Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 310 prefixes
786 of the 786 possible NXX blocks are assigned in area code 310 (100.0% of capacity), spread across 17 rate centers and 25 holders. The largest holders are PACIFIC BELL (249 blocks, 31.7%), FRONTIER CALIFORNIA INC. (137 blocks, 17.4%), NEW CINGULAR WIRELESS PCS, LLC (68 blocks, 8.7%). Grouped by brand, AT&T accounts for 343 blocks; brand-attributable holders cover 98% 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 2001-02-28 to 2025-11-20, with 45 blocks handed out in 2001 alone. 354 blocks (45%) 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. 52 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
786 assigned blocks of 786
17 rate centers
25 holders of record
45% in thousands-block pooling
Largest holders in 310
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| PACIFIC BELL | AT&T | 249 | 31.7% |
| FRONTIER CALIFORNIA INC. | Frontier | 137 | 17.4% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 68 | 8.7% |
| T-MOBILE USA, INC. | T-Mobile | 58 | 7.4% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 56 | 7.1% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | Verizon | 27 | 3.4% |
| SPOK, INC. | Spok | 24 | 3.1% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 24 | 3.1% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 22 | 2.8% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 20 | 2.5% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 19 | 2.4% |
| ONVOY, LLC - CA | Onvoy | 17 | 2.2% |
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 786 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 |
|---|---|---|---|---|---|
| 310-200 | AT&T | CMTN GRDN | 2001-04-19 | – | yes |
| 310-201 | AT&T | BEVERLYHLS | – | – | yes |
| 310-202 | AT&T | CULVERCITY | – | – | yes |
| 310-203 | AT&T | BEVERLYHLS | – | – | yes |
| 310-204 | AT&T | CULVERCITY | – | – | yes |
| 310-205 | AT&T | BEVERLYHLS | – | – | yes |
| 310-206 | Frontier | W ANGELES | – | – | yes |
| 310-207 | Frontier | W ANGELES | – | – | yes |
| 310-208 | Frontier | W ANGELES | – | yes | yes |
| 310-209 | Frontier | W ANGELES | – | yes | yes |
| 310-210 | AT&T | W ANGELES | – | – | yes |
| 310-212 | AT&T | TORRANCE | – | – | yes |
| 310-213 | T-Mobile | CMTN GRDN | – | yes | yes |
| 310-214 | Frontier | REDONDO | – | – | yes |
| 310-215 | AT&T | INGLEWOOD | – | – | yes |
| 310-216 | AT&T | INGLEWOOD | – | yes | yes |
| 310-217 | AT&T | CMTN GRDN | – | – | yes |
| 310-218 | Verizon | TORRANCE | – | yes | yes |
| 310-219 | AT&T | HAWTHORNE | – | yes | yes |
| 310-220 | Verizon | HAWTHORNE | – | yes | yes |
| 310-221 | AT&T | SAN PEDRO | – | yes | yes |
| 310-222 | AT&T | TORRANCE | – | – | yes |
| 310-223 | AT&T | CMTN CMTN | – | – | yes |
| 310-224 | AT&T | TORRANCE | – | – | yes |
| 310-225 | AT&T | CMTN GRDN | – | yes | yes |
| 310-226 | AT&T | BEVERLYHLS | – | – | yes |
| 310-227 | T-Mobile | EL SEGUNDO | 2001-05-03 | yes | yes |
| 310-228 | AT&T | BEVERLYHLS | – | yes | yes |
