Reference Data
Area Code Directory
Area Code 557 — Saint Louis, Hazelwood, Missouri

Area Code 557 — Saint Louis, Hazelwood, Missouri

Active

Data last updated: March 10, 2026

State
Missouri
Country
US
Timezone
America/Chicago
Assigned
August 8, 2022
Exchanges (NXX)
786
Carriers
16
Rate Centers
7
Overlay
Yes — 314

Top Carriers

Carrier OCN NXX Count
NEW CINGULAR WIRELESS PCS, LLC - IL 6534 17
TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 16
ONVOY, LLC - MO 093F 12
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 6
ONVOY SPECTRUM, LLC 624H 3
TERRA NOVA TELECOM INC. 145J 2
FIVE9, INC. 598J 2
T-MOBILE USA, INC. 6529 2
E. RITTER COMMUNICATIONS, LLC 128L 1
COMCAST IP PHONE, LLC 318J 1

Rate Centers

LADUE KIRKWOOD ST LOUIS MEHLVILLE OAKVILLE SAPPINGTON CREVECOEUR

Exchange Listings (NXX)

NPA-NXX Carrier Rate Center Type LATA Status
557-200 ONVOY, LLC - MO LADUE Landline 520 active
557-201 TELEPORT COMMUNICATIONS AMERICA, LLC - MO KIRKWOOD VoIP 520 active
557-202 COMCAST IP PHONE, LLC ST LOUIS VoIP 520 active
557-203 T-MOBILE USA, INC. MEHLVILLE Wireless 520 active
557-204 FIVE9, INC. ST LOUIS VoIP 520 active
557-205 TELEPORT COMMUNICATIONS AMERICA, LLC - MO ST LOUIS VoIP 520 active
557-206 TELEPORT COMMUNICATIONS AMERICA, LLC - MO ST LOUIS VoIP 520 active
557-207 FIVE9, INC. OAKVILLE VoIP 520 active
557-208 ONVOY, LLC - MO LADUE Landline 520 active
557-209 ONVOY, LLC - MO KIRKWOOD Landline 520 active
557-210 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO LADUE Wireless 520 active
557-212 T-MOBILE USA, INC. MEHLVILLE Wireless 520 active
557-213 NEW CINGULAR WIRELESS PCS, LLC - IL ST LOUIS Wireless 520 active
557-214 NEW CINGULAR WIRELESS PCS, LLC - IL ST LOUIS Wireless 520 active
557-215 CALLWORKS CORPORATION ST LOUIS VoIP 520 active
557-216 TELEPORT COMMUNICATIONS AMERICA, LLC - MO ST LOUIS VoIP 520 active
557-217 NEW CINGULAR WIRELESS PCS, LLC - IL SAPPINGTON Wireless 520 active
557-218 NEW CINGULAR WIRELESS PCS, LLC - IL LADUE Wireless 520 active
557-219 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO LADUE Wireless 520 active
557-220 NEW CINGULAR WIRELESS PCS, LLC - IL CREVECOEUR Wireless 520 active
557-221 ONVOY, LLC - MO MEHLVILLE Landline 520 active
557-222 LEAP TELECOM, LLC ST LOUIS VoIP 520 active
557-223 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO LADUE Wireless 520 active
557-224 TELEPORT COMMUNICATIONS AMERICA, LLC - MO CREVECOEUR VoIP 520 active
557-225 NEW CINGULAR WIRELESS PCS, LLC - IL LADUE Wireless 520 active
557-226 ONVOY, LLC - MO CREVECOEUR Landline 520 active
557-227 NEW CINGULAR WIRELESS PCS, LLC - IL KIRKWOOD Wireless 520 active
557-228 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO ST LOUIS Wireless 520 active
557-229 NEW CINGULAR WIRELESS PCS, LLC - IL KIRKWOOD Wireless 520 active
557-230 NEW CINGULAR WIRELESS PCS, LLC - IL SAPPINGTON Wireless 520 active
557-231 TELEPORT COMMUNICATIONS AMERICA, LLC - MO ST LOUIS VoIP 520 active
557-232 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO LADUE Wireless 520 active
557-233 BOOST SUBSCRIBERCO L.L.C. ST LOUIS Wireless 520 active
557-234 NEW CINGULAR WIRELESS PCS, LLC - IL ST LOUIS Wireless 520 active
557-235 NEW CINGULAR WIRELESS PCS, LLC - IL KIRKWOOD Wireless 520 active
557-236 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO LADUE Wireless 520 active
557-237 NEW CINGULAR WIRELESS PCS, LLC - IL LADUE Wireless 520 active
557-238 NEW CINGULAR WIRELESS PCS, LLC - IL KIRKWOOD Wireless 520 active
557-239 TELEPORT COMMUNICATIONS AMERICA, LLC - MO ST LOUIS VoIP 520 active
557-240 TELEPORT COMMUNICATIONS AMERICA, LLC - MO LADUE Landline 520 active
557-241 ONVOY, LLC - MO LADUE Landline active
557-242 ONVOY, LLC - MO ST LOUIS Landline active
557-243 NEW CINGULAR WIRELESS PCS, LLC - IL ST LOUIS Landline active
