Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 424 prefixes
460 of the 786 possible NXX blocks are assigned in area code 424 (58.5% of capacity), spread across 16 rate centers and 27 holders. The largest holders are T-MOBILE USA, INC. (74 blocks, 16.1%), ONVOY, LLC - CA (69 blocks, 15.0%), BANDWIDTH.COM CLEC, LLC - CA (45 blocks, 9.8%). Grouped by brand, T-Mobile accounts for 97 blocks; brand-attributable holders cover 91% 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 2006-03-16 to 2026-09-03, with 37 blocks handed out in 2015 alone. 458 blocks (100%) 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. 8 assigned blocks (573, 574, 576, 578, 579, 580…) are not yet in service: assigned to a carrier but not open for calls, so a caller ID from one is spoofed. 363 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
460 assigned blocks of 786
16 rate centers
27 holders of record
100% in thousands-block pooling
Largest holders in 424
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| T-MOBILE USA, INC. | T-Mobile | 74 | 16.1% |
| ONVOY, LLC - CA | Onvoy | 69 | 15% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 45 | 9.8% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 42 | 9.1% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 36 | 7.8% |
| FRACTEL, LLC | – | 33 | 7.2% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 30 | 6.5% |
| METROPCS NETWORKS, LLC | T-Mobile | 23 | 5% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 17 | 3.7% |
| ONVOY SPECTRUM, LLC | Charter | 12 | 2.6% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 11 | 2.4% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | Verizon | 9 | 2% |
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.
All 460 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 |
|---|---|---|---|---|---|
| 424-200 | Verizon | HAWTHORNE | 2007-02-21 | yes | yes |
| 424-201 | Lumen | TORRANCE | 2006-11-15 | yes | yes |
| 424-202 | Verizon | BEVERLYHLS | 2006-10-25 | yes | yes |
| 424-203 | Verizon | LOMITA | 2006-11-30 | yes | yes |
| 424-204 | Verizon | BEVERLYHLS | 2006-11-30 | yes | yes |
| 424-205 | Verizon | CMTN GRDN | 2006-11-30 | yes | yes |
| 424-206 | Lumen | REDONDO | 2006-12-02 | yes | yes |
| 424-207 | T-Mobile | INGLEWOOD | 2006-12-11 | yes | yes |
| 424-208 | T-Mobile | W ANGELES | 2006-12-04 | yes | yes |
| 424-209 | Bandwidth | CULVERCITY | 2007-01-08 | yes | yes |
| 424-210 | T-Mobile | SAN PEDRO | 2006-12-18 | yes | yes |
| 424-212 | T-Mobile | REDONDO | 2006-12-15 | yes | yes |
| 424-213 | T-Mobile | CMTN CMTN | 2006-12-21 | yes | yes |
| 424-214 | T-Mobile | SNMN SNMN | 2007-01-24 | yes | yes |
| 424-215 | T-Mobile | SAN PEDRO | 2007-01-25 | yes | yes |
| 424-216 | T-Mobile | SNMN MRVS | 2007-02-15 | yes | yes |
| 424-217 | T-Mobile | EL SEGUNDO | 2007-02-24 | yes | yes |
| 424-218 | TPx | EL SEGUNDO | 2007-03-08 | yes | yes |
| 424-219 | T-Mobile | CMTN GRDN | 2007-03-13 | yes | yes |
| 424-220 | Peerless | EL SEGUNDO | – | yes | yes |
| 424-221 | T-Mobile | CMTN GRDN | 2007-03-19 | yes | yes |
| 424-222 | T-Mobile | LOMITA | 2007-03-20 | yes | yes |
| 424-223 | T-Mobile | INGLEWOOD | 2007-03-20 | yes | yes |
| 424-224 | T-Mobile | SAN PEDRO | 2007-03-21 | yes | yes |
| 424-225 | AT&T | EL SEGUNDO | 2007-03-28 | yes | yes |
| 424-226 | Verizon | AVALON | 2007-04-22 | yes | yes |
| 424-227 | Verizon | INGLEWOOD | 2006-06-16 | yes | yes |
| 424-228 | T-Mobile | SNMN MRVS | 2007-05-07 | yes | yes |
| 424-229 | T-Mobile | SNMN SNMN | 2007-05-09 | yes | yes |
| 424-230 | T-Mobile | BEVERLYHLS | 2007-08-23 | yes | yes |
