAND, INC.	PT DEPOSIT	Landline	238	active
410-379	VERIZON MARYLAND, INC.	ELKRIDGE	Landline	238	active
410-380	REDI-CALL COMMUNICATIONS CO.	SALISBURY	Landline	242	active
410-381	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-382	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-383	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-384	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-385	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-386	VERIZON MARYLAND, INC.	WESTMINSTR	Landline	238	active
410-387	PAETEC ITEL, LLC	BALTIMORE	VoIP	238	active
410-388	VERIZON MARYLAND, INC.	SPARROWSPT	Landline	238	active
410-389	SPOK, INC.	BALTIMORE	Landline	238	active
410-390	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	OCEAN CITY	Landline	242	active
410-391	VERIZON MARYLAND, INC.	ESSEX	Landline	238	active
410-392	VERIZON MARYLAND, INC.	ELKTON	Landline	238	active
410-393	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-394	VERIZON MARYLAND, INC.	SOLOMONS	Landline	238	active
410-395	VERIZON MARYLAND, INC.	ARBUTUS	Landline	238	active
410-396	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-397	VERIZON MARYLAND, INC.	WINGATE	Landline	242	active
410-398	VERIZON MARYLAND, INC.	ELKTON	Landline	238	active
410-399	VERIZON MARYLAND, INC.	BEL AIR	Landline	238	active
410-400	PAETEC ITEL, LLC	BALTIMORE	VoIP	238	active
410-401	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	BRYNPKLNCM	Landline	238	active
410-402	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	CATONSVL	Landline	238	active
410-403	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	COCKEYSVL	Landline	238	active
410-404	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-405	VERIZON MARYLAND, INC.	FORK	Landline	238	active
410-406	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	ESSEX	Landline	238	active
410-407	VERIZON MARYLAND, INC.	ELKRIDGE	Landline	238	active
410-408	SPOK, INC.	TOWSON	Landline	238	active
410-409	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-410	ONVOY SPECTRUM, LLC	BALTIMORE	Wireless	238	active
410-412	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	GLENBURNIE	Landline	238	active
410-413	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	PIKESVILLE	Landline	238	active
410-414	VERIZON MARYLAND, INC.	PRINCEFRCK	Landline	238	active
410-415	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-416	AMERICAN MESSAGING SERVICES, LLC	WATERLO236	Landline	236	active
410-417	VERIZON MARYLAND, INC.	EDGEWOOD	Landline	238	active
410-418	VERIZON MARYLAND, INC.	ELLICOTTCY	Landline	238	active
410-419	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-420	VERIZON MARYLAND, INC.	BEL AIR	Landline	238	active
410-421	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-422	NEW CINGULAR WIRELESS PCS, LLC - DC	SALISBURY	Wireless	242	active
410-423	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	COLUMBIA	Landline	238	active
410-424	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-425	VERIZON MARYLAND, INC.	SMITH IS	Landline	242	active
410-426	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-427	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	TOWSON	Landline	238	active
410-428	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-429	VERIZON MARYLAND, INC.	WORTHINGTN	Landline	238	active
410-430	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	SALISBURY	Wireless	242	active
410-431	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-432	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-433	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-434	SPOK, INC.	TOWSON	Landline	238	active
410-435	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-436	VERIZON MARYLAND, INC.	EDGEWOOD	Landline	238	active
410-437	VERIZON MARYLAND, INC.	ARGRGBSNIS	Landline	238	active
410-438	VERIZON MARYLAND, INC.	SUDLERSVL	Landline	242	active
410-439	VERIZON MARYLAND, INC.	ARGRGBSNIS	Landline	238	active
410-440	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-441	NEW CINGULAR WIRELESS PCS, LLC - DC	ELKTON	Wireless	238	active
410-442	VERIZON MARYLAND, INC.	ELLICOTTCY	Landline	238	active
410-443	LEVEL 3 COMMUNICATIONS, LLC - MD	EASTON	Landline	242	active
410-444	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-445	SPOK, INC.	BALTIMORE	Landline	238	active
410-446	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-447	SPOK, INC.	COLUMBIA	Landline	238	active
410-448	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-449	BANDWIDTH.COM CLEC, LLC - MD	SOLOMONS	VoIP	238	active
410-450	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-451	VERIZON MARYLAND, INC.	CROFTON	Landline	238	active
410-452	VERIZON MARYLAND, INC.	CARDIFF	Landline	238	active
410-453	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-454	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	BALTIMORE	Landline	238	active
410-455	VERIZON MARYLAND, INC.	CATONSVL	Landline	238	active