557-244 NEW CINGULAR WIRELESS PCS, LLC - IL KIRKWOOD Landline active
557-245 TELEPORT COMMUNICATIONS AMERICA, LLC - MO ST LOUIS Landline active
557-246 WAVENATION, LLC ST LOUIS Landline active
557-247 NEW CINGULAR WIRELESS PCS, LLC - IL MEHLVILLE Landline active
557-248 E. RITTER COMMUNICATIONS, LLC ST LOUIS Landline active
557-249 ONVOY, LLC - MO LADUE Landline active
557-250 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS ST LOUIS Landline active
557-251 NEW CINGULAR WIRELESS PCS, LLC - IL KIRKWOOD Landline active
557-252 Landline active
557-253 Landline active
557-254 Landline active
557-255 Landline active
557-256 Landline active
557-257 Landline active
557-258 Landline active
557-259 Landline active
557-260 Landline active
557-261 Landline active
557-262 Landline active
557-263 Landline active
557-264 Landline active
557-265 Landline active
557-266 Landline active
557-267 Landline active
557-268 Landline active
557-269 Landline active
557-270 Landline active
557-271 Landline active
557-272 Landline active
557-273 TELEPORT COMMUNICATIONS AMERICA, LLC - MO ST LOUIS VoIP 520 active
557-274 Landline active
557-275 Landline active
557-276 Landline active
557-277 Landline active
557-278 Landline active
557-279 Landline active
557-280 Landline active
557-281 Landline active
557-282 Landline active
557-283 Landline active
557-284 Landline active
557-285 Landline active
557-286 Landline active
557-287 Landline active
557-288 Landline active
557-289 Landline active
557-290 Landline active
557-291 Landline active
557-292 Landline active
557-293 Landline active
557-294 Landline active
557-295 Landline active
557-296 Landline active
557-297 Landline active
557-298 Landline active
557-299 Landline active
557-300 Landline active
557-301 Landline active
557-302 Landline active
557-303 Landline active
557-304 Landline active
557-305 Landline active
557-306 Landline active
557-307 Landline active
557-308 Landline active
557-309 Landline active
557-310 Landline active
557-312 Landline active
557-313 Landline active
557-314 Landline active
557-315 Landline active
557-316 Landline active
557-317 Landline active
557-318 Landline active
557-319 Landline active
557-320 Landline active
557-321 Landline active
557-322 Landline active
557-323 Landline active
557-324 Landline active
557-325 Landline active
557-326 Landline active
557-327 Landline active
557-328 Landline active
557-329 Landline active
557-330 Landline active
557-331 Landline active
557-332 Landline active
557-333 ONVOY, LLC - MO SAPPINGTON Landline 520 active
557-334 Landline active
557-335 Landline active
557-336 Landline active
557-337 Landline active
557-338 Landline active
557-339 Landline active
557-340 Landline active
557-341 Landline active
557-342 Landline active
557-343 Landline active
557-344 Landline active
557-345 Landline active
557-346 Landline active
557-347 Landline active
557-348 Landline active
557-349 Landline active
557-350 Landline active
557-351 Landline active
557-352 Landline active
557-353 Landline active
557-354 Landline active
557-355 Landline active
557-356 Landline active
557-357 Landline active
557-358 Landline active
557-359 Landline active
557-360 Landline active
557-361 Landline active
557-362 TELEPORT COMMUNICATIONS AMERICA, LLC - MO ST LOUIS VoIP 520 active
557-363 Landline active
557-364 Landline active
557-365 Landline active
557-366 Landline active
557-367 Landline active
557-368 Landline active
557-369 Landline active
557-370 Landline active
557-371 Landline active
557-372 Landline active
557-373 Landline active
557-374 Landline active
557-375 Landline active
557-376 Landline active
557-377 Landline active
557-378 Landline active
557-379 Landline active
557-380 Landline active
557-381 Landline active
557-382 Landline active