| 424-231 | Lumen | SNMN SNMN | 2010-06-04 | yes | yes |
| 424-232 | T-Mobile | CMTN GRDN | 2007-08-24 | yes | yes |
| 424-233 | T-Mobile | CMTN GRDN | 2007-08-24 | yes | yes |
| 424-234 | Verizon | MALIBU | 2007-09-15 | yes | yes |
| 424-235 | T-Mobile | MALIBU | 2007-09-18 | yes | yes |
| 424-236 | AT&T | HAWTHORNE | 2007-09-24 | yes | yes |
| 424-237 | T-Mobile | REDONDO | 2009-01-19 | yes | yes |
| 424-238 | Frontier | SNMN SNMN | 2007-11-07 | yes | yes |
| 424-239 | Onvoy | BEVERLYHLS | – | yes | yes |
| 424-240 | T-Mobile | HAWTHORNE | 2008-02-22 | yes | yes |
| 424-241 | Windstream | REDONDO | 2008-03-13 | yes | yes |
| 424-242 | Lumen | CMTN CMTN | 2008-04-02 | yes | yes |
| 424-243 | Lumen | INGLEWOOD | 2008-04-25 | yes | yes |
| 424-244 | TPx | CMTN GRDN | 2008-09-10 | yes | yes |
| 424-245 | Verizon | BEVERLYHLS | 2008-09-26 | yes | yes |
| 424-246 | T-Mobile | CMTN GRDN | – | yes | yes |
| 424-247 | Charter | REDONDO | – | yes | yes |
| 424-248 | Verizon | W ANGELES | 2008-11-06 | yes | yes |
| 424-249 | T-Mobile | BEVERLYHLS | 2009-02-23 | yes | yes |
| 424-250 | Onvoy | LOMITA | – | yes | yes |
| 424-251 | Verizon | LOMITA | 2009-05-07 | yes | yes |
| 424-252 | Windstream | SNMN SNMN | – | yes | yes |
| 424-253 | Verizon | BEVERLYHLS | 2009-10-26 | yes | yes |
| 424-254 | Verizon | REDONDO | 2010-03-12 | yes | yes |
| 424-255 | Verizon | HAWTHORNE | 2010-04-09 | yes | yes |
| 424-256 | Bandwidth | W ANGELES | 2010-06-14 | yes | yes |
| 424-257 | Bandwidth | REDONDO | 2010-10-11 | yes | yes |
| 424-258 | Windstream | CULVERCITY | 2008-05-28 | yes | yes |
| 424-259 | Windstream | SNMN SNMN | 2009-05-20 | yes | yes |
| 424-260 | Bandwidth | CMTN GRDN | 2010-07-20 | yes | yes |
| 424-261 | Bandwidth | INGLEWOOD | 2010-07-20 | yes | yes |
| 424-262 | Bandwidth | REDONDO | 2010-07-20 | yes | yes |
| 424-263 | AT&T | LOMITA | – | yes | yes |
| 424-264 | AT&T | SAN PEDRO | 2006-03-23 | yes | yes |
| 424-265 | Bandwidth | REDONDO | 2010-07-20 | yes | yes |
| 424-266 | Bandwidth | CMTN GRDN | 2010-07-20 | yes | yes |
| 424-267 | Verizon | SAN PEDRO | 2010-11-19 | yes | yes |
| 424-268 | Lumen | SNMN SNMN | 2010-11-22 | yes | yes |
| 424-269 | Lumen | HAWTHORNE | 2010-11-23 | yes | yes |
| 424-270 | Lumen | W ANGELES | 2006-12-13 | yes | yes |
| 424-271 | Lumen | TORRANCE | 2010-12-16 | yes | yes |
| 424-272 | AT&T | SNMN SNMN | 2011-02-25 | yes | yes |
| 424-273 | Verizon | W ANGELES | 2011-04-20 | yes | yes |
| 424-274 | Bandwidth | BEVERLYHLS | 2011-04-15 | yes | yes |
| 424-275 | Lumen | REDONDO | 2011-05-09 | yes | yes |
| 424-276 | Bandwidth | W ANGELES | 2011-06-29 | yes | yes |
| 424-277 | Lumen | EL SEGUNDO | 2011-07-15 | yes | yes |
| 424-278 | AT&T | BEVERLYHLS | 2011-07-18 | yes | yes |
| 424-279 | Onvoy | BEVERLYHLS | – | yes | yes |
| 424-280 | Verizon | SNMN SNMN | 2011-09-13 | yes | yes |
| 424-281 | Bandwidth | BEVERLYHLS | 2011-07-20 | yes | yes |
| 424-282 | Onvoy | REDONDO | – | yes | yes |
| 424-283 | Peerless | BEVERLYHLS | 2012-06-07 | yes | yes |
| 424-284 | Onvoy | BEVERLYHLS | 2012-10-19 | yes | yes |
| 424-285 | Lumen | BEVERLYHLS | 2012-11-02 | yes | yes |
| 424-286 | Lumen | CMTN GRDN | 2011-08-30 | yes | yes |
| 424-287 | T-Mobile | SAN PEDRO | 2012-12-14 | yes | yes |
| 424-288 | AT&T | BEVERLYHLS | 2006-10-27 | yes | yes |
| 424-289 | TPx | SNMN MRVS | 2012-12-17 | yes | yes |
| 424-290 | Bandwidth | EL SEGUNDO | 2013-01-04 | yes | yes |
| 424-291 | Lumen | SNMN SNMN | 2013-02-04 | yes | yes |
| 424-292 | Lumen | CMTN GRDN | 2013-02-04 | yes | yes |
| 424-293 | Lumen | W ANGELES | 2013-02-11 | yes | yes |