410-456	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-457	VERIZON MARYLAND, INC.	DARLINGTON	Landline	238	active
410-458	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-459	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	FALLSTON	Wireless	238	active
410-460	SPOK, INC.	ELKRIDGE	Landline	238	active
410-461	VERIZON MARYLAND, INC.	ELLICOTTCY	Landline	238	active
410-462	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-463	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	TRAPPE	Wireless	242	active
410-464	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-465	VERIZON MARYLAND, INC.	ELLICOTTCY	Landline	238	active
410-466	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-467	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-468	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-469	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-470	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-471	VERIZON MARYLAND, INC.	ELKRIDGE	Landline	238	active
410-472	VERIZON MARYLAND, INC.	SPARKSGLNC	Landline	238	active
410-473	SPOK, INC.	TOWSON	Landline	238	active
410-474	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	PRINCEFRCK	Wireless	238	active
410-475	SPOK, INC.	TOWSON	Landline	238	active
410-476	VERIZON MARYLAND, INC.	TRAPPE	Landline	242	active
410-477	VERIZON MARYLAND, INC.	SPARROWSPT	Landline	238	active
410-478	NEW CINGULAR WIRELESS PCS, LLC - DC	BALTIMORE	Wireless	238	active
410-479	VERIZON MARYLAND, INC.	DENTON	Landline	242	active
410-480	VERIZON MARYLAND, INC.	ELLICOTTCY	Landline	238	active
410-482	VERIZON MARYLAND, INC.	GREENSBORO	Landline	242	active
410-483	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-484	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-485	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-486	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-487	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	GLENBURNIE	Landline	238	active
410-488	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-489	VERIZON MARYLAND, INC.	GLENWOOD	Landline	238	active
410-490	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	CENTREVL	Wireless	242	active
410-491	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-492	SPOK, INC.	TOWSON	Landline	238	active
410-493	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-494	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-495	VERIZON MARYLAND, INC.	PRINCEFRCK	Landline	238	active
410-496	VERIZON MARYLAND, INC.	RANDALLSTN	Landline	238	active
410-497	COMCAST IP PHONE, LLC	PARKVILLE	VoIP	238	active
410-498	PAETEC ITEL, LLC	COCKEYSVL	VoIP	238	active
410-499	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-500	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-501	PAETEC ITEL, LLC	ARBUTUS	VoIP	238	active
410-502	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-503	VERIZON MARYLAND, INC.	ELKRIDGE	Landline	238	active
410-504	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-505	VERIZON MARYLAND, INC.	ELLICOTTCY	Landline	238	active
410-506	VERIZON MARYLAND, INC.	ELKTON	Landline	238	active
410-507	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	ANNAPOLIS	Wireless	238	active
410-508	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-509	BALTIMORE-WASHINGTON TELEPHONE (BWT)	WATERLO236	VoIP	236	active
410-510	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	FORK	Landline	238	active
410-512	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-513	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	PARKVILLE	Landline	238	active
410-514	VERIZON MARYLAND, INC.	SEVERN	Landline	238	active
410-515	VERIZON MARYLAND, INC.	FORK	Landline	238	active
410-516	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-517	VERIZON MARYLAND, INC.	REISTERSTN	Landline	238	active
410-518	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-519	VERIZON MARYLAND, INC.	SEVERN	Landline	238	active
410-520	VERIZON MARYLAND, INC.	OCEAN CITY	Landline	242	active
410-521	VERIZON MARYLAND, INC.	RANDALLSTN	Landline	238	active
410-522	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-523	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-524	VERIZON MARYLAND, INC.	OCEAN CITY	Landline	242	active
410-525	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-526	VERIZON MARYLAND, INC.	REISTERSTN	Landline	238	active
410-527	VERIZON MARYLAND, INC.	COCKEYSVL	Landline	238	active
410-528	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-529	VERIZON MARYLAND, INC.	PARKVILLE	Landline	238	active
410-530	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-531	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-532	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-533	NEW CINGULAR WIRELESS PCS, LLC - DC	ANNAPOLIS	Wireless	238	active
410-534	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-535	VERIZON MARYLAND, INC.	PRINCEFRCK	Landline	238	active
410-536	VERIZON MARYLAND, INC.	ARBUTUS	Landline	238	active