557-383 Landline active
557-384 Landline active
557-385 Landline active
557-386 Landline active
557-387 Landline active
557-388 Landline active
557-389 Landline active
557-390 Landline active
557-391 Landline active
557-392 Landline active
557-393 Landline active
557-394 Landline active
557-395 Landline active
557-396 Landline active
557-397 Landline active
557-398 Landline active
557-399 Landline active
557-400 Landline active
557-401 Landline active
557-402 Landline active
557-403 Landline active
557-404 Landline active
557-405 Landline active
557-406 Landline active
557-407 Landline active
557-408 Landline active
557-409 Landline active
557-410 Landline active
557-412 Landline active
557-413 Landline active
557-414 Landline active
557-415 Landline active
557-416 Landline active
557-417 Landline active
557-418 Landline active
557-419 Landline active
557-420 Landline active
557-421 Landline active
557-422 Landline active
557-423 Landline active
557-424 Landline active
557-425 Landline active
557-426 Landline active
557-427 Landline active
557-428 Landline active
557-429 Landline active
557-430 Landline active
557-431 Landline active
557-432 Landline active
557-433 Landline active
557-434 Landline active
557-435 Landline active
557-436 Landline active
557-437 Landline active
557-438 Landline active
557-439 Landline active
557-440 Landline active
557-441 Landline active
557-442 Landline active
557-443 Landline active
557-444 ONVOY, LLC - MO CREVECOEUR Landline 520 active
557-445 Landline active
557-446 Landline active
557-447 Landline active
557-448 Landline active
557-449 Landline active
557-450 Landline active
557-451 Landline active
557-452 Landline active
557-453 Landline active
557-454 TELEPORT COMMUNICATIONS AMERICA, LLC - MO ST LOUIS VoIP 520 active
557-455 Landline active
557-456 Landline active
557-457 Landline active
557-458 Landline active
557-459 Landline active
557-460 Landline active
557-461 Landline active
557-462 Landline active
557-463 Landline active
557-464 Landline active
557-465 Landline active
557-466 Landline active
557-467 ONVOY, LLC - MO ST LOUIS Landline 520 active
557-468 Landline active
557-469 Landline active
557-470 Landline active
557-471 Landline active
557-472 Landline active
557-473 Landline active
557-474 Landline active
557-475 Landline active
557-476 Landline active
557-477 Landline active
557-478 Landline active
557-479 Landline active
557-480 Landline active
557-481 Landline active
557-482 Landline active
557-483 Landline active
557-484 Landline active
557-485 Landline active
557-486 Landline active
557-487 Landline active
557-488 Landline active
557-489 Landline active
557-490 Landline active
557-491 Landline active
557-492 Landline active
557-493 Landline active
557-494 Landline active
557-495 Landline active
557-496 Landline active
557-497 Landline active
557-498 Landline active
557-499 Landline active
557-500 ONVOY SPECTRUM, LLC ST LOUIS Wireless 520 active
557-501 Landline active
557-502 Landline active
557-503 Landline active
557-504 Landline active
557-505 Landline active
557-506 Landline active
557-507 ONVOY SPECTRUM, LLC ST LOUIS Wireless 520 active
557-508 Landline active
557-509 Landline active
557-510 Landline active
557-512 Landline active
557-513 Landline active
557-514 Landline active
557-515 Landline active
557-516 Landline active
557-517 Landline active
557-518 Landline active
557-519 Landline active
557-520 Landline active
557-521 Landline active
557-522 Landline active
557-523 Landline active
557-524 Landline active
557-525 Landline active
557-526 Landline active
557-527 Landline active
557-528 Landline active
557-529 Landline active
557-530 Landline active
557-531 Landline active
557-532 Landline active
557-533 Landline active
557-534 Landline active
