Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 251 prefixes
528 of the 786 possible NXX blocks are assigned in area code 251 (67.2% of capacity), spread across 42 rate centers and 48 holders. The largest holders are BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (87 blocks, 16.5%), NEW CINGULAR WIRELESS PCS, LLC - GA (72 blocks, 13.6%), ONVOY, LLC - AL (66 blocks, 12.5%). Grouped by brand, AT&T accounts for 173 blocks; brand-attributable holders cover 79% of the code, and the rest are CLECs, VoIP wholesalers and regional carriers that trade under their own names. The assignment records here run from 2001-01-03 to 2026-09-18, with 42 blocks handed out in 2021 alone. 396 blocks (75%) are in thousands-block pooling, meaning the block is shared between carriers in 1,000-number lots rather than held whole – which is why a single NXX can serve several carriers at once. 2 assigned blocks (539, 541) are not yet in service: assigned to a carrier but not open for calls, so a caller ID from one is spoofed. 154 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
528 assigned blocks of 786
42 rate centers
48 holders of record
75% in thousands-block pooling
Largest holders in 251
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | AT&T | 87 | 16.5% |
| NEW CINGULAR WIRELESS PCS, LLC - GA | AT&T | 72 | 13.6% |
| ONVOY, LLC - AL | Onvoy | 66 | 12.5% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | Verizon | 38 | 7.2% |
| ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | – | 29 | 5.5% |
| BRIGHTSPEED OF SOUTHERN ALABAMA | Brightspeed | 29 | 5.5% |
| PAETEC ITEL, LLC | Windstream | 19 | 3.6% |
| LEVEL 3 COMMUNICATIONS, LLC - AL | Lumen | 17 | 3.2% |
| MCC TELEPHONY OF THE SOUTH, LLC - AL | – | 17 | 3.2% |
| ONVOY SPECTRUM, LLC | Charter | 17 | 3.2% |
| FRONTIER COMMUNICATIONS OF THE SOUTH, LLC - AL | Frontier | 15 | 2.8% |
| METROPCS, INC. | T-Mobile | 11 | 2.1% |
Names are printed as they appear in the assignment records, which is the legal entity rather than the brand. Holding a block is not the same as serving the numbers in it: portability moves numbers between carriers and pooling splits a block between several.
Rate centers with their own page
Rate centers where at least three blocks are assigned, excluding the numbered metro zone codes. The remainder are in the full table below.
MOBILE 233FOLEY 73ATMORE 16JACKSON 15FAIRHOPE 14BAYMINETTE 13BREWTON 12EVERGREEN 10MCINTOSH 10BELLEFONTN 8FLOMATON 8MONROEVL 8MT VERNON 7CITRONELLE 6PETERMAN 5MELVIN 5GROVE HILL 5FINCHBURG 5GRAND BAY 5HUXFORD 5BEATRICE 5REPTON 4GOSPORT 4FRISCOCITY 4COFFEEVL 4IRNGTNSTEL 4BAYOUBATRE 4DAUPHIN IS 4CLEAR SPG 4EXCEL 4PINE APPLE 4MCCULLOUGH 3URIAH 3FOWL RIVER 3
All 528 assigned blocks
One row per NXX. “Pooled” means carriers draw 1,000-number lots from the block rather than holding all 10,000, so a pooled prefix can belong to several carriers at once. “Not in service” means assigned but not yet open for calls – a caller ID from one of those is necessarily spoofed. The holder column gives the brand where the legal entity maps to one; the full legal names are in the holders table above, exactly as NANPA records them.
| Prefix | Holder of record | Rate center | Assigned | Pooled | In service |
|---|---|---|---|---|---|
| 251-200 | T-Mobile | FOLEY | 2007-01-05 | yes | yes |
| 251-201 | TELEPAK NETWORKS, INC. - AL | FOLEY | 2008-10-23 | yes | yes |
| 251-202 | Lumen | BAYMINETTE | 2002-08-27 | yes | yes |
| 251-203 | Onvoy | BELLEFONTN | 2023-11-03 | yes | yes |
| 251-205 | Onvoy | MOBILE | 2023-09-13 | yes | yes |
| 251-206 | Windstream | MOBILE | 2012-02-21 | yes | yes |
| 251-207 | AT&T | BELLEFONTN | 2004-01-19 | yes | yes |
| 251-208 | AT&T | MOBILE | – | yes | yes |
| 251-209 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MOBILE | – | – | yes |
| 251-210 | Windstream | FAIRHOPE | – | yes | yes |
| 251-212 | Windstream | BREWTON | – | – | yes |
| 251-213 | AT&T | FOLEY | 2004-07-14 | yes | yes |
| 251-214 | AT&T | MOBILE | 2005-04-27 | yes | yes |
| 251-215 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | FOLEY | 2004-07-14 | yes | yes |
| 251-216 | Lumen | EVERGREEN | 2004-05-25 | yes | yes |
| 251-217 | Lumen | MOBILE | 2003-10-27 | yes | yes |
| 251-218 | Windstream | MCINTOSH | – | – | yes |