410-537	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-538	VERIZON MARYLAND, INC.	FORK	Landline	238	active
410-539	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-540	VERIZON MARYLAND, INC.	ELKRIDGE	Landline	238	active
410-541	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-542	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-543	VERIZON MARYLAND, INC.	SALISBURY	Landline	242	active
410-544	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-545	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-546	VERIZON MARYLAND, INC.	SALISBURY	Landline	242	active
410-547	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-548	VERIZON MARYLAND, INC.	SALISBURY	Landline	242	active
410-549	VERIZON MARYLAND, INC.	SYKESVILLE	Landline	238	active
410-550	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-551	VERIZON MARYLAND, INC.	SEVERN	Landline	238	active
410-552	VERIZON MARYLAND, INC.	SYKESVILLE	Landline	238	active
410-553	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-554	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-556	VERIZON MARYLAND, INC.	CHURCHHILL	Landline	242	active
410-557	VERIZON MARYLAND, INC.	FORK	Landline	238	active
410-558	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-559	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	PIKESVILLE	Landline	238	active
410-560	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-561	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-562	NEW CINGULAR WIRELESS PCS, LLC - DC	ANNAPOLIS	Wireless	238	active
410-563	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-564	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	ELKRIDGE	Landline	238	active
410-565	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	ARBUTUS	Landline	238	active
410-566	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-567	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	ELKRIDGE	Landline	238	active
410-568	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	COCKEYSVL	Landline	238	active
410-569	VERIZON MARYLAND, INC.	EDGEWOOD	Landline	238	active
410-570	NEW CINGULAR WIRELESS PCS, LLC - DC	ANNAPOLIS	Wireless	238	active
410-571	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-572	VERIZON MARYLAND, INC.	SALISBURY	Landline	242	active
410-573	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-574	VERIZON MARYLAND, INC.	ESSEX	Landline	238	active
410-575	VERIZON MARYLAND, INC.	FORK	Landline	238	active
410-576	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-577	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-578	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-579	VERIZON MARYLAND, INC.	ELKRIDGE	Landline	238	active
410-580	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-581	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-582	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-583	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-584	VERIZON MARYLAND, INC.	COCKEYSVL	Landline	238	active
410-585	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-586	VERIZON MARYLAND, INC.	PRINCEFRCK	Landline	238	active
410-587	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	ARBUTUS	Landline	238	active
410-588	VERIZON MARYLAND, INC.	BEL AIR	Landline	238	active
410-589	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	BRYNPKLNCM	Landline	238	active
410-590	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-591	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-592	VERIZON MARYLAND, INC.	FORK	Landline	238	active
410-593	VERIZON MARYLAND, INC.	FORK	Landline	238	active
410-594	VERIZON MARYLAND, INC.	WOODLAWN	Landline	238	active
410-595	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	GLENBURNIE	Landline	238	active
410-596	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	WESTMINSTR	Wireless	238	active
410-597	VERIZON MARYLAND, INC.	WOODLAWN	Landline	238	active
410-598	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-599	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-600	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	BERLIN	Landline	242	active
410-601	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-602	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-603	NEW CINGULAR WIRELESS PCS, LLC - DC	SALISBURY	Wireless	242	active
410-604	VERIZON MARYLAND, INC.	STEVENSVL	Landline	242	active
410-605	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-606	VERIZON MARYLAND, INC.	WATERLO236	Landline	236	active
410-607	SPOK, INC.	TOWSON	Landline	238	active
410-608	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-609	VERIZON MARYLAND, INC.	BRYNPKLNCM	Landline	238	active
410-610	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	PRINCEFRCK	Wireless	238	active
410-612	VERIZON MARYLAND, INC.	EDGEWOOD	Landline	238	active
410-613	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-614	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-615	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-616	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	TOWSON	Landline	238	active