| 424-294 | Lumen | HAWTHORNE | 2006-10-18 | yes | yes |
| 424-295 | T-Mobile | CMTN GRDN | 2013-02-15 | yes | yes |
| 424-296 | Lumen | CMTN CMTN | 2013-04-01 | yes | yes |
| 424-297 | Lumen | HAWTHORNE | 2013-02-04 | yes | yes |
| 424-298 | AT&T | CULVERCITY | – | yes | yes |
| 424-299 | T-Mobile | SNMN SNMN | 2013-06-26 | yes | yes |
| 424-300 | Onvoy | CMTN GRDN | – | yes | yes |
| 424-301 | Verizon | EL SEGUNDO | 2015-02-12 | yes | yes |
| 424-302 | Charter | BEVERLYHLS | 2013-06-13 | yes | yes |
| 424-303 | T-Mobile | BEVERLYHLS | 2015-09-22 | yes | yes |
| 424-304 | Onvoy | REDONDO | 2015-12-24 | yes | yes |
| 424-305 | Verizon | LOMITA | 2016-01-15 | yes | yes |
| 424-306 | Onvoy | TORRANCE | 2016-02-24 | yes | yes |
| 424-307 | Bandwidth | HAWTHORNE | – | yes | yes |
| 424-308 | T-Mobile | SAN PEDRO | 2016-04-29 | yes | yes |
| 424-309 | Onvoy | INGLEWOOD | 2016-05-11 | yes | yes |
| 424-310 | T-Mobile | HAWTHORNE | 2017-08-07 | yes | yes |
| 424-312 | AT&T | INGLEWOOD | 2015-08-14 | yes | yes |
| 424-313 | Verizon | BEVERLYHLS | 2015-11-13 | yes | yes |
| 424-314 | AT&T | BEVERLYHLS | 2012-02-14 | yes | yes |
| 424-315 | AT&T | BEVERLYHLS | 2012-02-14 | yes | yes |
| 424-316 | AT&T | SNMN SNMN | 2015-08-31 | yes | yes |
| 424-317 | Onvoy | W ANGELES | 2016-05-11 | yes | yes |
| 424-318 | Verizon | TORRANCE | 2016-05-16 | yes | yes |
| 424-319 | Bandwidth | CMTN GRDN | 2016-06-29 | yes | yes |
| 424-320 | Lumen | W ANGELES | 2013-10-08 | yes | yes |
| 424-321 | T-Mobile | EL SEGUNDO | 2013-06-17 | yes | yes |
| 424-322 | Lumen | SNMN SNMN | 2013-05-31 | yes | yes |
| 424-323 | Verizon | TORRANCE | 2017-09-01 | yes | yes |
| 424-324 | T-Mobile | BEVERLYHLS | 2014-03-07 | yes | yes |
| 424-325 | Peerless | W ANGELES | 2013-10-01 | yes | yes |
| 424-326 | Onvoy | CULVERCITY | – | yes | yes |
| 424-327 | Comcast | REDONDO | – | yes | yes |
| 424-328 | Lumen | LOMITA | 2013-02-04 | yes | yes |
| 424-329 | AT&T | CMTN GRDN | 2013-08-08 | yes | yes |
| 424-330 | Lumen | SNMN SNMN | 2015-07-29 | yes | yes |
| 424-331 | Bandwidth | INGLEWOOD | 2013-04-26 | yes | yes |
| 424-332 | T-Mobile | BEVERLYHLS | 2013-05-16 | yes | yes |
| 424-333 | Bandwidth | BEVERLYHLS | – | yes | yes |
| 424-334 | Lumen | AVALON | 2013-11-13 | yes | yes |
| 424-335 | T-Mobile | BEVERLYHLS | 2013-08-22 | yes | yes |
| 424-336 | Onvoy | HAWTHORNE | – | yes | yes |
| 424-337 | AT&T | TORRANCE | 2013-11-15 | yes | yes |
| 424-338 | AT&T | CMTN CMTN | 2013-11-26 | yes | yes |
| 424-339 | Onvoy | SAN PEDRO | 2015-03-23 | yes | yes |
| 424-340 | Peerless | CMTN GRDN | – | yes | yes |
| 424-341 | T-Mobile | CULVERCITY | 2013-12-09 | yes | yes |
| 424-342 | Lumen | SAN PEDRO | – | yes | yes |
| 424-343 | AT&T | BEVERLYHLS | 2014-03-14 | yes | yes |
| 424-344 | Verizon | CMTN GRDN | 2014-09-02 | yes | yes |
| 424-345 | Lumen | CULVERCITY | 2014-04-04 | yes | yes |
| 424-346 | Bandwidth | MALIBU | 2014-04-17 | yes | yes |
| 424-347 | Verizon | LOMITA | 2014-04-11 | yes | yes |
| 424-348 | Lumen | HAWTHORNE | 2014-05-02 | yes | yes |
| 424-349 | Onvoy | CMTN CMTN | 2015-04-06 | yes | yes |
| 424-350 | AT&T | REDONDO | 2015-08-27 | yes | yes |
| 424-351 | Lumen | INGLEWOOD | 2014-07-14 | yes | yes |
| 424-352 | Bandwidth | REDONDO | 2014-05-22 | yes | yes |
| 424-353 | Charter | SNMN MRVS | 2014-04-28 | yes | yes |
| 424-354 | Lumen | BEVERLYHLS | – | yes | yes |
| 424-355 | Lumen | BEVERLYHLS | 2014-10-03 | yes | yes |
| 424-356 | AT&T | INGLEWOOD | 2014-07-07 | yes | yes |
| 424-357 | AT&T | BEVERLYHLS | 2014-08-08 | yes | yes |
| 424-358 | AT&T | TORRANCE | 2014-08-21 | yes | yes |