| 251-219 | AT&T | MOBILE | – | yes | yes |
| 251-220 | Onvoy | MOBILE | 2015-11-20 | yes | yes |
| 251-221 | AT&T | MOBILE | 2002-04-25 | – | yes |
| 251-222 | Verizon | MOBILE | 2009-11-12 | yes | yes |
| 251-223 | AT&T | FOLEY | 2002-06-27 | yes | yes |
| 251-224 | MCC TELEPHONY OF THE SOUTH, LLC - AL | FOLEY | 2003-08-21 | yes | yes |
| 251-225 | AT&T | MCINTOSH | 2003-03-14 | yes | yes |
| 251-226 | Windstream | EVERGREEN | – | – | yes |
| 251-227 | AT&T | EVERGREEN | 2002-09-10 | yes | yes |
| 251-228 | AT&T | FOLEY | 2003-04-18 | yes | yes |
| 251-229 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | ATMORE | 2002-12-17 | yes | yes |
| 251-230 | Verizon | EVERGREEN | 2003-04-07 | yes | yes |
| 251-231 | Windstream | JACKSON | – | yes | yes |
| 251-232 | Verizon | MOBILE | – | – | yes |
| 251-233 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | FOLEY | 2002-04-25 | yes | yes |
| 251-234 | Verizon | MOBILE | – | yes | yes |
| 251-235 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MCINTOSH | 2002-12-30 | yes | yes |
| 251-236 | Verizon | BREWTON | 2002-09-17 | yes | yes |
| 251-237 | Windstream | FLOMATON | – | yes | yes |
| 251-238 | SOUTHERN COMMUNICATIONS SERVICES, INC. | BREWTON | 2003-05-01 | yes | yes |
| 251-239 | Windstream | BAYMINETTE | – | yes | yes |
| 251-240 | MCC TELEPHONY OF THE SOUTH, LLC - AL | FOLEY | 2007-02-06 | yes | yes |
| 251-241 | Lumen | BREWTON | 2002-08-19 | yes | yes |
| 251-242 | Verizon | CHATOM | 2003-09-11 | yes | yes |
| 251-243 | Verizon | MOBILE | 2003-07-29 | yes | yes |
| 251-244 | Verizon | PETERMAN | 2004-12-17 | yes | yes |
| 251-245 | Windstream | BELLEFONTN | – | yes | yes |
| 251-246 | AT&T | JACKSON | – | – | yes |
| 251-247 | AT&T | JACKSON | – | yes | yes |
| 251-248 | Frontier | REPTON | – | – | yes |
| 251-249 | Windstream | CITRONELLE | – | yes | yes |
| 251-250 | Onvoy | BAYMINETTE | 2016-02-08 | yes | yes |
| 251-251 | Onvoy | JACKSON | 2022-09-27 | yes | yes |
| 251-252 | Lumen | MOBILE | 2004-01-27 | yes | yes |
| 251-253 | AT&T | ATMORE | 2003-09-24 | yes | yes |
| 251-254 | SOUTHERN COMMUNICATIONS SERVICES, INC. | FLOMATON | 2003-09-02 | yes | yes |
| 251-255 | SOUTHERN COMMUNICATIONS SERVICES, INC. | EVERGREEN | 2003-09-02 | yes | yes |
| 251-256 | MCC TELEPHONY OF THE SOUTH, LLC - AL | FOLEY | 2007-02-06 | yes | yes |
| 251-257 | Onvoy | BELLEFONTN | 2016-02-17 | yes | yes |
| 251-258 | Frontier | GOSPORT | – | – | yes |
| 251-259 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MOBILE | 2004-07-01 | yes | yes |
| 251-260 | Bandwidth | MELVIN | 2012-03-13 | yes | yes |
| 251-261 | AT&T | MCCULLOUGH | 2003-09-26 | yes | yes |
| 251-262 | MCC TELEPHONY OF THE SOUTH, LLC - AL | JACKSON | 2012-07-16 | yes | yes |
| 251-263 | Onvoy | MOBILE | 2009-01-02 | yes | yes |
| 251-264 | AT&T | MOBILE | 2016-09-02 | yes | yes |
| 251-265 | AT&T | MT VERNON | 2011-05-27 | yes | yes |
| 251-266 | AT&T | MOBILE | 2017-02-07 | yes | yes |
| 251-267 | Frontier | FRISCOCITY | – | yes | yes |
| 251-268 | Windstream | MT VERNON | – | yes | yes |
| 251-269 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | FOLEY | 2004-09-22 | yes | yes |
| 251-270 | Verizon | FAIRHOPE | 2014-09-26 | yes | yes |
| 251-271 | MCC TELEPHONY OF THE SOUTH, LLC - AL | FOLEY | 2008-01-31 | yes | yes |
| 251-272 | Lumen | MOBILE | 2006-01-30 | yes | yes |
| 251-273 | Windstream | CITRONELLE | 2008-09-26 | yes | yes |
| 251-274 | AT&T | MCINTOSH | 2011-02-07 | yes | yes |
| 251-275 | BUTLER TEL. CO., INC. | GROVE HILL | – | yes | yes |
| 251-276 | Brightspeed | COFFEEVL | – | yes | yes |
| 251-277 | Verizon | MOBILE | 2017-04-29 | yes | yes |
| 251-278 | AT&T | FAIRHOPE | 2017-05-19 | yes | yes |
| 251-279 | AT&T | FAIRHOPE | 2008-05-01 | yes | yes |
| 251-280 | BHN IP ENABLED SERVICES, LLC | FLOMATON | 2007-10-29 | yes | yes |
| 251-281 | AT&T | MOBILE | 2008-02-07 | yes | yes |
| 251-282 | Frontier | FINCHBURG | – | yes | yes |
| 251-283 | Vonage | MOBILE | 2018-03-13 | yes | yes |
| 251-284 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | FOLEY | 2009-05-27 | yes | yes |
| 251-285 | Onvoy | MOBILE | 2008-09-29 | yes | yes |
| 251-286 | AT&T | BREWTON | 2009-12-21 | yes | yes |
| 251-287 | Verizon | MOBILE | 2009-04-07 | yes | yes |