557-535 Landline active
557-536 Landline active
557-537 Landline active
557-538 Landline active
557-539 Landline active
557-540 Landline active
557-541 Landline active
557-542 Landline active
557-543 Landline active
557-544 Landline active
557-545 Landline active
557-546 Landline active
557-547 Landline active
557-548 Landline active
557-549 Landline active
557-550 Landline active
557-551 Landline active
557-552 Landline active
557-553 Landline active
557-554 Landline active
557-556 Landline active
557-557 ONVOY, LLC - MO ST LOUIS Landline 520 active
557-558 Landline active
557-559 Landline active
557-560 Landline active
557-561 Landline active
557-562 Landline active
557-563 Landline active
557-564 Landline active
557-565 Landline active
557-566 Landline active
557-567 ONVOY SPECTRUM, LLC KIRKWOOD Wireless 520 active
557-568 Landline active
557-569 Landline active
557-570 Landline active
557-571 Landline active
557-572 Landline active
557-573 Landline active
557-574 Landline active
557-575 Landline active
557-576 Landline active
557-577 Landline active
557-578 Landline active
557-579 Landline active
557-580 Landline active
557-581 Landline active
557-582 Landline active
557-583 Landline active
557-584 Landline active
557-585 Landline active
557-586 Landline active
557-587 Landline active
557-588 Landline active
557-589 Landline active
557-590 Landline active
557-591 Landline active
557-592 Landline active
557-593 Landline active
557-594 Landline active
557-595 Landline active
557-596 Landline active
557-597 Landline active
557-598 Landline active
557-599 Landline active
557-600 Landline active
557-601 Landline active
557-602 Landline active
557-603 Landline active
557-604 Landline active
557-605 Landline active
557-606 Landline active
557-607 Landline active
557-608 Landline active
557-609 Landline active
557-610 Landline active
557-612 Landline active
557-613 Landline active
557-614 Landline active
557-615 Landline active
557-616 Landline active
557-617 Landline active
557-618 Landline active
557-619 Landline active
557-620 Landline active
557-621 Landline active
557-622 Landline active
557-623 Landline active
557-624 Landline active
557-625 Landline active
557-626 Landline active
557-627 Landline active
557-628 Landline active
557-629 Landline active
557-630 Landline active
557-631 Landline active
557-632 Landline active
557-633 Landline active
557-634 Landline active
557-635 Landline active
557-636 Landline active
557-637 Landline active
557-638 Landline active
557-639 Landline active
557-640 Landline active
557-641 Landline active
557-642 Landline active
557-643 Landline active
557-644 Landline active
557-645 Landline active
557-646 Landline active
557-647 Landline active
557-648 Landline active
557-649 Landline active
557-650 Landline active
557-651 Landline active
557-652 Landline active
557-653 TELEPORT COMMUNICATIONS AMERICA, LLC - MO ST LOUIS VoIP 520 active
557-654 Landline active
557-655 Landline active
557-656 Landline active
557-657 Landline active
557-658 Landline active
557-659 Landline active
557-660 Landline active
557-661 Landline active
557-662 Landline active
557-663 Landline active
557-664 Landline active
557-665 Landline active
557-666 Landline active
557-667 Landline active
557-668 Landline active
557-669 Landline active
557-670 Landline active
557-671 Landline active
557-672 Landline active
557-673 Landline active
557-674 Landline active
557-675 Landline active
557-676 Landline active
557-677 Landline active
557-678 Landline active
557-679 Landline active
557-680 Landline active
557-681 Landline active
557-682 Landline active
557-683 Landline active
557-684 Landline active
557-685 Landline active
557-686 Landline active
557-687 Landline active
557-688 Landline active
557-689 Landline active
557-690 Landline active