| 310-229 | AT&T | BEVERLYHLS | – | – | yes |
| 310-230 | Frontier | SNMN SNMN | – | yes | yes |
| 310-231 | Frontier | W ANGELES | – | – | yes |
| 310-232 | Spok | SNMN SNMN | – | – | yes |
| 310-233 | AT&T | SAN PEDRO | – | – | yes |
| 310-234 | Frontier | W ANGELES | – | – | yes |
| 310-235 | Frontier | W ANGELES | – | – | yes |
| 310-236 | Spok | SNMN SNMN | – | – | yes |
| 310-237 | AT&T | CULVERCITY | – | yes | yes |
| 310-238 | Spok | SNMN SNMN | – | – | yes |
| 310-239 | Spok | SNMN SNMN | – | – | yes |
| 310-240 | Spok | CMTN GRDN | – | – | yes |
| 310-241 | AT&T | SAN PEDRO | – | yes | yes |
| 310-242 | AT&T | INGLEWOOD | – | yes | yes |
| 310-243 | AT&T | CMTN GRDN | – | yes | yes |
| 310-244 | AT&T | CULVERCITY | – | – | yes |
| 310-245 | AT&T | CMTN GRDN | 2001-04-19 | – | yes |
| 310-246 | AT&T | BEVERLYHLS | – | – | yes |
| 310-247 | AT&T | BEVERLYHLS | – | – | yes |
| 310-248 | AT&T | BEVERLYHLS | – | yes | yes |
| 310-249 | Spok | CMTN GRDN | – | – | yes |
| 310-250 | Spok | CMTN GRDN | – | – | yes |
| 310-251 | AT&T | CMTN GRDN | 2001-04-19 | – | yes |
| 310-252 | AT&T | EL SEGUNDO | – | – | yes |
| 310-253 | AT&T | CULVERCITY | – | – | yes |
| 310-254 | Verizon | W ANGELES | – | yes | yes |
| 310-255 | AT&T | SNMN SNMN | – | – | yes |
| 310-256 | Verizon | INGLEWOOD | 2005-03-22 | yes | yes |
| 310-257 | AT&T | LOMITA | – | – | yes |
| 310-258 | AT&T | INGLEWOOD | – | – | yes |
| 310-259 | AT&T | INGLEWOOD | – | – | yes |
| 310-260 | Frontier | SNMN SNMN | – | – | yes |
| 310-261 | T-Mobile | SNMN SNMN | – | yes | yes |
| 310-262 | Spok | SNMN SNMN | – | – | yes |
| 310-263 | AT&T | HAWTHORNE | – | yes | yes |
| 310-264 | Frontier | SNMN SNMN | – | – | yes |
| 310-265 | Frontier | REDONDO | – | yes | yes |
| 310-266 | AT&T | SNMN SNMN | – | – | yes |
| 310-267 | Frontier | SNMN SNMN | – | – | yes |
| 310-268 | Frontier | W ANGELES | – | – | yes |
| 310-269 | UTILITY TELECOM GROUP, LLC - CA | BEVERLYHLS | 2023-06-22 | yes | yes |
| 310-270 | AT&T | BEVERLYHLS | – | yes | yes |
| 310-271 | AT&T | BEVERLYHLS | – | – | yes |
| 310-272 | T-Mobile | BEVERLYHLS | – | yes | yes |
| 310-273 | AT&T | BEVERLYHLS | – | – | yes |
| 310-274 | AT&T | BEVERLYHLS | – | – | yes |
| 310-275 | AT&T | BEVERLYHLS | – | – | yes |
| 310-276 | AT&T | BEVERLYHLS | – | – | yes |
| 310-277 | AT&T | BEVERLYHLS | – | – | yes |
| 310-278 | AT&T | BEVERLYHLS | – | – | yes |
| 310-279 | AT&T | BEVERLYHLS | – | yes | yes |
| 310-280 | AT&T | CULVERCITY | – | yes | yes |
| 310-281 | AT&T | BEVERLYHLS | – | – | yes |
| 310-282 | AT&T | BEVERLYHLS | – | – | yes |
| 310-283 | AT&T | CMTN GRDN | 2001-04-19 | – | yes |
| 310-284 | AT&T | BEVERLYHLS | – | – | yes |
| 310-285 | AT&T | BEVERLYHLS | – | – | yes |
| 310-286 | AT&T | BEVERLYHLS | – | – | yes |
| 310-287 | AT&T | CULVERCITY | – | – | yes |
| 310-288 | AT&T | BEVERLYHLS | – | – | yes |
| 310-289 | AT&T | BEVERLYHLS | – | yes | yes |
| 310-290 | T-Mobile | BEVERLYHLS | 2020-12-11 | yes | yes |