| 251-288 | Verizon | MOBILE | 2010-01-13 | yes | yes |
| 251-289 | Bandwidth | MOBILE | 2008-05-14 | yes | yes |
| 251-290 | MCC TELEPHONY OF THE SOUTH, LLC - AL | GRAND BAY | 2008-11-18 | yes | yes |
| 251-291 | Bandwidth | MELVIN | 2020-05-12 | yes | yes |
| 251-292 | Bandwidth | MELVIN | 2018-09-27 | yes | yes |
| 251-293 | AT&T | BELLEFONTN | 2019-05-16 | yes | yes |
| 251-294 | Frontier | HUXFORD | – | yes | yes |
| 251-295 | Verizon | MOBILE | – | yes | yes |
| 251-296 | AT&T | FLOMATON | – | yes | yes |
| 251-297 | Onvoy | FLOMATON | – | yes | yes |
| 251-298 | Verizon | MOBILE | 2010-03-08 | yes | yes |
| 251-299 | MCC TELEPHONY OF THE SOUTH, LLC - AL | MT VERNON | 2010-05-20 | yes | yes |
| 251-300 | TELEPAK NETWORKS, INC. - AL | MOBILE | 2006-05-08 | yes | yes |
| 251-301 | TELEPAK NETWORKS, INC. - AL | MOBILE | 2012-11-09 | yes | yes |
| 251-302 | Verizon | MONROEVL | – | yes | yes |
| 251-303 | NUSO, LLC | MOBILE | 2013-02-06 | yes | yes |
| 251-304 | AT&T | MOBILE | – | yes | yes |
| 251-305 | Comcast | MOBILE | 2019-06-04 | yes | yes |
| 251-306 | MCC TELEPHONY OF THE SOUTH, LLC - AL | IRNGTNSTEL | 2010-05-20 | yes | yes |
| 251-307 | PINE BELT BROADCASTING DBA PINE BELT TEL COMP SVCS | MOBILE | 2013-03-07 | yes | yes |
| 251-308 | Lumen | MOBILE | 2014-02-10 | yes | yes |
| 251-309 | AT&T | BAYOUBATRE | 2015-10-29 | yes | yes |
| 251-310 | AT&T | BELLEFONTN | 2019-07-08 | yes | yes |
| 251-312 | MCC TELEPHONY OF THE SOUTH, LLC - AL | REPTON | 2016-12-07 | yes | yes |
| 251-313 | Onvoy | DAUPHIN IS | 2018-08-29 | yes | yes |
| 251-314 | MCC TELEPHONY OF THE SOUTH, LLC - AL | BREWTON | 2010-05-04 | yes | yes |
| 251-315 | Telnyx | EVERGREEN | – | yes | yes |
| 251-316 | AT&T | MOBILE | – | yes | yes |
| 251-317 | Lumen | CITRONELLE | 2008-05-05 | yes | yes |
| 251-318 | Telnyx | MOBILE | 2019-11-19 | yes | yes |
| 251-319 | INTRADO COMMUNICATIONS LLC | MOBILE | 2020-03-31 | yes | yes |
| 251-320 | AT&T | JACKSON | 2016-09-21 | yes | yes |
| 251-321 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | ATMORE | 2007-09-18 | yes | yes |
| 251-322 | MCC TELEPHONY OF THE SOUTH, LLC - AL | ATMORE | 2006-05-11 | yes | yes |
| 251-323 | AT&T | MOBILE | 2020-04-27 | yes | yes |
| 251-324 | MCC TELEPHONY OF THE SOUTH, LLC - AL | FOLEY | 2007-02-02 | yes | yes |
| 251-325 | AT&T | BAYMINETTE | 2020-05-28 | yes | yes |
| 251-326 | Lumen | MOBILE | 2020-06-03 | yes | yes |
| 251-327 | Verizon | MOBILE | – | yes | yes |
| 251-328 | CSC WIRELESS, LLC | MOBILE | 2020-07-22 | yes | yes |
| 251-329 | AT&T | MOBILE | 2020-08-26 | yes | yes |
| 251-330 | AT&T | MOBILE | – | yes | yes |
| 251-331 | SOUTHERN COMMUNICATIONS SERVICES, INC. | MOBILE | – | – | yes |
| 251-332 | AT&T | MOBILE | 2020-11-23 | yes | yes |
| 251-333 | Onvoy | MOBILE | 2014-12-24 | yes | yes |
| 251-334 | Onvoy | URIAH | 2023-03-21 | yes | yes |
| 251-335 | NUSO, LLC | MELVIN | 2020-09-11 | yes | yes |
| 251-336 | FRACTEL, LLC | MONROEVL | 2020-06-11 | yes | yes |
| 251-337 | Onvoy | REPTON | 2021-01-06 | yes | yes |
| 251-338 | Windstream | MOBILE | – | yes | yes |
| 251-339 | Onvoy | GOSPORT | 2021-01-25 | yes | yes |
| 251-340 | AT&T | MOBILE | – | yes | yes |
| 251-341 | AT&T | MOBILE | – | yes | yes |
| 251-342 | AT&T | MOBILE | – | – | yes |
| 251-343 | AT&T | MOBILE | – | – | yes |
| 251-344 | AT&T | MOBILE | – | – | yes |
| 251-345 | AT&T | MOBILE | – | yes | yes |
| 251-346 | FRACTEL, LLC | EVERGREEN | 2020-08-05 | yes | yes |
| 251-347 | Onvoy | URIAH | 2021-01-06 | yes | yes |
| 251-348 | AT&T | MOBILE | 2009-05-08 | yes | yes |
| 251-349 | Verizon | MOBILE | 2021-03-05 | yes | yes |
| 251-350 | Onvoy | BAYMINETTE | 2021-01-22 | yes | yes |
| 251-351 | Onvoy | BEATRICE | 2018-09-19 | yes | yes |
| 251-352 | Spok | MOBILE | – | – | yes |
| 251-353 | Telnyx | PETERMAN | 2021-03-05 | yes | yes |
| 251-354 | Verizon | GROVE HILL | 2021-05-05 | yes | yes |
| 251-355 | Onvoy | MOBILE | 2017-08-23 | yes | yes |
| 251-356 | FRACTEL, LLC | FINCHBURG | 2019-12-02 | yes | yes |
| 251-357 | MCC TELEPHONY OF THE SOUTH, LLC - AL | HUXFORD | – | yes | yes |
| 251-358 | AT&T | MOBILE | 2021-06-23 | yes | yes |
| 251-359 | Verizon | ATMORE | – | yes | yes |
| 251-360 | BUTLER TEL. CO., INC. | GROVE HILL | – | yes | yes |
| 251-361 | Lumen | MOBILE | 2021-08-04 | yes | yes |