| 424-359 | Verizon | BEVERLYHLS | 2015-04-10 | yes | yes |
| 424-360 | Verizon | TORRANCE | – | yes | yes |
| 424-361 | AT&T | CULVERCITY | 2014-09-09 | yes | yes |
| 424-362 | T-Mobile | BEVERLYHLS | 2014-08-21 | yes | yes |
| 424-363 | AT&T | BEVERLYHLS | 2014-09-09 | yes | yes |
| 424-364 | T-Mobile | SAN PEDRO | 2014-09-15 | yes | yes |
| 424-365 | Onvoy | W ANGELES | 2014-05-02 | yes | yes |
| 424-366 | T-Mobile | CMTN CMTN | 2016-06-28 | yes | yes |
| 424-367 | Lumen | EL SEGUNDO | 2014-09-19 | yes | yes |
| 424-368 | Onvoy | SAN PEDRO | – | yes | yes |
| 424-369 | Verizon | W ANGELES | 2015-04-13 | yes | yes |
| 424-370 | AT&T | CMTN CMTN | 2015-12-01 | yes | yes |
| 424-371 | Lumen | W ANGELES | 2014-09-24 | yes | yes |
| 424-372 | Lumen | W ANGELES | 2014-10-01 | yes | yes |
| 424-373 | T-Mobile | CMTN CMTN | 2014-09-30 | yes | yes |
| 424-374 | AT&T | HAWTHORNE | 2014-10-08 | yes | yes |
| 424-375 | Onvoy | CMTN GRDN | – | yes | yes |
| 424-376 | T-Mobile | TORRANCE | 2014-10-17 | yes | yes |
| 424-377 | Onvoy | AVALON | 2016-02-29 | yes | yes |
| 424-378 | Onvoy | LOMITA | – | yes | yes |
| 424-379 | AT&T | CMTN CMTN | 2015-07-06 | yes | yes |
| 424-380 | Onvoy | INGLEWOOD | 2016-07-18 | yes | yes |
| 424-381 | T-Mobile | CMTN CMTN | 2014-12-15 | yes | yes |
| 424-382 | T-Mobile | BEVERLYHLS | – | yes | yes |
| 424-383 | Verizon | REDONDO | 2014-11-10 | yes | yes |
| 424-384 | AT&T | SNMN MRVS | 2015-01-16 | yes | yes |
| 424-385 | T-Mobile | CULVERCITY | 2015-01-20 | yes | yes |
| 424-386 | T-Mobile | BEVERLYHLS | 2015-02-24 | yes | yes |
| 424-387 | T-Mobile | SNMN SNMN | 2015-01-23 | yes | yes |
| 424-388 | Verizon | MALIBU | 2016-06-01 | yes | yes |
| 424-389 | Bandwidth | BEVERLYHLS | 2015-07-24 | yes | yes |
| 424-390 | T-Mobile | REDONDO | 2016-08-29 | yes | yes |
| 424-391 | T-Mobile | HAWTHORNE | 2015-03-09 | yes | yes |
| 424-392 | T-Mobile | REDONDO | 2014-11-10 | yes | yes |
| 424-393 | T-Mobile | INGLEWOOD | 2014-12-30 | yes | yes |
| 424-394 | Bandwidth | BEVERLYHLS | 2015-03-25 | yes | yes |
| 424-395 | T-Mobile | MALIBU | 2015-02-24 | yes | yes |
| 424-396 | T-Mobile | CMTN GRDN | 2015-03-09 | yes | yes |
| 424-397 | Peerless | EL SEGUNDO | 2015-04-10 | yes | yes |
| 424-398 | Charter | REDONDO | 2015-06-03 | yes | yes |
| 424-399 | Peerless | TORRANCE | 2016-11-21 | yes | yes |
| 424-400 | Onvoy | REDONDO | – | yes | yes |
| 424-401 | Comcast | LOMITA | 2017-09-28 | yes | yes |
| 424-402 | AT&T | W ANGELES | 2016-07-22 | yes | yes |
| 424-403 | T-Mobile | CMTN CMTN | 2016-11-02 | yes | yes |
| 424-404 | Peerless | REDONDO | 2017-06-30 | yes | yes |
| 424-405 | Verizon | EL SEGUNDO | 2017-10-11 | yes | yes |
| 424-406 | Bandwidth | CMTN CMTN | 2018-04-02 | yes | yes |
| 424-407 | T-Mobile | W ANGELES | 2018-04-16 | yes | yes |
| 424-408 | Verizon | REDONDO | – | yes | yes |
| 424-409 | AT&T | REDONDO | 2018-03-22 | yes | yes |
| 424-410 | Verizon | SNMN MRVS | 2017-10-03 | yes | yes |
| 424-412 | SHELCOMM | INGLEWOOD | 2018-05-08 | – | yes |
| 424-413 | T-Mobile | SNMN SNMN | 2018-05-15 | yes | yes |
| 424-414 | Telnyx | INGLEWOOD | 2016-12-15 | yes | yes |
| 424-415 | T-Mobile | CMTN GRDN | 2020-02-05 | yes | yes |
| 424-416 | AT&T | SNMN SNMN | 2018-05-15 | yes | yes |
| 424-417 | TPx | SAN PEDRO | 2018-07-03 | yes | yes |
| 424-418 | SHELCOMM | BEVERLYHLS | 2018-07-31 | – | yes |
| 424-419 | Verizon | INGLEWOOD | 2018-01-26 | yes | yes |
| 424-420 | T-Mobile | INGLEWOOD | 2019-01-31 | yes | yes |
| 424-421 | T-Mobile | BEVERLYHLS | 2016-09-21 | yes | yes |
| 424-422 | Bandwidth | MALIBU | 2019-02-08 | yes | yes |