410-617	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-618	IDT AMERICA, CORP. - MD	PERRYVILLE	Landline	238	active
410-619	AMERICAN MESSAGING SERVICES, LLC	WATERLO236	Landline	236	active
410-620	VERIZON MARYLAND, INC.	ELKTON	Landline	238	active
410-621	VERIZON MARYLAND, INC.	PRINCEANNE	Landline	242	active
410-622	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	BALTIMORE	Landline	238	active
410-623	VERIZON MARYLAND, INC.	MARION	Landline	242	active
410-624	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-625	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-626	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-627	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-628	VERIZON MARYLAND, INC.	COCKEYSVL	Landline	238	active
410-629	VERIZON MARYLAND, INC.	BERLIN	Landline	242	active
410-630	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	CHASE	Landline	238	active
410-631	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-632	VERIZON MARYLAND, INC.	SNOW HILL	Landline	242	active
410-633	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-634	VERIZON MARYLAND, INC.	RIDGELY	Landline	242	active
410-635	VERIZON MARYLAND, INC.	NEWWINDSOR	Landline	238	active
410-636	VERIZON MARYLAND, INC.	BRYNPKLNCM	Landline	238	active
410-637	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-638	VERIZON MARYLAND, INC.	BEL AIR	Landline	238	active
410-639	VERIZON MARYLAND, INC.	ROCK HALL	Landline	242	active
410-640	SPOK, INC.	BALTIMORE	Landline	238	active
410-641	VERIZON MARYLAND, INC.	BERLIN	Landline	242	active
410-642	VERIZON MARYLAND, INC.	PERRYVILLE	Landline	238	active
410-643	VERIZON MARYLAND, INC.	STEVENSVL	Landline	242	active
410-644	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-645	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	WOODLAWN	Landline	238	active
410-646	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-647	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-648	VERIZON MARYLAND, INC.	GALENA	Landline	242	active
410-649	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	BALTIMORE	Landline	238	active
410-650	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	DUNDALK	Landline	238	active
410-651	VERIZON MARYLAND, INC.	PRINCEANNE	Landline	242	active
410-652	NEW CINGULAR WIRELESS PCS, LLC - DC	BEL AIR	Wireless	238	active
410-653	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-654	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-655	VERIZON MARYLAND, INC.	RANDALLSTN	Landline	238	active
410-656	ARMSTRONG TELECOMMUNICATIONS, INC. - MD	NORTH EAST	Landline	238	active
410-657	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	PARKVILLE	Landline	238	active
410-658	ARMSTRONG TEL. CO. OF MARYLAND	RISING SUN	Landline	238	active
410-659	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-660	METROPCS, INC.	ELKRIDGE	Wireless	238	active
410-661	VERIZON MARYLAND, INC.	PARKVILLE	Landline	238	active
410-662	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-663	VERIZON MARYLAND, INC.	PARKVILLE	Landline	238	active
410-664	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-665	VERIZON MARYLAND, INC.	PARKVILLE	Landline	238	active
410-666	VERIZON MARYLAND, INC.	COCKEYSVL	Landline	238	active
410-667	VERIZON MARYLAND, INC.	COCKEYSVL	Landline	238	active
410-668	VERIZON MARYLAND, INC.	PARKVILLE	Landline	238	active
410-669	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-670	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	EDGEWOOD	Landline	238	active
410-671	VERIZON MARYLAND, INC.	EDGEWOOD	Landline	238	active
410-672	VERIZON MARYLAND, INC.	ODENTON	Landline	238	active
410-673	VERIZON MARYLAND, INC.	PRESTON	Landline	242	active
410-674	VERIZON MARYLAND, INC.	ODENTON	Landline	238	active
410-675	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-676	VERIZON MARYLAND, INC.	EDGEWOOD	Landline	238	active
410-677	VERIZON MARYLAND, INC.	SALISBURY	Landline	242	active
410-678	SPOK, INC.	ELKRIDGE	Landline	238	active
410-679	VERIZON MARYLAND, INC.	FORK	Landline	238	active
410-680	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	ELLICOTTCY	Landline	238	active
410-681	SPOK, INC.	TOWSON	Landline	238	active
410-682	VERIZON MARYLAND, INC.	ESSEX	Landline	238	active
410-683	VERIZON MARYLAND, INC.	COCKEYSVL	Landline	238	active
410-684	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-685	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-686	VERIZON MARYLAND, INC.	ESSEX	Landline	238	active
410-687	VERIZON MARYLAND, INC.	ESSEX	Landline	238	active
410-688	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	FALLSTON	Wireless	238	active
410-689	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	GLENBURNIE	Landline	238	active
410-690	LEVEL 3 COMMUNICATIONS, LLC - MD	EASTON	Landline	242	active
410-691	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-692	VERIZON MARYLAND, INC.	JARRETTSVL	Landline	238	active