| 251-362 | Verizon | MONROEVL | – | yes | yes |
| 251-363 | AT&T | BREWTON | 2002-09-10 | – | yes |
| 251-364 | Charter | JACKSON | 2021-09-01 | yes | yes |
| 251-365 | Charter | CITRONELLE | 2021-09-01 | yes | yes |
| 251-366 | CELLULAR SOUTH, INC. | MOBILE | 2002-06-24 | – | yes |
| 251-367 | CELLULAR SOUTH, INC. | MOBILE | – | – | yes |
| 251-368 | Frontier | ATMORE | – | – | yes |
| 251-369 | AT&T | EVERGREEN | – | yes | yes |
| 251-370 | AT&T | MOBILE | – | yes | yes |
| 251-371 | Spok | MOBILE | – | – | yes |
| 251-372 | Charter | BELLEFONTN | 2021-09-01 | yes | yes |
| 251-373 | IP HORIZON LLC | MOBILE | 2021-09-14 | yes | yes |
| 251-374 | Charter | MOBILE | 2021-11-16 | yes | yes |
| 251-375 | Lumen | MOBILE | – | yes | yes |
| 251-376 | AT&T | MOBILE | 2021-11-18 | yes | yes |
| 251-377 | AT&T | MOBILE | – | – | yes |
| 251-378 | Windstream | MOBILE | – | yes | yes |
| 251-379 | T-Mobile | MOBILE | – | yes | yes |
| 251-380 | AT&T | MOBILE | – | yes | yes |
| 251-381 | NUSO, LLC | MOBILE | 2021-12-03 | yes | yes |
| 251-382 | T-Mobile | MOBILE | 2002-03-11 | yes | yes |
| 251-383 | Onvoy | FAIRHOPE | 2022-03-09 | yes | yes |
| 251-384 | T-Mobile | MOBILE | 2022-03-09 | yes | yes |
| 251-385 | Onvoy | MOBILE | 2017-02-01 | yes | yes |
| 251-386 | Windstream | MOBILE | 2022-03-28 | yes | yes |
| 251-387 | Verizon | JACKSON | 2003-02-24 | yes | yes |
| 251-388 | Onvoy | ATMORE | 2022-03-09 | yes | yes |
| 251-389 | Onvoy | CLEAR SPG | 2022-04-11 | yes | yes |
| 251-390 | Onvoy | BAYOUBATRE | 2021-01-25 | yes | yes |
| 251-391 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MOBILE | – | – | yes |
| 251-392 | T-Mobile | ATMORE | 2022-04-14 | yes | yes |
| 251-393 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | JACKSON | 2022-04-18 | yes | yes |
| 251-394 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MOBILE | 2022-05-25 | yes | yes |
| 251-395 | Verizon | MOBILE | 2022-06-22 | yes | yes |
| 251-396 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MOBILE | 2022-06-27 | yes | yes |
| 251-397 | Onvoy | DAUPHIN IS | 2021-01-13 | yes | yes |
| 251-398 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MOBILE | 2022-06-27 | yes | yes |
| 251-399 | Onvoy | EVERGREEN | 2022-08-05 | yes | yes |
| 251-400 | PINE BELT BROADCASTING DBA PINE BELT TEL COMP SVCS | GROVE HILL | 2016-12-12 | – | yes |
| 251-401 | Verizon | MOBILE | – | – | yes |
| 251-402 | Verizon | MOBILE | – | – | yes |
| 251-403 | AT&T | FOLEY | 2022-08-05 | yes | yes |
| 251-404 | AT&T | MOBILE | 2001-06-27 | yes | yes |
| 251-405 | AT&T | MOBILE | – | yes | yes |
| 251-406 | AT&T | MOBILE | 2002-04-04 | yes | yes |
| 251-407 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | FOLEY | 2022-08-10 | yes | yes |
| 251-408 | AT&T | MOBILE | – | yes | yes |
| 251-409 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | ATMORE | 2022-08-25 | yes | yes |
| 251-410 | TELEPAK NETWORKS, INC. - AL | MOBILE | 2002-07-31 | – | yes |
| 251-412 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MCINTOSH | 2022-09-20 | yes | yes |
| 251-413 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | JACKSON | 2022-09-20 | yes | yes |
| 251-414 | AT&T | MOBILE | – | yes | yes |
| 251-415 | AT&T | MOBILE | – | yes | yes |
| 251-416 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | JACKSON | 2022-09-20 | yes | yes |
| 251-417 | Spok | MOBILE | – | – | yes |
| 251-418 | Lumen | MCINTOSH | 2002-04-29 | yes | yes |
| 251-419 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | ATMORE | 2023-01-04 | yes | yes |
| 251-420 | Onvoy | BEATRICE | 2021-01-25 | yes | yes |
| 251-421 | Verizon | MOBILE | – | – | yes |
| 251-422 | Verizon | MOBILE | – | – | yes |
| 251-423 | Verizon | MOBILE | – | – | yes |
| 251-424 | SOUTHERN COMMUNICATIONS SERVICES, INC. | FOLEY | – | yes | yes |
| 251-425 | TELEPAK NETWORKS, INC. - AL | MOBILE | – | – | yes |
| 251-426 | AIRUS, INC. - AL | MOBILE | 2023-01-19 | yes | yes |
| 251-427 | NUSO, LLC | FAIRHOPE | 2023-02-14 | yes | yes |
| 251-428 | Verizon | HUXFORD | 2004-12-16 | yes | yes |
| 251-429 | Dish | GRAND BAY | 2023-03-24 | yes | yes |
| 251-430 | Onvoy | COFFEEVL | 2021-01-25 | yes | yes |
| 251-431 | AT&T | MOBILE | – | yes | yes |
| 251-432 | AT&T | MOBILE | – | – | yes |