| 424-423 | AT&T | EL SEGUNDO | 2016-12-27 | yes | yes |
| 424-424 | FRACTEL, LLC | CMTN GRDN | 2020-05-27 | yes | yes |
| 424-425 | Verizon | MALIBU | 2018-03-06 | yes | yes |
| 424-426 | Verizon | HAWTHORNE | 2018-10-30 | yes | yes |
| 424-427 | Bandwidth | CMTN CMTN | 2019-02-05 | yes | yes |
| 424-428 | Bandwidth | SNMN MRVS | 2019-04-04 | yes | yes |
| 424-429 | T-Mobile | CMTN CMTN | 2019-05-10 | yes | yes |
| 424-430 | Bandwidth | CMTN GRDN | 2019-05-14 | yes | yes |
| 424-431 | Bandwidth | BEVERLYHLS | 2019-05-21 | yes | yes |
| 424-432 | VoIP Innovations | AVALON | 2019-07-18 | yes | yes |
| 424-433 | Charter | SNMN SNMN | – | yes | yes |
| 424-434 | Charter | CULVERCITY | 2019-05-06 | yes | yes |
| 424-435 | T-Mobile | TORRANCE | 2019-05-28 | yes | yes |
| 424-436 | T-Mobile | SNMN SNMN | 2019-08-05 | yes | yes |
| 424-437 | T-Mobile | HAWTHORNE | 2019-08-07 | yes | yes |
| 424-438 | Bandwidth | BEVERLYHLS | 2019-08-13 | yes | yes |
| 424-439 | AT&T | INGLEWOOD | 2019-09-11 | yes | yes |
| 424-440 | T-Mobile | W ANGELES | 2019-06-18 | yes | yes |
| 424-441 | Verizon | MALIBU | 2020-01-31 | yes | yes |
| 424-442 | Windstream | W ANGELES | 2008-06-24 | yes | yes |
| 424-443 | AT&T | SNMN MRVS | 2015-07-06 | yes | yes |
| 424-444 | Bandwidth | CMTN CMTN | – | yes | yes |
| 424-445 | AT&T | REDONDO | 2020-03-18 | yes | yes |
| 424-446 | AT&T | BEVERLYHLS | 2020-05-14 | yes | yes |
| 424-447 | Verizon | INGLEWOOD | 2020-09-08 | yes | yes |
| 424-448 | T-Mobile | BEVERLYHLS | 2021-03-19 | yes | yes |
| 424-449 | T-Mobile | CMTN CMTN | 2021-06-17 | yes | yes |
| 424-450 | AT&T | SAN PEDRO | 2019-07-17 | yes | yes |
| 424-451 | Verizon | SAN PEDRO | 2021-07-30 | yes | yes |
| 424-452 | Onvoy | REDONDO | 2016-01-05 | yes | yes |
| 424-453 | AT&T | BEVERLYHLS | 2021-08-25 | yes | yes |
| 424-454 | T-Mobile | CMTN CMTN | 2021-10-28 | yes | yes |
| 424-455 | FRACTEL, LLC | CULVERCITY | 2020-05-28 | yes | yes |
| 424-456 | Charter | HAWTHORNE | – | yes | yes |
| 424-457 | T-Mobile | BEVERLYHLS | 2021-08-17 | yes | yes |
| 424-458 | Bandwidth | REDONDO | 2021-08-26 | yes | yes |
| 424-459 | COMMIO, LLC | HAWTHORNE | 2021-09-23 | yes | yes |
| 424-460 | Bandwidth | CULVERCITY | 2021-10-28 | yes | yes |
| 424-461 | COMMIO, LLC | LOMITA | 2021-09-24 | yes | yes |
| 424-462 | T-Mobile | SAN PEDRO | 2021-11-18 | yes | yes |
| 424-463 | T-Mobile | INGLEWOOD | 2021-11-10 | yes | yes |
| 424-464 | Bandwidth | MALIBU | 2022-01-10 | yes | yes |
| 424-465 | Bandwidth | W ANGELES | – | yes | yes |
| 424-466 | FRACTEL, LLC | BEVERLYHLS | 2021-07-07 | yes | yes |
| 424-467 | T-Mobile | W ANGELES | 2022-01-14 | yes | yes |
| 424-468 | T-Mobile | BEVERLYHLS | 2021-12-02 | yes | yes |
| 424-469 | T-Mobile | CMTN GRDN | 2021-10-04 | yes | yes |
| 424-470 | T-Mobile | BEVERLYHLS | 2022-08-12 | yes | yes |
| 424-471 | T-Mobile | REDONDO | 2022-01-07 | yes | yes |
| 424-472 | TPx | BEVERLYHLS | 2022-06-30 | yes | yes |
| 424-473 | T-Mobile | SAN PEDRO | 2022-02-10 | yes | yes |
| 424-474 | TPx | CULVERCITY | 2022-06-29 | yes | yes |
| 424-475 | T-Mobile | TORRANCE | 2021-12-10 | yes | yes |
| 424-476 | Onvoy | REDONDO | – | yes | yes |
| 424-477 | Charter | SAN PEDRO | 2006-06-20 | yes | yes |
| 424-478 | Bandwidth | BEVERLYHLS | 2022-09-14 | yes | yes |
| 424-479 | AT&T | CULVERCITY | 2022-11-08 | yes | yes |
| 424-480 | Bandwidth | INGLEWOOD | 2022-09-14 | yes | yes |
| 424-481 | T-Mobile | HAWTHORNE | 2022-03-21 | yes | yes |
| 424-482 | T-Mobile | SAN PEDRO | 2022-08-15 | yes | yes |
| 424-483 | T-Mobile | W ANGELES | 2022-12-01 | yes | yes |