| 310-291 | AT&T | CMTN GRDN | 2001-04-19 | – | yes |
| 310-292 | AT&T | CMTN GRDN | 2001-04-19 | – | yes |
| 310-293 | AT&T | CMTN GRDN | – | – | yes |
| 310-294 | Lumen | TORRANCE | 2005-09-29 | yes | yes |
| 310-295 | Lumen | W ANGELES | 2005-09-29 | yes | yes |
| 310-296 | American Messaging | CMTN GRDN | – | – | yes |
| 310-297 | AT&T | HAWTHORNE | – | yes | yes |
| 310-298 | Spok | CMTN GRDN | – | – | yes |
| 310-299 | Lumen | BEVERLYHLS | 2012-08-13 | yes | yes |
| 310-300 | Verizon | BEVERLYHLS | – | yes | yes |
| 310-301 | Frontier | SNMN MRVS | – | – | yes |
| 310-302 | Frontier | SNMN MRVS | – | yes | yes |
| 310-303 | AT&T | REDONDO | – | yes | yes |
| 310-304 | Onvoy | LOMITA | 2023-06-26 | yes | yes |
| 310-305 | Frontier | SNMN MRVS | – | – | yes |
| 310-306 | Frontier | SNMN MRVS | – | – | yes |
| 310-307 | T-Mobile | W ANGELES | 2012-10-02 | yes | yes |
| 310-308 | AT&T | CMTN GRDN | – | – | yes |
| 310-309 | AT&T | SNMN SNMN | – | yes | yes |
| 310-310 | T-Mobile | SNMN SNMN | 2006-11-07 | yes | yes |
| 310-312 | Frontier | W ANGELES | – | – | yes |
| 310-313 | Frontier | SNMN MRVS | – | – | yes |
| 310-314 | Frontier | SNMN SNMN | – | – | yes |
| 310-315 | Frontier | SNMN SNMN | – | – | yes |
| 310-316 | Frontier | REDONDO | – | – | yes |
| 310-317 | Frontier | MALIBU | – | yes | yes |
| 310-318 | Frontier | REDONDO | – | yes | yes |
| 310-319 | Frontier | SNMN SNMN | – | – | yes |
| 310-320 | AT&T | TORRANCE | – | – | yes |
| 310-321 | TPx | EL SEGUNDO | – | yes | yes |
| 310-322 | AT&T | EL SEGUNDO | – | – | yes |
| 310-323 | AT&T | CMTN GRDN | – | – | yes |
| 310-324 | AT&T | CMTN GRDN | – | – | yes |
| 310-325 | AT&T | LOMITA | – | – | yes |
| 310-326 | AT&T | LOMITA | – | – | yes |
| 310-327 | AT&T | CMTN GRDN | – | – | yes |
| 310-328 | AT&T | TORRANCE | – | – | yes |
| 310-329 | AT&T | CMTN GRDN | – | – | yes |
| 310-330 | AT&T | INGLEWOOD | – | yes | yes |
| 310-331 | AT&T | HAWTHORNE | – | yes | yes |
| 310-332 | AT&T | HAWTHORNE | – | – | yes |
| 310-333 | AT&T | EL SEGUNDO | – | – | yes |
| 310-334 | AT&T | EL SEGUNDO | – | yes | yes |
| 310-335 | AT&T | EL SEGUNDO | – | – | yes |
| 310-336 | AT&T | EL SEGUNDO | – | – | yes |
| 310-337 | AT&T | INGLEWOOD | – | – | yes |
| 310-338 | AT&T | INGLEWOOD | – | – | yes |
| 310-339 | Verizon | SNMN MRVS | – | – | yes |
| 310-340 | AT&T | HAWTHORNE | 2017-01-16 | yes | yes |
| 310-341 | AT&T | EL SEGUNDO | – | yes | yes |
| 310-342 | AT&T | INGLEWOOD | – | – | yes |
| 310-343 | AT&T | EL SEGUNDO | – | yes | yes |
| 310-344 | AT&T | CMTN GRDN | 2001-04-19 | – | yes |
| 310-345 | T-Mobile | CMTN GRDN | – | yes | yes |
| 310-346 | T-Mobile | CMTN GRDN | – | yes | yes |
| 310-347 | AT&T | TORRANCE | – | yes | yes |
| 310-348 | AT&T | INGLEWOOD | – | – | yes |
| 310-349 | AT&T | HAWTHORNE | – | yes | yes |
| 310-350 | T-Mobile | TORRANCE | 2001-12-26 | yes | yes |
| 310-351 | Verizon | SNMN MRVS | – | – | yes |
| 310-352 | AT&T | CMTN GRDN | – | yes | yes |
| 310-353 | AT&T | CMTN GRDN | – | yes | yes |