410-693	NEW CINGULAR WIRELESS PCS, LLC - DC	ANNAPOLIS	Wireless	238	active
410-694	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-695	VERIZON MARYLAND, INC.	ODENTON	Landline	238	active
410-696	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	ELLICOTTCY	Landline	238	active
410-697	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	MILLERSVL	Landline	238	active
410-698	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	FORK	Landline	238	active
410-699	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	CHESTERTN	Wireless	242	active
410-701	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	RANDALLSTN	Landline	238	active
410-702	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	REISTERSTN	Landline	238	active
410-703	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	ANNAPOLIS	Wireless	238	active
410-704	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	TOWSON	Landline	238	active
410-705	BANDWIDTH.COM CLEC, LLC - MD	WATERLO236	VoIP	236	active
410-706	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-707	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	COLUMBIA	Wireless	238	active
410-708	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	CHESTERTN	Wireless	242	active
410-709	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	SPARROWSPT	Landline	238	active
410-710	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-712	VERIZON MARYLAND, INC.	ELKRIDGE	Landline	238	active
410-713	LEVEL 3 COMMUNICATIONS, LLC - MD	SALISBURY	Landline	242	active
410-714	NEW CINGULAR WIRELESS PCS, LLC - DC	EASTON	Wireless	242	active
410-715	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-716	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-717	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	ELKRIDGE	Landline	238	active
410-718	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-719	VERIZON MARYLAND, INC.	CATONSVL	Landline	238	active
410-720	VERIZON MARYLAND, INC.	ELLICOTTCY	Landline	238	active
410-721	VERIZON MARYLAND, INC.	CROFTON	Landline	238	active
410-722	VERIZON MARYLAND, INC.	WATERLO236	Landline	236	active
410-723	VERIZON MARYLAND, INC.	OCEAN CITY	Landline	242	active
410-724	VERIZON MARYLAND, INC.	WATERLO236	Landline	236	active
410-725	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	EASTON	Wireless	242	active
410-726	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	SALISBURY	Wireless	242	active
410-727	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-728	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-729	VERIZON MARYLAND, INC.	SEVERN	Landline	238	active
410-730	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-731	SPOK, INC.	ANNAPOLIS	Landline	238	active
410-732	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-733	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-734	VERIZON MARYLAND, INC.	CHURCHVL	Landline	238	active
410-735	PAETEC ITEL, LLC	BALTIMORE	VoIP	238	active
410-736	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-737	VERIZON MARYLAND, INC.	ARBUTUS	Landline	238	active
410-738	VERIZON MARYLAND, INC.	WATERLO236	Landline	236	active
410-739	NEW CINGULAR WIRELESS PCS, LLC - DC	CENTREVL	Wireless	242	active
410-740	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-741	VERIZON MARYLAND, INC.	WEST RIVER	Landline	238	active
410-742	VERIZON MARYLAND, INC.	SALISBURY	Landline	242	active
410-743	SPOK, INC.	BALTIMORE	Landline	238	active
410-744	VERIZON MARYLAND, INC.	CATONSVL	Landline	238	active
410-745	VERIZON MARYLAND, INC.	STMICHAELS	Landline	242	active
410-746	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-747	VERIZON MARYLAND, INC.	CATONSVL	Landline	238	active
410-748	SPOK, INC.	ELLICOTTCY	Landline	238	active
410-749	VERIZON MARYLAND, INC.	SALISBURY	Landline	242	active
410-750	VERIZON MARYLAND, INC.	ELLICOTTCY	Landline	238	active
410-751	VERIZON MARYLAND, INC.	WESTMINSTR	Landline	238	active
410-752	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-753	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	PIKESVILLE	Landline	238	active
410-754	VERIZON MARYLAND, INC.	FEDERALSBG	Landline	242	active
410-755	VERIZON MARYLAND, INC.	WARWICK	Landline	242	active
410-756	VERIZON MARYLAND, INC.	TANEYTOWN	Landline	238	active
410-757	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-758	VERIZON MARYLAND, INC.	CENTREVL	Landline	242	active
410-759	NEW CINGULAR WIRELESS PCS, LLC - DC	BALTIMORE	Wireless	238	active
410-760	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-761	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-762	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-763	VERIZON MARYLAND, INC.	EASTON	Landline	242	active
410-764	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-765	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-766	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-767	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-768	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-769	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-770	VERIZON MARYLAND, INC.	EASTON	Landline	242	active