| 424-484 | Onvoy | TORRANCE | 2022-09-16 | yes | yes |
| 424-485 | T-Mobile | BEVERLYHLS | 2022-12-28 | yes | yes |
| 424-486 | AT&T | CMTN GRDN | 2023-01-26 | yes | yes |
| 424-487 | Verizon | SNMN SNMN | 2023-03-24 | yes | yes |
| 424-488 | Onvoy | TORRANCE | – | yes | yes |
| 424-489 | T-Mobile | SAN PEDRO | 2018-01-10 | yes | yes |
| 424-490 | Onvoy | SNMN SNMN | 2023-09-19 | yes | yes |
| 424-491 | Bandwidth | HAWTHORNE | 2022-10-21 | yes | yes |
| 424-492 | Onvoy | TORRANCE | 2023-06-26 | yes | yes |
| 424-493 | AT&T | MALIBU | 2023-06-29 | yes | yes |
| 424-494 | AT&T | SAN PEDRO | 2023-07-14 | yes | yes |
| 424-495 | Onvoy | LOMITA | 2023-08-17 | yes | yes |
| 424-496 | Onvoy | CMTN CMTN | 2023-08-17 | yes | yes |
| 424-497 | Verizon | HAWTHORNE | 2023-09-13 | yes | yes |
| 424-498 | Onvoy | HAWTHORNE | 2023-10-02 | yes | yes |
| 424-499 | Bandwidth | EL SEGUNDO | 2019-05-01 | yes | yes |
| 424-500 | Onvoy | SNMN MRVS | – | yes | yes |
| 424-501 | Onvoy | CULVERCITY | 2017-02-17 | yes | yes |
| 424-502 | Bandwidth | EL SEGUNDO | 2019-02-05 | yes | yes |
| 424-503 | AT&T | INGLEWOOD | 2023-10-26 | yes | yes |
| 424-504 | AT&T | CMTN CMTN | 2023-12-05 | yes | yes |
| 424-505 | AT&T | SAN PEDRO | 2024-01-25 | yes | yes |
| 424-506 | Onvoy | REDONDO | 2024-01-26 | yes | yes |
| 424-507 | Onvoy | CMTN CMTN | 2024-01-26 | yes | yes |
| 424-508 | Verizon | SNMN SNMN | 2024-01-29 | yes | yes |
| 424-509 | Onvoy | INGLEWOOD | 2024-02-29 | yes | yes |
| 424-510 | T-Mobile | CMTN CMTN | 2024-05-01 | yes | yes |
| 424-512 | Windstream | BEVERLYHLS | 2017-02-17 | yes | yes |
| 424-513 | T-Mobile | CMTN CMTN | 2024-05-31 | yes | yes |
| 424-514 | T-Mobile | W ANGELES | 2024-07-30 | yes | yes |
| 424-515 | Bandwidth | INGLEWOOD | 2024-08-16 | yes | yes |
| 424-516 | T-Mobile | LOMITA | 2024-09-09 | yes | yes |
| 424-517 | Bandwidth | SAN PEDRO | 2024-09-09 | yes | yes |
| 424-518 | Bandwidth | W ANGELES | 2024-09-19 | yes | yes |
| 424-519 | Bandwidth | SNMN SNMN | 2024-09-20 | yes | yes |
| 424-520 | T-Mobile | CMTN CMTN | 2024-11-08 | yes | yes |
| 424-521 | T-Mobile | CMTN CMTN | 2015-04-13 | yes | yes |
| 424-522 | Lumen | BEVERLYHLS | 2015-07-29 | yes | yes |
| 424-523 | T-Mobile | CULVERCITY | 2015-04-13 | yes | yes |
| 424-524 | Charter | MALIBU | 2021-01-28 | yes | yes |
| 424-525 | Charter | SNMN MRVS | 2022-07-18 | yes | yes |
| 424-526 | Lumen | SNMN MRVS | 2015-06-26 | yes | yes |
| 424-527 | T-Mobile | BEVERLYHLS | 2015-07-02 | yes | yes |
| 424-528 | AT&T | CMTN GRDN | 2017-03-17 | yes | yes |
| 424-529 | Onvoy | CMTN CMTN | – | yes | yes |
| 424-530 | AT&T | CMTN CMTN | 2024-11-12 | yes | yes |
| 424-531 | T-Mobile | CMTN GRDN | 2015-04-14 | yes | yes |
| 424-532 | Bandwidth | CULVERCITY | 2015-06-04 | yes | yes |
| 424-533 | AT&T | SAN PEDRO | 2015-12-14 | yes | yes |
| 424-534 | AT&T | SAN PEDRO | 2024-11-25 | yes | yes |
| 424-535 | T-Mobile | W ANGELES | 2015-04-16 | yes | yes |
| 424-536 | Verizon | SAN PEDRO | 2015-06-18 | yes | yes |
| 424-537 | T-Mobile | SNMN MRVS | 2016-08-31 | yes | yes |
| 424-538 | AT&T | SNMN SNMN | 2017-01-23 | yes | yes |
| 424-539 | AT&T | CMTN GRDN | 2024-12-03 | yes | yes |
| 424-540 | AT&T | SAN PEDRO | 2025-01-03 | yes | yes |
| 424-541 | AT&T | INGLEWOOD | 2016-11-01 | yes | yes |
| 424-542 | Peerless | BEVERLYHLS | – | yes | yes |
| 424-543 | Lumen | CULVERCITY | – | yes | yes |
| 424-544 | FRACTEL, LLC | EL SEGUNDO | 2022-01-21 | yes | yes |
| 424-545 | AT&T | SNMN SNMN | 2025-01-06 | yes | yes |
| 424-546 | Charter | TORRANCE | 2025-01-27 | yes | yes |
| 424-547 | T-Mobile | INGLEWOOD | 2024-05-10 | yes | yes |