| 310-354 | AT&T | CMTN GRDN | – | – | yes |
| 310-355 | AT&T | HAWTHORNE | – | yes | yes |
| 310-356 | Lumen | EL SEGUNDO | – | yes | yes |
| 310-357 | AT&T | TORRANCE | – | yes | yes |
| 310-358 | AT&T | BEVERLYHLS | – | – | yes |
| 310-359 | T-Mobile | MALIBU | – | yes | yes |
| 310-360 | AT&T | BEVERLYHLS | – | – | yes |
| 310-361 | Onvoy | CMTN CMTN | – | – | yes |
| 310-362 | Onvoy | BEVERLYHLS | – | – | yes |
| 310-363 | AT&T | HAWTHORNE | – | yes | yes |
| 310-364 | AT&T | EL SEGUNDO | – | – | yes |
| 310-365 | Verizon | CMTN GRDN | – | – | yes |
| 310-366 | AT&T | CMTN GRDN | – | – | yes |
| 310-367 | Verizon | SNMN MRVS | – | – | yes |
| 310-368 | Spok | CMTN GRDN | – | – | yes |
| 310-369 | AT&T | BEVERLYHLS | – | – | yes |
| 310-370 | Frontier | REDONDO | – | – | yes |
| 310-371 | Frontier | REDONDO | – | – | yes |
| 310-372 | Frontier | REDONDO | – | – | yes |
| 310-373 | Frontier | REDONDO | – | – | yes |
| 310-374 | Frontier | REDONDO | – | – | yes |
| 310-375 | Frontier | REDONDO | – | – | yes |
| 310-376 | Frontier | REDONDO | – | – | yes |
| 310-377 | Frontier | REDONDO | – | – | yes |
| 310-378 | Frontier | REDONDO | – | – | yes |
| 310-379 | Frontier | REDONDO | – | – | yes |
| 310-380 | AT&T | CMTN GRDN | – | yes | yes |
| 310-381 | AT&T | TORRANCE | – | yes | yes |
| 310-382 | Lumen | SNMN SNMN | – | yes | yes |
| 310-383 | AT&T | SNMN MRVS | – | – | yes |
| 310-384 | AT&T | CULVERCITY | – | – | yes |
| 310-385 | AT&T | BEVERLYHLS | – | – | yes |
| 310-386 | Verizon | CMTN GRDN | – | – | yes |
| 310-387 | Verizon | CMTN GRDN | – | – | yes |
| 310-388 | Onvoy | BEVERLYHLS | – | yes | yes |
| 310-389 | American Messaging | CMTN GRDN | – | – | yes |
| 310-390 | Frontier | SNMN MRVS | – | – | yes |
| 310-391 | Frontier | SNMN MRVS | – | – | yes |
| 310-392 | Frontier | SNMN SNMN | – | – | yes |
| 310-393 | Frontier | SNMN SNMN | – | – | yes |
| 310-394 | Frontier | SNMN SNMN | – | – | yes |
| 310-395 | Frontier | SNMN SNMN | – | – | yes |
| 310-396 | Frontier | SNMN SNMN | – | – | yes |
| 310-397 | Frontier | SNMN MRVS | – | – | yes |
| 310-398 | Frontier | SNMN MRVS | – | – | yes |
| 310-399 | Frontier | SNMN SNMN | – | – | yes |
| 310-400 | T-Mobile | CMTN GRDN | – | yes | yes |
| 310-401 | Lumen | SNMN SNMN | – | yes | yes |
| 310-402 | Lumen | BEVERLYHLS | – | yes | yes |
| 310-403 | T-Mobile | SNMN SNMN | – | yes | yes |
| 310-404 | T-Mobile | CMTN GRDN | – | yes | yes |
| 310-405 | Verizon | W ANGELES | – | yes | yes |
| 310-406 | Frontier | REDONDO | – | yes | yes |
| 310-407 | AT&T | BEVERLYHLS | – | yes | yes |
| 310-408 | AT&T | TORRANCE | – | – | yes |
| 310-409 | IP HORIZON LLC | BEVERLYHLS | – | yes | yes |
| 310-410 | AT&T | INGLEWOOD | – | – | yes |
| 310-412 | AT&T | INGLEWOOD | – | – | yes |
| 310-413 | Verizon | CMTN GRDN | – | – | yes |
| 310-414 | AT&T | EL SEGUNDO | – | yes | yes |
| 310-415 | Verizon | CMTN GRDN | – | – | yes |
| 310-416 | AT&T | EL SEGUNDO | – | – | yes |
| 310-417 | AT&T | INGLEWOOD | – | yes | yes |