| 251-433 | AT&T | MOBILE | – | – | yes |
| 251-434 | AT&T | MOBILE | – | yes | yes |
| 251-435 | AT&T | MOBILE | – | – | yes |
| 251-436 | AT&T | MOBILE | – | yes | yes |
| 251-437 | AT&T | FOLEY | 2023-06-06 | yes | yes |
| 251-438 | AT&T | MOBILE | – | – | yes |
| 251-439 | AT&T | MOBILE | – | yes | yes |
| 251-440 | Onvoy | FRISCOCITY | 2021-01-25 | yes | yes |
| 251-441 | AT&T | MOBILE | – | yes | yes |
| 251-442 | AT&T | MOBILE | – | yes | yes |
| 251-443 | AT&T | MOBILE | – | – | yes |
| 251-444 | Onvoy | MOBILE | 2015-02-18 | yes | yes |
| 251-445 | TELEPAK NETWORKS, INC. - AL | MOBILE | 2002-06-12 | – | yes |
| 251-446 | Frontier | ATMORE | – | – | yes |
| 251-447 | AT&T | MOBILE | – | yes | yes |
| 251-448 | Charter | MCCULLOUGH | 2021-02-03 | yes | yes |
| 251-449 | Charter | FINCHBURG | 2021-02-03 | yes | yes |
| 251-450 | AT&T | MOBILE | – | yes | yes |
| 251-451 | Onvoy | GOSPORT | 2018-09-19 | yes | yes |
| 251-452 | AT&T | MOBILE | – | – | yes |
| 251-453 | Onvoy | CITRONELLE | 2023-06-29 | yes | yes |
| 251-454 | AT&T | MOBILE | – | – | yes |
| 251-455 | AT&T | MOBILE | – | – | yes |
| 251-456 | AT&T | MOBILE | – | – | yes |
| 251-457 | AT&T | MOBILE | – | – | yes |
| 251-458 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MOBILE | – | – | yes |
| 251-459 | AT&T | MOBILE | – | yes | yes |
| 251-460 | AT&T | MOBILE | – | yes | yes |
| 251-461 | AT&T | MOBILE | – | yes | yes |
| 251-462 | Comcast | FOWL RIVER | 2023-08-23 | yes | yes |
| 251-463 | AT&T | MOBILE | – | – | yes |
| 251-464 | COMMIO, LLC | BEATRICE | 2023-08-22 | yes | yes |
| 251-465 | FRACTEL, LLC | MOBILE | 2020-07-13 | yes | yes |
| 251-466 | COMMIO, LLC | HUXFORD | 2023-08-22 | yes | yes |
| 251-467 | Onvoy | EXCEL | 2023-08-25 | yes | yes |
| 251-468 | Onvoy | MOBILE | 2023-10-16 | yes | yes |
| 251-469 | Onvoy | MOBILE | 2024-01-08 | yes | yes |
| 251-470 | AT&T | MOBILE | – | – | yes |
| 251-471 | AT&T | MOBILE | – | – | yes |
| 251-472 | AT&T | MOBILE | – | yes | yes |
| 251-473 | AT&T | MOBILE | – | yes | yes |
| 251-474 | COMMIO, LLC | MCINTOSH | 2024-02-02 | yes | yes |
| 251-475 | AT&T | FOLEY | 2024-07-24 | yes | yes |
| 251-476 | AT&T | MOBILE | – | – | yes |
| 251-477 | AT&T | MOBILE | 2024-02-12 | yes | yes |
| 251-478 | AT&T | MOBILE | – | – | yes |
| 251-479 | AT&T | MOBILE | – | – | yes |
| 251-480 | Onvoy | MONROEVL | 2021-01-25 | yes | yes |
| 251-481 | COMMIO, LLC | MOBILE | 2024-02-12 | yes | yes |
| 251-482 | Onvoy | BAYMINETTE | 2024-02-29 | yes | yes |
| 251-483 | AT&T | FOLEY | 2024-03-05 | yes | yes |
| 251-484 | Verizon | FOLEY | 2024-03-07 | yes | yes |
| 251-485 | AT&T | MOBILE | 2024-05-09 | yes | yes |
| 251-486 | Bandwidth | MOBILE | 2024-05-13 | yes | yes |
| 251-487 | Verizon | MOBILE | – | yes | yes |
| 251-488 | MCC TELEPHONY OF THE SOUTH, LLC - AL | CASTLEBRY | 2024-08-08 | yes | yes |
| 251-489 | AT&T | MOBILE | 2024-09-26 | yes | yes |
| 251-490 | AT&T | MOBILE | – | – | yes |
| 251-491 | TELEPAK NETWORKS, INC. - AL | BAYMINETTE | 2007-04-24 | – | yes |
| 251-492 | AT&T | GILBERTOWN | 2024-10-07 | yes | yes |
| 251-493 | AT&T | FOLEY | 2024-10-24 | yes | yes |
| 251-494 | Lumen | BAYMINETTE | – | yes | yes |
| 251-495 | Verizon | FOLEY | 2024-11-26 | yes | yes |
| 251-496 | AT&T | FOLEY | 2025-01-16 | yes | yes |
| 251-497 | AT&T | MOBILE | 2025-02-14 | yes | yes |
| 251-498 | AT&T | FOLEY | 2025-04-02 | yes | yes |
| 251-499 | AT&T | MOBILE | 2025-02-14 | yes | yes |
| 251-500 | MCC TELEPHONY OF THE SOUTH, LLC - AL | FOLEY | 2010-11-29 | yes | yes |
| 251-501 | Twilio | MOBILE | 2020-09-30 | yes | yes |
| 251-502 | AT&T | FOLEY | 2025-03-06 | yes | yes |
| 251-503 | AT&T | MOBILE | 2025-04-08 | yes | yes |
| 251-504 | Verizon | FOLEY | – | yes | yes |
| 251-505 | Charter | FRISCOCITY | 2021-10-14 | yes | yes |
| 251-506 | NUSO, LLC | FAIRHOPE | 2025-04-22 | yes | yes |
| 251-507 | AT&T | MOBILE | 2025-04-23 | yes | yes |
| 251-508 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MOBILE | – | yes | yes |
| 251-509 | AT&T | MOBILE | – | yes | yes |
| 251-510 | AT&T | MOBILE | – | – | yes |
| 251-512 | Onvoy | COFFEEVL | 2019-10-14 | yes | yes |
| 251-513 | Verizon | MOBILE | – | yes | yes |
| 251-514 | AT&T | FOLEY | 2025-04-24 | yes | yes |
| 251-515 | Onvoy | BAYMINETTE | 2021-05-25 | yes | yes |