| 424-548 | Onvoy | MALIBU | 2025-03-11 | yes | yes |
| 424-549 | Onvoy | CULVERCITY | 2025-03-13 | yes | yes |
| 424-550 | Onvoy | BEVERLYHLS | 2025-03-13 | yes | yes |
| 424-551 | Onvoy | CMTN GRDN | – | yes | yes |
| 424-552 | Onvoy | SAN PEDRO | – | yes | yes |
| 424-553 | AT&T | BEVERLYHLS | 2025-03-14 | yes | yes |
| 424-554 | AT&T | W ANGELES | 2025-04-03 | yes | yes |
| 424-556 | T-Mobile | SNMN SNMN | 2025-06-05 | yes | yes |
| 424-557 | Verizon | EL SEGUNDO | 2025-07-28 | yes | yes |
| 424-558 | AT&T | TORRANCE | 2006-03-16 | yes | yes |
| 424-559 | Verizon | W ANGELES | 2018-01-12 | yes | yes |
| 424-560 | Onvoy | CMTN GRDN | 2025-09-03 | yes | yes |
| 424-561 | Onvoy | REDONDO | 2025-10-09 | yes | yes |
| 424-562 | Onvoy | SNMN MRVS | 2025-10-09 | yes | yes |
| 424-563 | Onvoy | HAWTHORNE | 2026-01-30 | yes | yes |
| 424-564 | Onvoy | LOMITA | 2026-03-11 | yes | yes |
| 424-565 | AT&T | TORRANCE | 2023-06-30 | yes | yes |
| 424-566 | FRACTEL, LLC | BEVERLYHLS | 2021-04-01 | yes | yes |
| 424-567 | Onvoy | HAWTHORNE | – | yes | yes |
| 424-568 | Windstream | INGLEWOOD | 2006-09-21 | yes | yes |
| 424-569 | Onvoy | SNMN SNMN | 2026-05-21 | yes | yes |
| 424-570 | Lumen | SAN PEDRO | 2009-12-16 | yes | yes |
| 424-571 | T-Mobile | TORRANCE | 2009-12-15 | yes | yes |
| 424-572 | Verizon | REDONDO | 2026-05-26 | yes | yes |
| 424-573 | Verizon | BEVERLYHLS | 2026-06-12 | yes | no |
| 424-574 | Onvoy | SNMN MRVS | 2026-06-26 | yes | no |
| 424-575 | Onvoy | CMTN GRDN | 2026-08-11 | yes | yes |
| 424-576 | AT&T | BEVERLYHLS | 2026-08-14 | yes | no |
| 424-577 | FRACTEL, LLC | INGLEWOOD | 2020-05-28 | yes | yes |
| 424-578 | Onvoy | INGLEWOOD | 2026-08-19 | yes | no |
| 424-579 | Onvoy | REDONDO | 2026-08-19 | yes | no |
| 424-580 | Onvoy | SAN PEDRO | 2026-08-19 | yes | no |
| 424-581 | AT&T | SNMN SNMN | 2015-12-14 | yes | yes |
| 424-582 | Onvoy | W ANGELES | 2026-08-19 | yes | no |
| 424-583 | Onvoy | TORRANCE | 2026-08-27 | yes | no |
| 424-584 | Onvoy | CULVERCITY | 2026-09-03 | yes | yes |
| 424-587 | FRACTEL, LLC | CULVERCITY | 2021-06-17 | yes | yes |
| 424-588 | FRACTEL, LLC | HAWTHORNE | 2020-07-02 | yes | yes |
| 424-599 | FRACTEL, LLC | BEVERLYHLS | 2021-04-01 | yes | yes |
| 424-600 | Onvoy | BEVERLYHLS | – | yes | yes |
| 424-603 | AT&T | CULVERCITY | 2006-06-19 | yes | yes |
| 424-610 | Verizon | SNMN SNMN | 2014-06-24 | yes | yes |
| 424-622 | FRACTEL, LLC | CMTN CMTN | 2022-05-27 | yes | yes |
| 424-624 | Onvoy | SNMN MRVS | 2024-06-03 | yes | yes |
| 424-625 | Lumen | SNMN MRVS | 2008-05-28 | yes | yes |
| 424-626 | Charter | W ANGELES | 2022-07-18 | yes | yes |
| 424-630 | Charter | REDONDO | 2024-11-07 | yes | yes |
| 424-634 | Lumen | REDONDO | 2006-05-01 | yes | yes |
| 424-640 | Charter | W ANGELES | 2024-11-07 | yes | yes |
| 424-644 | Charter | MALIBU | 2006-04-26 | yes | yes |
| 424-645 | Lumen | SNMN SNMN | 2006-05-16 | yes | yes |
| 424-646 | AT&T | INGLEWOOD | 2008-09-02 | yes | yes |
| 424-652 | Lumen | W ANGELES | – | yes | yes |
| 424-653 | Verizon | BEVERLYHLS | 2006-07-07 | yes | yes |
| 424-655 | FRACTEL, LLC | INGLEWOOD | 2022-03-23 | yes | yes |
| 424-660 | Charter | SNMN MRVS | 2024-11-07 | yes | yes |
| 424-666 | Bandwidth | BEVERLYHLS | – | yes | yes |
| 424-667 | FRACTEL, LLC | LOMITA | 2021-01-04 | yes | yes |
| 424-672 | Onvoy | CULVERCITY | – | yes | yes |
| 424-675 | AT&T | HAWTHORNE | 2006-03-20 | yes | yes |
| 424-677 | FRACTEL, LLC | REDONDO | 2020-05-28 | yes | yes |
| 424-678 | AT&T | EL SEGUNDO | 2021-05-03 | yes | yes |
| 424-688 | FRACTEL, LLC | LOMITA | 2020-06-05 | yes | yes |