410-771	VERIZON MARYLAND, INC.	COCKEYSVL	Landline	238	active
410-772	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-773	VERIZON MARYLAND, INC.	COCKEYSVL	Landline	238	active
410-774	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	CROFTON	Landline	238	active
410-775	VERIZON MARYLAND, INC.	UNION BDG	Landline	238	active
410-776	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	BEL AIR	Landline	238	active
410-777	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	SEVERNA PK	Landline	238	active
410-778	VERIZON MARYLAND, INC.	CHESTERTN	Landline	242	active
410-779	LEVEL 3 COMMUNICATIONS, LLC - MD	BALTIMORE	Landline	238	active
410-780	VERIZON MARYLAND, INC.	ESSEX	Landline	238	active
410-781	VERIZON MARYLAND, INC.	ELLICOTTCY	Landline	238	active
410-782	VERIZON MARYLAND, INC.	ELKRIDGE	Landline	238	active
410-783	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-784	VERIZON MARYLAND, INC.	DEALISLAND	Landline	242	active
410-785	VERIZON MARYLAND, INC.	COCKEYSVL	Landline	238	active
410-786	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	WOODLAWN	Landline	238	active
410-787	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-788	VERIZON MARYLAND, INC.	CATONSVL	Landline	238	active
410-789	VERIZON MARYLAND, INC.	BRYNPKLNCM	Landline	238	active
410-790	NEW CINGULAR WIRELESS PCS, LLC - DC	TOWSON	Wireless	238	active
410-791	VERIZON MARYLAND, INC.	WATERLO236	Landline	236	active
410-792	VERIZON MARYLAND, INC.	WATERLO236	Landline	236	active
410-793	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-794	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	COLUMBIA	Landline	238	active
410-795	VERIZON MARYLAND, INC.	SYKESVILLE	Landline	238	active
410-796	VERIZON MARYLAND, INC.	ELKRIDGE	Landline	238	active
410-797	VERIZON MARYLAND, INC.	WATERLO236	Landline	236	active
410-798	VERIZON MARYLAND, INC.	WEST RIVER	Landline	238	active
410-799	VERIZON MARYLAND, INC.	WATERLO238	Landline	238	active
410-800	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-801	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	BALTIMORE	Landline	238	active
410-802	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-803	VERIZON MARYLAND, INC.	FORK	Landline	238	active
410-804	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-805	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-806	SPOK, INC.	TOWSON	Landline	238	active
410-807	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	CATONSVL	Landline	238	active
410-808	METROPCS, INC.	FALLSTON	Wireless	238	active
410-809	PAETEC ITEL, LLC	BEL AIR	VoIP	238	active
410-810	VERIZON MARYLAND, INC.	CHESTERTN	Landline	242	active
410-812	NEW CINGULAR WIRELESS PCS, LLC - DC	TOWSON	Wireless	238	active
410-813	VERIZON MARYLAND, INC.	WATERLO236	Landline	236	active
410-814	PAETEC ITEL, LLC	BALTIMORE	VoIP	238	active
410-815	VERIZON MARYLAND, INC.	WATERLO236	Landline	236	active
410-816	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	TOWSON	Wireless	238	active
410-817	VERIZON MARYLAND, INC.	FORK	Landline	238	active
410-818	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	CATONSVL	Landline	238	active
410-819	VERIZON MARYLAND, INC.	EASTON	Landline	242	active
410-820	VERIZON MARYLAND, INC.	EASTON	Landline	242	active
410-821	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-822	VERIZON MARYLAND, INC.	EASTON	Landline	242	active
410-823	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-824	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	WATERLO236	Landline	236	active
410-825	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-826	ONVOY, LLC - MD	BALTIMORE	Landline	238	active
410-827	VERIZON MARYLAND, INC.	QUEENSTOWN	Landline	242	active
410-828	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-829	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	EASTON	Wireless	242	active
410-830	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-831	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	SALISBURY	Wireless	242	active
410-832	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-833	VERIZON MARYLAND, INC.	REISTERSTN	Landline	238	active
410-834	CENTURYLINK COMMUNICATIONS, LLC	WATERLO236	VoIP	236	active
410-835	VERIZON MARYLAND, INC.	WILLARDS	Landline	242	active
410-836	VERIZON MARYLAND, INC.	BEL AIR	Landline	238	active
410-837	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-838	VERIZON MARYLAND, INC.	BEL AIR	Landline	238	active
410-839	SPOK, INC.	TOWSON	Landline	238	active
410-840	VERIZON MARYLAND, INC.	REISTERSTN	Landline	238	active
410-841	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-842	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	TOWSON	Landline	238	active
410-843	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	BALTIMORE	Landline	238	active
410-844	PEERLESS NETWORK OF MARYLAND, LLC	BALTIMORE	Landline	238	active