| 251-516 | AT&T | MOBILE | 2025-05-28 | yes | yes |
| 251-517 | Lumen | FAIRHOPE | 2002-04-29 | yes | yes |
| 251-518 | T-Mobile | MOBILE | – | yes | yes |
| 251-519 | Onvoy | DAUPHIN IS | 2021-11-04 | yes | yes |
| 251-520 | COMMIO, LLC | MOBILE | 2022-01-19 | yes | yes |
| 251-521 | Onvoy | GRAND BAY | 2021-09-03 | yes | yes |
| 251-522 | Onvoy | COFFEEVL | 2021-11-04 | yes | yes |
| 251-523 | Onvoy | MT VERNON | 2021-09-03 | yes | yes |
| 251-524 | AT&T | MOBILE | 2025-05-28 | yes | yes |
| 251-525 | Verizon | MOBILE | – | yes | yes |
| 251-526 | AT&T | MOBILE | 2025-06-12 | yes | yes |
| 251-527 | AT&T | MOBILE | 2025-06-12 | yes | yes |
| 251-528 | AT&T | MOBILE | 2025-06-12 | yes | yes |
| 251-529 | FRACTEL, LLC | MOBILE | 2019-12-02 | yes | yes |
| 251-530 | Onvoy | PINE APPLE | 2021-01-25 | yes | yes |
| 251-531 | HD CARRIER LLC | MT VERNON | 2025-08-21 | yes | yes |
| 251-532 | AT&T | FOLEY | 2025-10-06 | yes | yes |
| 251-533 | Verizon | MOBILE | – | – | yes |
| 251-534 | WAVENATION, LLC | MOBILE | 2025-10-17 | yes | yes |
| 251-535 | AT&T | FOLEY | 2025-11-17 | yes | yes |
| 251-536 | AT&T | FOLEY | 2025-11-17 | yes | yes |
| 251-537 | AT&T | FOLEY | 2025-11-17 | yes | yes |
| 251-538 | Verizon | BREWTON | 2005-02-22 | yes | yes |
| 251-539 | AT&T | FOLEY | 2026-08-12 | yes | no |
| 251-540 | Brightspeed | FOLEY | – | – | yes |
| 251-541 | WIDE VOICE, LLC - AL | MOBILE | 2026-09-18 | yes | no |
| 251-542 | MILLRY TEL. CO. | SILAS | – | – | yes |
| 251-543 | Brightspeed | FOLEY | – | yes | yes |
| 251-544 | Windstream | MOBILE | – | – | yes |
| 251-545 | Lumen | MOBILE | 2002-05-13 | yes | yes |
| 251-550 | CELLULAR SOUTH, INC. | FOLEY | 2001-01-03 | – | yes |
| 251-551 | Onvoy | PINE APPLE | 2018-09-19 | yes | yes |
| 251-552 | Onvoy | BAYOUBATRE | 2022-03-30 | yes | yes |
| 251-553 | Onvoy | IRNGTNSTEL | 2022-03-30 | yes | yes |
| 251-554 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MOBILE | – | – | yes |
| 251-556 | Onvoy | FINCHBURG | 2022-03-30 | yes | yes |
| 251-557 | Onvoy | PETERMAN | 2022-03-30 | yes | yes |
| 251-564 | Frontier | PETERMAN | – | yes | yes |
| 251-566 | Charter | GOSPORT | 2021-11-04 | yes | yes |
| 251-567 | Onvoy | MCINTOSH | 2022-09-01 | yes | yes |
| 251-568 | Spok | MOBILE | – | – | yes |
| 251-571 | Onvoy | BAYMINETTE | 2022-08-31 | yes | yes |
| 251-572 | Onvoy | FRISCOCITY | 2018-11-16 | yes | yes |
| 251-574 | AT&T | MOBILE | – | – | yes |
| 251-575 | Frontier | MONROEVL | – | – | yes |
| 251-577 | Frontier | MCCULLOUGH | – | yes | yes |
| 251-578 | AT&T | EVERGREEN | – | yes | yes |
| 251-580 | AT&T | BAYMINETTE | – | yes | yes |
| 251-581 | SOUTHERN COMMUNICATIONS SERVICES, INC. | MOBILE | – | yes | yes |
| 251-582 | Spok | MOBILE | – | – | yes |
| 251-583 | T-Mobile | MOBILE | – | yes | yes |
| 251-586 | Windstream | MOBILE | – | yes | yes |
| 251-587 | EXIANT COMMUNICATIONS LLC | MOBILE | 2026-01-09 | yes | yes |
| 251-588 | AT&T | MOBILE | 2025-03-06 | yes | yes |
| 251-589 | AT&T | JACKSON | – | yes | yes |
| 251-591 | AT&T | MOBILE | – | – | yes |
| 251-593 | AT&T | MONROEVL | – | – | yes |
| 251-597 | Verizon | FOLEY | – | yes | yes |
| 251-599 | AT&T | MOBILE | 2001-01-03 | – | yes |
| 251-600 | MCC TELEPHONY OF THE SOUTH, LLC - AL | FOLEY | 2010-12-16 | yes | yes |
| 251-602 | AT&T | MOBILE | – | – | yes |
| 251-604 | AT&T | MOBILE | – | – | yes |
| 251-605 | AT&T | MOBILE | – | – | yes |
| 251-606 | Charter | PINE APPLE | 2021-10-14 | yes | yes |
| 251-607 | AT&T | MOBILE | – | yes | yes |
| 251-609 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | FOLEY | – | yes | yes |
| 251-610 | AT&T | MOBILE | – | – | yes |
| 251-615 | Onvoy | FAIRHOPE | 2021-05-25 | yes | yes |
| 251-616 | Lumen | CLEAR SPG | 2005-03-02 | yes | yes |
| 251-617 | Spok | MOBILE | – | – | yes |
| 251-620 | TELEPAK NETWORKS, INC. - AL | MOBILE | 2018-01-16 | yes | yes |
| 251-621 | AT&T | MOBILE | – | – | yes |
| 251-622 | Windstream | MOBILE | 2006-06-21 | yes | yes |
| 251-623 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MOBILE | 2002-01-03 | yes | yes |
| 251-625 | AT&T | MOBILE | – | yes | yes |
| 251-626 | AT&T | MOBILE | – | – | yes |
| 251-631 | AT&T | MOBILE | – | yes | yes |
| 251-633 | AT&T | MOBILE | – | – | yes |