| 310-418 | AT&T | CMTN GRDN | 2001-04-19 | – | yes |
| 310-419 | AT&T | INGLEWOOD | – | – | yes |
| 310-420 | T-Mobile | SNMN SNMN | – | yes | yes |
| 310-421 | T-Mobile | REDONDO | – | yes | yes |
| 310-422 | Verizon | SNMN MRVS | – | – | yes |
| 310-423 | AT&T | BEVERLYHLS | – | – | yes |
| 310-424 | Windstream | BEVERLYHLS | 2006-02-02 | yes | yes |
| 310-425 | Verizon | CULVERCITY | 2005-09-29 | yes | yes |
| 310-426 | AT&T | EL SEGUNDO | – | yes | yes |
| 310-427 | Verizon | SAN PEDRO | – | yes | yes |
| 310-428 | T-Mobile | SNMN SNMN | – | yes | yes |
| 310-429 | Verizon | SNMN MRVS | – | – | yes |
| 310-430 | T-Mobile | SNMN SNMN | 2002-09-06 | yes | yes |
| 310-431 | AT&T | INGLEWOOD | – | yes | yes |
| 310-432 | TPx | BEVERLYHLS | – | yes | yes |
| 310-433 | Verizon | SNMN MRVS | – | – | yes |
| 310-434 | Frontier | SNMN SNMN | – | – | yes |
| 310-435 | AT&T | BEVERLYHLS | – | – | yes |
| 310-436 | TPx | CMTN GRDN | – | yes | yes |
| 310-437 | Verizon | SNMN MRVS | – | yes | yes |
| 310-438 | T-Mobile | CMTN CMTN | – | yes | yes |
| 310-439 | Frontier | SNMN MRVS | – | yes | yes |
| 310-440 | Frontier | W ANGELES | – | – | yes |
| 310-441 | Frontier | W ANGELES | – | – | yes |
| 310-442 | Frontier | W ANGELES | – | – | yes |
| 310-443 | Frontier | W ANGELES | – | – | yes |
| 310-444 | Frontier | W ANGELES | – | – | yes |
| 310-445 | Frontier | W ANGELES | – | – | yes |
| 310-446 | Frontier | W ANGELES | – | – | yes |
| 310-447 | Frontier | W ANGELES | – | yes | yes |
| 310-448 | Frontier | SNMN MRVS | – | yes | yes |
| 310-449 | Frontier | SNMN SNMN | – | – | yes |
| 310-450 | Frontier | SNMN SNMN | – | – | yes |
| 310-451 | Frontier | SNMN SNMN | – | – | yes |
| 310-452 | Frontier | SNMN SNMN | – | – | yes |
| 310-453 | Frontier | SNMN SNMN | – | – | yes |
| 310-454 | Frontier | SNMN SNMN | – | – | yes |
| 310-455 | Frontier | SNMN SNMN | – | yes | yes |
| 310-456 | Frontier | MALIBU | – | yes | yes |
| 310-457 | Frontier | MALIBU | – | – | yes |
| 310-458 | Frontier | SNMN SNMN | – | – | yes |
| 310-459 | Frontier | SNMN SNMN | – | – | yes |
| 310-460 | Verizon | SNMN SNMN | – | yes | yes |
| 310-461 | TPx | BEVERLYHLS | – | yes | yes |
| 310-462 | T-Mobile | INGLEWOOD | 2002-02-22 | yes | yes |
| 310-463 | AT&T | SNMN SNMN | – | – | yes |
| 310-464 | Lumen | CMTN GRDN | – | yes | yes |
| 310-465 | Frontier | REDONDO | – | yes | yes |
| 310-466 | T-Mobile | SNMN SNMN | – | yes | yes |
| 310-467 | AT&T | BEVERLYHLS | 2001-04-17 | yes | yes |
| 310-468 | AT&T | TORRANCE | – | – | yes |
| 310-469 | Lumen | EL SEGUNDO | – | yes | yes |
| 310-470 | Frontier | W ANGELES | – | – | yes |
| 310-471 | Frontier | W ANGELES | – | – | yes |
| 310-472 | Frontier | W ANGELES | – | – | yes |
| 310-473 | Frontier | W ANGELES | – | – | yes |
| 310-474 | Frontier | W ANGELES | – | – | yes |
| 310-475 | Frontier | W ANGELES | – | – | yes |
| 310-476 | Frontier | W ANGELES | – | – | yes |
| 310-477 | Frontier | W ANGELES | – | – | yes |