557-691 Landline active
557-692 Landline active
557-693 Landline active
557-694 Landline active
557-695 Landline active
557-696 Landline active
557-697 Landline active
557-698 Landline active
557-699 Landline active
557-701 Landline active
557-702 Landline active
557-703 Landline active
557-704 Landline active
557-705 Landline active
557-706 Landline active
557-707 Landline active
557-708 Landline active
557-709 Landline active
557-710 Landline active
557-712 Landline active
557-713 Landline active
557-714 Landline active
557-715 Landline active
557-716 Landline active
557-717 Landline active
557-718 Landline active
557-719 Landline active
557-720 Landline active
557-721 Landline active
557-722 Landline active
557-723 Landline active
557-724 Landline active
557-725 Landline active
557-726 Landline active
557-727 Landline active
557-728 Landline active
557-729 Landline active
557-730 Landline active
557-731 Landline active
557-732 Landline active
557-733 Landline active
557-734 Landline active
557-735 Landline active
557-736 Landline active
557-737 Landline active
557-738 Landline active
557-739 Landline active
557-740 Landline active
557-741 Landline active
557-742 Landline active
557-743 Landline active
557-744 Landline active
557-745 Landline active
557-746 Landline active
557-747 TELEPORT COMMUNICATIONS AMERICA, LLC - MO ST LOUIS VoIP 520 active
557-748 Landline active
557-749 Landline active
557-750 Landline active
557-751 Landline active
557-752 Landline active
557-753 Landline active
557-754 Landline active
557-755 Landline active
557-756 Landline active
557-757 Landline active
557-758 Landline active
557-759 Landline active
557-760 Landline active
557-761 Landline active
557-762 Landline active
557-763 Landline active
557-764 Landline active
557-765 Landline active
557-766 Landline active
557-767 Landline active
557-768 Landline active
557-769 Landline active
557-770 Landline active
557-771 Landline active
557-772 Landline active
557-773 Landline active
557-774 Landline active
557-775 Landline active
557-776 Landline active
557-777 TERRA NOVA TELECOM INC. CREVECOEUR VoIP 520 active
557-778 Landline active
557-779 Landline active
557-780 Landline active
557-781 Landline active
557-782 Landline active
557-783 Landline active
557-784 Landline active
557-785 Landline active
557-786 Landline active
557-787 Landline active
557-788 Landline active
557-789 Landline active
557-790 Landline active
557-791 Landline active
557-792 Landline active
557-793 Landline active
557-794 Landline active
557-795 Landline active
557-796 Landline active
557-797 Landline active
557-798 Landline active
557-799 Landline active
557-800 Landline active
557-801 Landline active
557-802 Landline active
557-803 Landline active
557-804 Landline active
557-805 Landline active
557-806 Landline active
557-807 Landline active
557-808 Landline active
557-809 Landline active
557-810 Landline active
557-812 Landline active
557-813 Landline active
557-814 Landline active
557-815 Landline active
557-816 Landline active
557-817 Landline active
557-818 Landline active
557-819 Landline active
557-820 Landline active
557-821 Landline active
557-822 Landline active
557-823 Landline active
557-824 Landline active
557-825 Landline active
557-826 Landline active
557-827 Landline active
557-828 Landline active
557-829 Landline active
557-830 Landline active
557-831 Landline active
557-832 Landline active
557-833 Landline active
557-834 Landline active
557-835 Landline active
557-836 Landline active
557-837 Landline active
557-838 Landline active
557-839 Landline active
557-840 Landline active
557-841 Landline active
557-842 Landline active
557-843 Landline active
557-844 Landline active
557-845 Landline active
557-846 Landline active
557-847 Landline active