| 251-634 | AT&T | MOBILE | – | – | yes |
| 251-635 | AT&T | MOBILE | – | yes | yes |
| 251-638 | TELEPAK NETWORKS, INC. - AL | MOBILE | – | – | yes |
| 251-639 | AT&T | MOBILE | – | – | yes |
| 251-643 | AT&T | MOBILE | – | yes | yes |
| 251-644 | T-Mobile | MOBILE | 2006-02-23 | yes | yes |
| 251-645 | AT&T | MOBILE | – | – | yes |
| 251-647 | Bandwidth | FLOMATON | – | yes | yes |
| 251-648 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MOBILE | – | yes | yes |
| 251-649 | AT&T | MOBILE | – | – | yes |
| 251-650 | Lumen | MOBILE | – | yes | yes |
| 251-651 | Onvoy | BAYMINETTE | 2018-10-12 | yes | yes |
| 251-652 | Lumen | MOBILE | – | yes | yes |
| 251-653 | AT&T | MOBILE | – | – | yes |
| 251-654 | AT&T | MOBILE | – | yes | yes |
| 251-655 | T-Mobile | ATMORE | 2006-03-30 | yes | yes |
| 251-656 | AT&T | MOBILE | 2001-01-03 | – | yes |
| 251-660 | AT&T | MOBILE | – | yes | yes |
| 251-661 | AT&T | MOBILE | – | – | yes |
| 251-662 | AT&T | MOBILE | – | yes | yes |
| 251-664 | Onvoy | MCINTOSH | – | yes | yes |
| 251-665 | AT&T | MOBILE | – | – | yes |
| 251-666 | AT&T | MOBILE | – | – | yes |
| 251-675 | AT&T | MOBILE | – | – | yes |
| 251-677 | MCC TELEPHONY OF THE SOUTH, LLC - AL | FOLEY | 2007-02-02 | yes | yes |
| 251-678 | Onvoy | ATMORE | 2022-09-01 | yes | yes |
| 251-679 | AT&T | MOBILE | – | – | yes |
| 251-680 | AT&T | MOBILE | – | – | yes |
| 251-689 | AT&T | MOBILE | – | – | yes |
| 251-690 | AT&T | MOBILE | – | yes | yes |
| 251-694 | AT&T | MOBILE | – | – | yes |
| 251-697 | Verizon | FLOMATON | 2005-03-22 | yes | yes |
| 251-699 | FRACTEL, LLC | IRNGTNSTEL | 2020-09-23 | yes | yes |
| 251-706 | Windstream | MOBILE | 2001-02-26 | yes | yes |
| 251-709 | AT&T | MOBILE | – | – | yes |
| 251-710 | Onvoy | ATMORE | 2023-04-18 | yes | yes |
| 251-714 | AT&T | FINCHBURG | 2005-02-18 | yes | yes |
| 251-716 | T-Mobile | FAIRHOPE | 2001-01-25 | yes | yes |
| 251-721 | Verizon | MOBILE | – | yes | yes |
| 251-724 | FRACTEL, LLC | MOBILE | 2020-09-23 | yes | yes |
| 251-725 | Comcast | MOBILE | 2007-06-26 | yes | yes |
| 251-727 | Verizon | BREWTON | 2006-05-30 | yes | yes |
| 251-732 | Lumen | FLOMATON | 2005-03-22 | yes | yes |
| 251-743 | Frontier | MONROEVL | – | – | yes |
| 251-744 | Lumen | JACKSON | – | yes | yes |
| 251-746 | Frontier | PINE APPLE | – | – | yes |
| 251-747 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | FOLEY | 2001-04-30 | yes | yes |
| 251-751 | AT&T | MOBILE | – | – | yes |
| 251-752 | AT&T | FOLEY | – | – | yes |
| 251-753 | Verizon | MOBILE | – | – | yes |
| 251-754 | MILLRY TEL. CO. | FRANKVILLE | – | – | yes |
| 251-758 | FRACTEL, LLC | MT VERNON | 2020-07-13 | yes | yes |
| 251-765 | Frontier | EXCEL | – | yes | yes |
| 251-766 | FRACTEL, LLC | JACKSON | 2020-07-13 | yes | yes |
| 251-767 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MOBILE | – | – | yes |
| 251-769 | AT&T | JACKSON | – | – | yes |
| 251-770 | AT&T | MOBILE | – | – | yes |
| 251-771 | AT&T | MELVIN | – | yes | yes |
| 251-776 | AT&T | MOBILE | – | yes | yes |
| 251-777 | MILLRY TEL. CO. | DEER PARK | – | – | yes |
| 251-780 | Charter | GROVE HILL | 2025-06-27 | yes | yes |
| 251-786 | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | MOBILE | 2001-08-24 | yes | yes |
| 251-789 | Frontier | BEATRICE | – | – | yes |
| 251-799 | HD CARRIER LLC | MOBILE | 2025-04-23 | yes | yes |
| 251-800 | Onvoy | MOBILE | 2015-08-17 | yes | yes |
| 251-802 | AT&T | MOBILE | 2001-06-27 | – | yes |
| 251-809 | AT&T | BREWTON | – | yes | yes |
| 251-810 | Onvoy | GRAND BAY | 2020-06-11 | yes | yes |
| 251-820 | Charter | ATMORE | 2021-07-23 | yes | yes |
| 251-824 | Brightspeed | BAYOUBATRE | – | yes | yes |
| 251-827 | MILLRY TEL. CO. | FRUITDALE | – | – | yes |
| 251-829 | AT&T | MT VERNON | – | yes | yes |
| 251-830 | Charter | BEATRICE | 2021-07-26 | yes | yes |
| 251-840 | Charter | EXCEL | 2021-07-26 | yes | yes |
| 251-842 | FRACTEL, LLC | PETERMAN | 2020-07-13 | yes | yes |
| 251-843 | MILLRY TEL. CO. | GILBERTOWN | – | – | yes |
| 251-846 | MILLRY TEL. CO. | MILLRY | – | – | yes |
| 251-847 | MILLRY TEL. CO. | CHATOM | – | – | yes |
| 251-850 | Onvoy | FAIRHOPE | 2019-10-14 | yes | yes |
| 251-851 | Onvoy | CLEAR SPG | 2025-04-28 | yes | yes |
| 251-860 | Charter | HUXFORD | 2021-07-27 | yes | yes |