410-845	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	SALISBURY	Wireless	242	active
410-846	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	SEVERN	Landline	238	active
410-847	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-848	VERIZON MARYLAND, INC.	WESTMINSTR	Landline	238	active
410-849	VERIZON MARYLAND, INC.	SHERWD FOR	Landline	238	active
410-850	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-851	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-852	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-853	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-854	VERIZON MARYLAND, INC.	WATERLO236	Landline	236	active
410-855	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-856	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-857	VERIZON MARYLAND, INC.	WESTMINSTR	Landline	238	active
410-858	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-859	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-860	VERIZON MARYLAND, INC.	SALISBURY	Landline	242	active
410-861	VERIZON MARYLAND, INC.	WESTMINSTR	Landline	238	active
410-862	ONVOY, LLC - MD	WATERLO236	Landline	236	active
410-863	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-864	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	BALTIMORE	Landline	238	active
410-865	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-866	VERIZON MARYLAND, INC.	ESSEX	Landline	238	active
410-867	VERIZON MARYLAND, INC.	WEST RIVER	Landline	238	active
410-868	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-869	VERIZON MARYLAND, INC.	CATONSVL	Landline	238	active
410-870	COMCAST IP PHONE, LLC	PARKVILLE	VoIP	238	active
410-871	VERIZON MARYLAND, INC.	WESTMINSTR	Landline	238	active
410-872	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-873	VERIZON MARYLAND, INC.	NANTICOKE	Landline	242	active
410-874	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	ODENTON	Landline	238	active
410-875	VERIZON MARYLAND, INC.	SYKESVILLE	Landline	238	active
410-876	VERIZON MARYLAND, INC.	REISTERSTN	Landline	238	active
410-877	VERIZON MARYLAND, INC.	FALLSTON	Landline	238	active
410-878	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	BALTIMORE	Landline	238	active
410-879	VERIZON MARYLAND, INC.	FORK	Landline	238	active
410-880	VERIZON MARYLAND, INC.	WATERLO236	Landline	236	active
410-881	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	SHERWD FOR	Landline	238	active
410-882	VERIZON MARYLAND, INC.	PARKVILLE	Landline	238	active
410-883	VERIZON MARYLAND, INC.	SHARPTOWN	Landline	242	active
410-884	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-885	VERIZON MARYLAND, INC.	CHESAPKECY	Landline	242	active
410-886	VERIZON MARYLAND, INC.	TILGHMAN	Landline	242	active
410-887	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-888	VERIZON MARYLAND, INC.	WATERLO236	Landline	236	active
410-889	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-890	SPOK, INC.	TOWSON	Landline	238	active
410-891	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	COCKEYSVL	Landline	238	active
410-892	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-893	VERIZON MARYLAND, INC.	FORK	Landline	238	active
410-894	SPOK, INC.	TOWSON	Landline	238	active
410-895	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-896	VERIZON MARYLAND, INC.	DELMAR	Landline	242	active
410-897	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-898	VERIZON MARYLAND, INC.	WATERLO236	Landline	236	active
410-899	SPOK, INC.	TOWSON	Landline	238	active
410-900	PAETEC ITEL, LLC	BALTIMORE	VoIP	238	active
410-901	VERIZON MARYLAND, INC.	CAMBRIDGE	Landline	242	active
410-902	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-903	METROPCS, INC.	SEVERNA PK	Wireless	238	active
410-904	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	WATERLO238	Landline	238	active
410-905	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-906	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-907	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	WOODLAWN	Landline	238	active
410-908	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-909	SPOK, INC.	ELKRIDGE	Landline	238	active
410-910	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	COLUMBIA	Landline	238	active
410-912	PAETEC ITEL, LLC	SALISBURY	VoIP	242	active
410-913	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-914	PAETEC ITEL, LLC	CHURCHVL	VoIP	238	active
410-915	BALTIMORE-WASHINGTON TELEPHONE (BWT)	BALTIMORE	VoIP	238	active
410-916	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-917	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-918	VERIZON MARYLAND, INC.	ESSEX	Landline	238	active
410-919	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	ANNAPOLIS	Landline	238	active
410-920	NEW CINGULAR WIRELESS PCS, LLC - DC	ELKTON	Wireless	238	active
410-921	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	SEVERN	Landline	238	active
410-922	VERIZON MARYLAND, INC.	RANDALLSTN	Landline	238	active