| 424-699 | FRACTEL, LLC | TORRANCE | 2021-07-08 | yes | yes |
| 424-702 | T-Mobile | INGLEWOOD | – | yes | yes |
| 424-703 | T-Mobile | SAN PEDRO | 2010-01-05 | yes | yes |
| 424-704 | Onvoy | CMTN CMTN | 2006-10-06 | yes | yes |
| 424-722 | FRACTEL, LLC | SNMN SNMN | 2021-09-16 | yes | yes |
| 424-724 | Onvoy | CMTN CMTN | 2022-11-04 | yes | yes |
| 424-728 | TON80 COMMUNICATIONS, LLC | CMTN GRDN | 2022-01-07 | yes | yes |
| 424-731 | Verizon | TORRANCE | 2006-07-18 | yes | yes |
| 424-732 | Onvoy | INGLEWOOD | – | yes | yes |
| 424-738 | AT&T | AVALON | 2009-12-14 | yes | yes |
| 424-744 | Lumen | SNMN SNMN | 2006-09-12 | yes | yes |
| 424-750 | Lumen | INGLEWOOD | 2006-03-31 | yes | yes |
| 424-757 | Bandwidth | TORRANCE | – | yes | yes |
| 424-758 | FRACTEL, LLC | CMTN CMTN | 2019-05-20 | yes | yes |
| 424-766 | FRACTEL, LLC | SNMN MRVS | 2020-05-28 | yes | yes |
| 424-768 | TON80 COMMUNICATIONS, LLC | CMTN CMTN | 2022-01-10 | yes | yes |
| 424-770 | Charter | CMTN CMTN | 2024-11-07 | yes | yes |
| 424-772 | Comcast | SAN PEDRO | – | yes | yes |
| 424-777 | Bandwidth | BEVERLYHLS | – | yes | yes |
| 424-780 | Charter | HAWTHORNE | 2024-11-07 | yes | yes |
| 424-781 | Onvoy | MALIBU | 2006-10-04 | yes | yes |
| 424-785 | Lumen | CMTN CMTN | 2006-10-11 | yes | yes |
| 424-786 | FRACTEL, LLC | MALIBU | 2020-07-31 | yes | yes |
| 424-788 | FRACTEL, LLC | SAN PEDRO | 2020-05-28 | yes | yes |
| 424-789 | Lumen | INGLEWOOD | 2006-03-28 | yes | yes |
| 424-790 | Charter | INGLEWOOD | 2024-11-07 | yes | yes |
| 424-799 | FRACTEL, LLC | MALIBU | 2021-02-25 | yes | yes |
| 424-800 | Onvoy | INGLEWOOD | – | yes | yes |
| 424-832 | Verizon | W ANGELES | 2006-07-18 | yes | yes |
| 424-835 | Charter | SNMN MRVS | 2008-06-26 | yes | yes |
| 424-842 | FRACTEL, LLC | W ANGELES | 2020-07-10 | yes | yes |
| 424-844 | FRACTEL, LLC | SNMN SNMN | 2022-02-22 | yes | yes |
| 424-850 | Charter | EL SEGUNDO | 2023-04-12 | yes | yes |
| 424-855 | FRACTEL, LLC | AVALON | 2022-05-10 | yes | yes |
| 424-857 | FRACTEL, LLC | SNMN MRVS | 2021-09-21 | yes | yes |
| 424-866 | FRACTEL, LLC | REDONDO | 2021-09-16 | yes | yes |
| 424-867 | COMMIO, LLC | CMTN CMTN | 2022-02-14 | yes | yes |
| 424-877 | FRACTEL, LLC | SNMN SNMN | 2020-05-28 | yes | yes |
| 424-888 | Onvoy | INGLEWOOD | – | yes | yes |
| 424-899 | FRACTEL, LLC | INGLEWOOD | 2021-08-31 | yes | yes |
| 424-900 | Onvoy | W ANGELES | – | yes | yes |
| 424-901 | T-Mobile | W ANGELES | 2006-03-30 | yes | yes |
| 424-902 | Charter | SNMN SNMN | 2021-11-16 | yes | yes |
| 424-903 | Lumen | REDONDO | 2006-12-13 | yes | yes |
| 424-944 | FRACTEL, LLC | BEVERLYHLS | 2022-03-23 | yes | yes |
| 424-946 | FRACTEL, LLC | W ANGELES | 2020-05-28 | yes | yes |
| 424-955 | FRACTEL, LLC | CMTN CMTN | 2021-09-21 | yes | yes |
| 424-966 | FRACTEL, LLC | REDONDO | 2020-11-06 | yes | yes |
| 424-977 | FRACTEL, LLC | W ANGELES | 2021-09-24 | yes | yes |
| 424-996 | Onvoy | INGLEWOOD | 2026-03-02 | yes | yes |
| 424-997 | Onvoy | CMTN GRDN | 2024-06-13 | yes | yes |
| 424-998 | AT&T | HAWTHORNE | 2023-12-11 | yes | yes |
| 424-999 | Onvoy | TORRANCE | – | yes | yes |
Frequently asked
How many prefixes does area code 424 have?
460 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 4,600 thousand-number ranges across 16 rate centers.
What do the first three digits after 424 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 424 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 424 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 458 of 424'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