| 310-478 | Frontier | W ANGELES | – | – | yes |
| 310-479 | Frontier | W ANGELES | – | – | yes |
| 310-480 | AT&T | CMTN GRDN | 2001-04-19 | – | yes |
| 310-481 | AT&T | W ANGELES | – | – | yes |
| 310-482 | AT&T | SNMN MRVS | – | yes | yes |
| 310-483 | Lumen | TORRANCE | 2001-05-03 | yes | yes |
| 310-484 | TPx | INGLEWOOD | – | yes | yes |
| 310-485 | 33 WIRELESS INC. | CULVERCITY | – | – | yes |
| 310-486 | Verizon | SNMN MRVS | – | – | yes |
| 310-487 | Verizon | SNMN MRVS | – | – | yes |
| 310-488 | Verizon | SNMN MRVS | – | – | yes |
| 310-489 | AT&T | CMTN GRDN | 2001-04-19 | – | yes |
| 310-490 | Verizon | SNMN MRVS | – | – | yes |
| 310-491 | Lumen | INGLEWOOD | – | yes | yes |
| 310-492 | Verizon | BEVERLYHLS | – | yes | yes |
| 310-493 | T-Mobile | CMTN GRDN | – | yes | yes |
| 310-494 | Lumen | MALIBU | – | yes | yes |
| 310-495 | 33 WIRELESS INC. | CULVERCITY | – | – | yes |
| 310-496 | Onvoy | SNMN SNMN | – | yes | yes |
| 310-497 | T-Mobile | BEVERLYHLS | – | yes | yes |
| 310-498 | AT&T | BEVERLYHLS | 2002-03-11 | yes | yes |
| 310-499 | Lumen | BEVERLYHLS | – | yes | yes |
| 310-500 | Lumen | W ANGELES | – | yes | yes |
| 310-501 | Spok | CMTN CMTN | – | – | yes |
| 310-502 | Verizon | CMTN GRDN | – | – | yes |
| 310-503 | AT&T | CMTN GRDN | 2001-04-19 | – | yes |
| 310-504 | Peerless | REDONDO | 2012-10-04 | yes | yes |
| 310-505 | T-Mobile | CMTN GRDN | – | yes | yes |
| 310-506 | TPx | MALIBU | – | yes | yes |
| 310-507 | Verizon | SAN PEDRO | – | yes | yes |
| 310-508 | Verizon | CMTN GRDN | – | – | yes |
| 310-509 | Spok | CMTN CMTN | – | – | yes |
| 310-510 | AT&T | AVALON | – | yes | yes |
| 310-512 | AT&T | CMTN GRDN | – | – | yes |
| 310-513 | AT&T | SAN PEDRO | – | yes | yes |
| 310-514 | AT&T | SAN PEDRO | – | yes | yes |
| 310-515 | AT&T | CMTN GRDN | – | – | yes |
| 310-516 | AT&T | CMTN GRDN | – | – | yes |
| 310-517 | AT&T | LOMITA | – | – | yes |
| 310-518 | AT&T | SAN PEDRO | – | – | yes |
| 310-519 | AT&T | SAN PEDRO | – | – | yes |
| 310-521 | AT&T | SAN PEDRO | – | – | yes |
| 310-522 | AT&T | SAN PEDRO | – | – | yes |
| 310-523 | AT&T | CMTN GRDN | – | – | yes |
| 310-524 | AT&T | EL SEGUNDO | – | – | yes |
| 310-525 | AT&T | CMTN GRDN | – | yes | yes |
| 310-526 | Verizon | SNMN SNMN | – | yes | yes |
| 310-527 | AT&T | CMTN GRDN | – | yes | yes |
| 310-528 | AT&T | CMTN GRDN | – | – | yes |
| 310-529 | AT&T | EL SEGUNDO | – | – | yes |
| 310-530 | AT&T | LOMITA | – | – | yes |
| 310-531 | AT&T | HAWTHORNE | – | yes | yes |
| 310-532 | AT&T | CMTN GRDN | – | – | yes |
| 310-533 | AT&T | TORRANCE | – | yes | yes |
| 310-534 | AT&T | LOMITA | – | – | yes |
| 310-535 | AT&T | EL SEGUNDO | – | – | yes |
| 310-536 | AT&T | HAWTHORNE | – | yes | yes |
| 310-537 | AT&T | CMTN CMTN | – | – | yes |
| 310-538 | AT&T | CMTN GRDN | – | – | yes |
| 310-539 | AT&T | LOMITA | – | – | yes |
| 310-540 | Frontier | REDONDO | – | – | yes |
| 310-541 | Frontier | REDONDO | – | – | yes |
| 310-542 | Frontier | REDONDO | – | – | yes |