557-848 Landline active
557-849 Landline active
557-850 Landline active
557-851 Landline active
557-852 Landline active
557-853 Landline active
557-854 Landline active
557-855 Landline active
557-856 Landline active
557-857 Landline active
557-858 Landline active
557-859 Landline active
557-860 Landline active
557-861 Landline active
557-862 Landline active
557-863 Landline active
557-864 Landline active
557-865 Landline active
557-866 Landline active
557-867 Landline active
557-868 Landline active
557-869 Landline active
557-870 Landline active
557-871 Landline active
557-872 Landline active
557-873 Landline active
557-874 Landline active
557-875 Landline active
557-876 Landline active
557-877 Landline active
557-878 Landline active
557-879 Landline active
557-880 Landline active
557-881 Landline active
557-882 Landline active
557-883 Landline active
557-884 Landline active
557-885 Landline active
557-886 Landline active
557-887 Landline active
557-888 TERRA NOVA TELECOM INC. KIRKWOOD VoIP 520 active
557-889 Landline active
557-890 Landline active
557-891 Landline active
557-892 Landline active
557-893 Landline active
557-894 Landline active
557-895 Landline active
557-896 Landline active
557-897 Landline active
557-898 Landline active
557-899 Landline active
557-900 Landline active
557-901 Landline active
557-902 Landline active
557-903 Landline active
557-904 Landline active
557-905 Landline active
557-906 Landline active
557-907 Landline active
557-908 Landline active
557-909 Landline active
557-910 Landline active
557-912 Landline active
557-913 Landline active
557-914 Landline active
557-915 Landline active
557-916 Landline active
557-917 Landline active
557-918 Landline active
557-919 Landline active
557-920 Landline active
557-921 Landline active
557-922 Landline active
557-923 Landline active
557-924 Landline active
557-925 Landline active
557-926 Landline active
557-927 Landline active
557-928 Landline active
557-929 Landline active
557-930 Landline active
557-931 Landline active
557-932 Landline active
557-933 Landline active
557-934 Landline active
557-935 Landline active
557-936 Landline active
557-937 Landline active
557-938 Landline active
557-939 Landline active
557-940 Landline active
557-941 Landline active
557-942 Landline active
557-943 Landline active
557-944 Landline active
557-945 Landline active
557-946 Landline active
557-947 Landline active
557-948 Landline active
557-949 Landline active
557-951 Landline active
557-952 Landline active
557-953 TELEPORT COMMUNICATIONS AMERICA, LLC - MO ST LOUIS VoIP 520 active
557-954 Landline active
557-955 Landline active
557-956 Landline active
557-957 Landline active
557-960 Landline active
557-961 Landline active
557-962 Landline active
557-963 Landline active
557-964 Landline active
557-965 Landline active
557-966 Landline active
557-967 Landline active
557-968 Landline active
557-969 Landline active
557-970 Landline active
557-971 Landline active
557-972 Landline active
557-973 Landline active
557-974 Landline active
557-975 Landline active
557-977 Landline active
557-978 Landline active
557-979 Landline active
557-980 Landline active
557-981 Landline active
557-982 Landline active
557-983 Landline active
557-984 Landline active
557-985 Landline active
557-986 Landline active
557-987 Landline active
557-988 Landline active
557-989 Landline active
557-990 Landline active
557-991 Landline active
557-992 Landline active
557-993 Landline active
557-994 Landline active
557-995 Landline active
557-996 TELEPORT COMMUNICATIONS AMERICA, LLC - MO ST LOUIS VoIP 520 active
557-997 Landline active
557-998 Landline active
557-999 WIRETAP TELECOM, LLC. SAPPINGTON VoIP 520 active

Area code 557 shares its geographic region with the following overlay area codes:

314