| 251-861 | Brightspeed | DAUPHIN IS | – | yes | yes |
| 251-862 | Frontier | URIAH | – | yes | yes |
| 251-865 | Brightspeed | GRAND BAY | – | yes | yes |
| 251-866 | AT&T | CITRONELLE | – | yes | yes |
| 251-867 | AT&T | BREWTON | – | – | yes |
| 251-868 | Onvoy | BREWTON | – | yes | yes |
| 251-870 | Charter | MONROEVL | 2021-07-27 | yes | yes |
| 251-873 | Brightspeed | FOWL RIVER | – | yes | yes |
| 251-877 | FRACTEL, LLC | FOWL RIVER | 2020-07-13 | yes | yes |
| 251-880 | Onvoy | ATMORE | 2021-05-19 | yes | yes |
| 251-888 | Onvoy | MOBILE | 2014-10-03 | yes | yes |
| 251-890 | Charter | REPTON | 2021-07-27 | yes | yes |
| 251-895 | AT&T | MOBILE | 2002-01-10 | yes | yes |
| 251-900 | Onvoy | EXCEL | 2019-01-07 | yes | yes |
| 251-901 | Charter | MOBILE | 2021-04-14 | yes | yes |
| 251-910 | Onvoy | MOBILE | 2020-12-21 | yes | yes |
| 251-923 | TELEPAK NETWORKS, INC. - AL | FOLEY | 2003-09-15 | yes | yes |
| 251-928 | AT&T | FAIRHOPE | – | – | yes |
| 251-929 | AT&T | FAIRHOPE | – | yes | yes |
| 251-930 | T-Mobile | MOBILE | 2016-05-09 | yes | yes |
| 251-931 | AT&T | CLEAR SPG | – | yes | yes |
| 251-937 | AT&T | BAYMINETTE | – | – | yes |
| 251-942 | Brightspeed | FOLEY | – | – | yes |
| 251-943 | Brightspeed | FOLEY | – | – | yes |
| 251-944 | AT&T | MCINTOSH | – | yes | yes |
| 251-945 | Brightspeed | FOLEY | – | yes | yes |
| 251-946 | Brightspeed | FOLEY | – | – | yes |
| 251-947 | Brightspeed | FOLEY | – | – | yes |
| 251-948 | Brightspeed | FOLEY | – | – | yes |
| 251-949 | Brightspeed | FOLEY | – | yes | yes |
| 251-952 | Brightspeed | FOLEY | – | – | yes |
| 251-955 | Brightspeed | FOLEY | – | – | yes |
| 251-957 | Brightspeed | IRNGTNSTEL | – | yes | yes |
| 251-960 | Brightspeed | FOLEY | – | – | yes |
| 251-961 | Brightspeed | FOLEY | – | – | yes |
| 251-962 | Brightspeed | FOLEY | – | – | yes |
| 251-964 | Brightspeed | FOLEY | – | – | yes |
| 251-965 | Brightspeed | FOLEY | – | – | yes |
| 251-966 | CASTLEBERRY TEL. CO., INC. | CASTLEBRY | – | – | yes |
| 251-967 | Brightspeed | FOLEY | – | – | yes |
| 251-968 | Brightspeed | FOLEY | – | – | yes |
| 251-970 | Brightspeed | FOLEY | – | – | yes |
| 251-971 | Brightspeed | FOLEY | – | – | yes |
| 251-972 | Brightspeed | FOLEY | – | yes | yes |
| 251-973 | AT&T | BELLEFONTN | – | yes | yes |
| 251-974 | Brightspeed | FOLEY | – | – | yes |
| 251-975 | Brightspeed | FOLEY | – | – | yes |
| 251-978 | AT&T | FOLEY | – | – | yes |
| 251-979 | Verizon | FOLEY | – | – | yes |
| 251-980 | Brightspeed | FOLEY | – | – | yes |
| 251-981 | Brightspeed | FOLEY | – | – | yes |
| 251-986 | Brightspeed | FOLEY | – | yes | yes |
| 251-987 | Brightspeed | FOLEY | – | yes | yes |
| 251-988 | Brightspeed | FOLEY | – | yes | yes |
| 251-989 | Brightspeed | FOLEY | – | yes | yes |
| 251-990 | AT&T | FAIRHOPE | – | – | yes |
| 251-998 | TERRA NOVA TELECOM INC. | MOBILE | 2025-06-24 | yes | yes |
| 251-999 | Onvoy | MOBILE | 2015-02-23 | yes | yes |
Frequently asked
How many prefixes does area code 251 have?
528 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 5,280 thousand-number ranges across 42 rate centers.
What do the first three digits after 251 tell me?
They identify the block, which tells you the rate center it was allocated to and the carrier that received it. They do not tell you who serves the number today: portability moves numbers between carriers, and pooling splits a block between several of them.
Is a 251 prefix tied to a specific town?
To a rate center, which is billing geography rather than a town. NANPA abbreviates rate center names to ten characters and in large metros uses zone codes, so the name is a NANPA label, not a place name.
What does “pooled” mean in the 251 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 396 of 251's blocks are pooled, which is how regulators slowed down area code exhaustion – and why one prefix can belong to several carriers.
Source and limits
NANPA CO Code Assignment Records, all states, utilized codes, file updated 11/01/2026 – the rows where the record's Use field is “AS” (assigned). Unavailable codes are excluded. The records say who received a block and when, not who serves a particular number today.
More about this code: overview · carriers · spam complaints · local time