| 310-543 | Frontier | REDONDO | – | – | yes |
| 310-544 | Frontier | REDONDO | – | – | yes |
| 310-545 | Frontier | REDONDO | – | – | yes |
| 310-546 | Frontier | REDONDO | – | – | yes |
| 310-547 | AT&T | SAN PEDRO | – | yes | yes |
| 310-548 | AT&T | SAN PEDRO | – | – | yes |
| 310-549 | AT&T | SAN PEDRO | – | – | yes |
| 310-550 | AT&T | BEVERLYHLS | – | – | yes |
| 310-551 | AT&T | BEVERLYHLS | – | – | yes |
| 310-552 | AT&T | BEVERLYHLS | – | – | yes |
| 310-553 | AT&T | BEVERLYHLS | – | – | yes |
| 310-554 | T-Mobile | CMTN CMTN | 2017-01-16 | yes | yes |
| 310-556 | AT&T | BEVERLYHLS | – | – | yes |
| 310-557 | AT&T | BEVERLYHLS | – | yes | yes |
| 310-558 | AT&T | CULVERCITY | – | yes | yes |
| 310-559 | AT&T | CULVERCITY | – | – | yes |
| 310-560 | Verizon | SNMN MRVS | – | – | yes |
| 310-561 | T-Mobile | TORRANCE | 2005-02-22 | yes | yes |
| 310-562 | AT&T | W ANGELES | 2001-04-17 | – | yes |
| 310-563 | AT&T | EL SEGUNDO | – | – | yes |
| 310-564 | Onvoy | SNMN SNMN | – | yes | yes |
| 310-565 | AT&T | EL SEGUNDO | 2020-08-28 | yes | yes |
| 310-566 | TPx | SNMN SNMN | – | – | yes |
| 310-567 | AT&T | CMTN GRDN | – | – | yes |
| 310-568 | AT&T | INGLEWOOD | – | – | yes |
| 310-569 | Verizon | SNMN MRVS | – | – | yes |
| 310-570 | Frontier | SNMN SNMN | – | yes | yes |
| 310-571 | Frontier | W ANGELES | – | yes | yes |
| 310-572 | Frontier | SNMN MRVS | – | – | yes |
| 310-573 | Frontier | SNMN SNMN | – | yes | yes |
| 310-574 | Frontier | SNMN MRVS | – | yes | yes |
| 310-575 | Frontier | W ANGELES | – | yes | yes |
| 310-576 | Frontier | SNMN SNMN | – | – | yes |
| 310-577 | Frontier | SNMN MRVS | – | – | yes |
| 310-578 | Frontier | SNMN MRVS | – | – | yes |
| 310-579 | Verizon | MALIBU | – | yes | yes |
| 310-580 | UTILITY TELECOM GROUP, LLC - CA | SNMN SNMN | – | – | yes |
| 310-581 | Frontier | SNMN SNMN | – | – | yes |
| 310-582 | Frontier | SNMN SNMN | – | yes | yes |
| 310-583 | 33 WIRELESS INC. | SNMN SNMN | – | – | yes |
| 310-584 | Frontier | SNMN SNMN | – | yes | yes |
| 310-585 | Spok | SNMN SNMN | – | – | yes |
| 310-586 | Frontier | SNMN SNMN | – | – | yes |
| 310-587 | Frontier | SNMN SNMN | – | – | yes |
| 310-588 | Spok | SNMN SNMN | – | – | yes |
| 310-589 | Frontier | MALIBU | – | yes | yes |
| 310-590 | T-Mobile | INGLEWOOD | – | yes | yes |
| 310-591 | Lumen | SNMN MRVS | – | yes | yes |
| 310-592 | AT&T | W ANGELES | – | – | yes |
| 310-593 | Verizon | SNMN SNMN | – | yes | yes |
| 310-594 | T-Mobile | CMTN GRDN | – | yes | yes |
| 310-595 | Verizon | BEVERLYHLS | – | yes | yes |
| 310-596 | Verizon | CULVERCITY | 2012-08-08 | yes | yes |
| 310-597 | Lumen | W ANGELES | – | yes | yes |
| 310-598 | AT&T | BEVERLYHLS | – | yes | yes |
| 310-599 | 33 WIRELESS INC. | CMTN CMTN | – | – | yes |
| 310-600 | AT&T | BEVERLYHLS | 2001-04-19 | – | yes |
| 310-601 | AT&T | BEVERLYHLS | – | yes | yes |
| 310-602 | Verizon | LOMITA | – | yes | yes |
| 310-603 | AT&T | CMTN CMTN | – | – | yes |
| 310-604 | AT&T | CMTN CMTN | – | – | yes |