410-923	VERIZON MARYLAND, INC.	MILLERSVL	Landline	238	active
410-924	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	EASTON	Wireless	242	active
410-925	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-926	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-927	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	ODENTON	Landline	238	active
410-928	VERIZON MARYLAND, INC.	MILLINGTON	Landline	242	active
410-929	BANDWIDTH.COM CLEC, LLC - MD	BALTIMORE	VoIP	238	active
410-930	REDI-CALL COMMUNICATIONS CO.	WATERLO236	Landline	236	active
410-931	VERIZON MARYLAND, INC.	PARKVILLE	Landline	238	active
410-932	SPOK, INC.	ELKRIDGE	Landline	238	active
410-933	VERIZON MARYLAND, INC.	PARKVILLE	Landline	238	active
410-934	NEW CINGULAR WIRELESS PCS, LLC - DC	ANNAPOLIS	Wireless	238	active
410-935	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-936	COMCAST IP PHONE, LLC	SALISBURY	VoIP	242	active
410-937	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	FALLSTON	Wireless	238	active
410-938	VERIZON MARYLAND, INC.	TOWSON	Landline	238	active
410-939	VERIZON MARYLAND, INC.	HAVREGRACE	Landline	238	active
410-940	PAETEC ITEL, LLC	ANNAPOLIS	VoIP	238	active
410-941	VERIZON MARYLAND, INC.	JARRETTSVL	Landline	238	active
410-942	VERIZON MARYLAND, INC.	HAVREGRACE	Landline	238	active
410-943	VERIZON MARYLAND, INC.	HURLOCK	Landline	242	active
410-944	VERIZON MARYLAND, INC.	WOODLAWN	Landline	238	active
410-945	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-946	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-947	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-948	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-949	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	BALTIMORE	Landline	238	active
410-951	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	BALTIMORE	Landline	238	active
410-952	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-953	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-955	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-956	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-957	VERIZON MARYLAND, INC.	POCOMOKE	Landline	242	active
410-960	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	BALTIMORE	Wireless	238	active
410-961	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-962	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-963	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-964	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-965	VERIZON MARYLAND, INC.	WOODLAWN	Landline	238	active
410-966	VERIZON MARYLAND, INC.	WOODLAWN	Landline	238	active
410-967	NEW CINGULAR WIRELESS PCS, LLC - DC	TOWSON	Wireless	238	active
410-968	VERIZON MARYLAND, INC.	CRISFIELD	Landline	242	active
410-969	VERIZON MARYLAND, INC.	SEVERN	Landline	238	active
410-970	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	SYKESVILLE	Landline	238	active
410-971	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-972	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	ANNAPOLIS	Landline	238	active
410-973	MCC TELEPHONY OF THE MID-ATLANTIC, LLC - MD	BERLIN	VoIP	242	active
410-974	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-975	VERIZON MARYLAND, INC.	SEVERNA PK	Landline	238	active
410-977	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	BALTIMORE	Wireless	238	active
410-978	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-979	NEW CINGULAR WIRELESS PCS, LLC - DC	CATONSVL	Wireless	238	active
410-980	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	ANNAPOLIS	Wireless	238	active
410-981	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-982	QUANTUM TELECOMMUNICATIONS, INC. - MD	BALTIMORE	Landline	238	active
410-983	VERIZON MARYLAND, INC.	FORK	Landline	238	active
410-984	METROPCS, INC.	SYKESVILLE	Wireless	238	active
410-985	BALTIMORE-WASHINGTON TELEPHONE (BWT)	WATERLO236	VoIP	236	active
410-986	VERIZON MARYLAND, INC.	BALTIMORE	Landline	238	active
410-987	VERIZON MARYLAND, INC.	SEVERN	Landline	238	active
410-988	VERIZON MARYLAND, INC.	ELLICOTTCY	Landline	238	active
410-989	VERIZON MARYLAND, INC.	FORK	Landline	238	active
410-990	VERIZON MARYLAND, INC.	ANNAPOLIS	Landline	238	active
410-991	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	ANNAPOLIS	Wireless	238	active
410-992	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-993	VERIZON MARYLAND, INC.	GLENBURNIE	Landline	238	active
410-994	VERIZON MARYLAND, INC.	EDGEWOOD	Landline	238	active
410-995	VERIZON MARYLAND, INC.	ELLICOTTCY	Landline	238	active
410-996	VERIZON MARYLAND, INC.	ELKTON	Landline	238	active
410-997	VERIZON MARYLAND, INC.	COLUMBIA	Landline	238	active
410-998	VERIZON MARYLAND, INC.	PIKESVILLE	Landline	238	active
410-999	BALTIMORE-WASHINGTON TELEPHONE (BWT)	GLENBURNIE	VoIP	238	active

Area code 410 shares its geographic region with the following overlay area codes:

443 667

Area Code 410 — Baltimore, Columbia, Hanover, Maryland

Top Carriers

Rate Centers

Exchange Listings (NXX)

Related Area Codes