| 310-605 | AT&T | CMTN CMTN | – | – | yes |
| 310-606 | AT&T | EL SEGUNDO | – | yes | yes |
| 310-607 | AT&T | EL SEGUNDO | – | – | yes |
| 310-608 | AT&T | CMTN CMTN | – | – | yes |
| 310-609 | AT&T | CMTN CMTN | – | – | yes |
| 310-610 | American Messaging | CMTN GRDN | – | – | yes |
| 310-612 | Verizon | CMTN GRDN | – | – | yes |
| 310-613 | Verizon | CMTN GRDN | – | – | yes |
| 310-614 | AT&T | BEVERLYHLS | 2001-04-19 | – | yes |
| 310-615 | AT&T | EL SEGUNDO | – | – | yes |
| 310-616 | AT&T | EL SEGUNDO | – | yes | yes |
| 310-617 | Verizon | CMTN GRDN | – | – | yes |
| 310-618 | AT&T | TORRANCE | – | yes | yes |
| 310-619 | T-Mobile | TORRANCE | – | yes | yes |
| 310-620 | INTEGRATED PATH COMMUNICATIONS, LLC - CA | BEVERLYHLS | 2017-03-08 | yes | yes |
| 310-621 | T-Mobile | CULVERCITY | – | yes | yes |
| 310-622 | Lumen | W ANGELES | – | yes | yes |
| 310-623 | TPx | BEVERLYHLS | – | yes | yes |
| 310-624 | American Messaging | BEVERLYHLS | – | – | yes |
| 310-625 | Verizon | SNMN MRVS | – | – | yes |
| 310-626 | Lumen | LOMITA | – | yes | yes |
| 310-627 | Peerless | CMTN CMTN | 2012-10-09 | yes | yes |
| 310-628 | T-Mobile | SNMN SNMN | – | yes | yes |
| 310-629 | T-Mobile | LAKEWOOD | – | yes | yes |
| 310-630 | AT&T | CMTN GRDN | – | yes | yes |
| 310-631 | AT&T | CMTN CMTN | – | – | yes |
| 310-632 | AT&T | CMTN CMTN | – | – | yes |
| 310-633 | AT&T | SNMN SNMN | – | yes | yes |
| 310-634 | T-Mobile | TORRANCE | – | yes | yes |
| 310-635 | AT&T | CMTN CMTN | – | – | yes |
| 310-636 | Frontier | SNMN MRVS | – | – | yes |
| 310-637 | AT&T | CMTN CMTN | – | – | yes |
| 310-638 | AT&T | CMTN CMTN | – | – | yes |
| 310-639 | AT&T | CMTN CMTN | – | – | yes |
| 310-640 | AT&T | EL SEGUNDO | – | – | yes |
| 310-641 | AT&T | INGLEWOOD | – | – | yes |
| 310-642 | AT&T | INGLEWOOD | – | yes | yes |
| 310-643 | AT&T | HAWTHORNE | – | – | yes |
| 310-644 | AT&T | HAWTHORNE | – | – | yes |
| 310-645 | AT&T | INGLEWOOD | – | – | yes |
| 310-646 | AT&T | INGLEWOOD | – | – | yes |
| 310-647 | AT&T | EL SEGUNDO | – | yes | yes |
| 310-648 | AT&T | EL SEGUNDO | – | yes | yes |
| 310-649 | AT&T | INGLEWOOD | – | – | yes |
| 310-650 | Verizon | CMTN GRDN | – | – | yes |
| 310-651 | Lumen | BEVERLYHLS | – | yes | yes |
| 310-652 | AT&T | BEVERLYHLS | – | – | yes |
| 310-653 | AT&T | EL SEGUNDO | 2005-02-23 | yes | yes |
| 310-654 | T-Mobile | INGLEWOOD | 2004-11-08 | yes | yes |
| 310-655 | American Messaging | W ANGELES | – | – | yes |
| 310-656 | Frontier | SNMN SNMN | – | – | yes |
| 310-657 | AT&T | BEVERLYHLS | – | – | yes |
| 310-658 | Lumen | EL SEGUNDO | – | yes | yes |
| 310-659 | AT&T | BEVERLYHLS | – | – | yes |
| 310-660 | AT&T | CMTN GRDN | – | yes | yes |
| 310-661 | AT&T | CMTN CMTN | – | yes | yes |
| 310-662 | AT&T | EL SEGUNDO | – | yes | yes |
| 310-663 | T-Mobile | SNMN SNMN | – | yes | yes |
| 310-664 | Frontier | SNMN SNMN | – | – | yes |
| 310-665 | AT&T | INGLEWOOD | – | – | yes |
| 310-666 | AT&T | BEVERLYHLS | – | – | yes |
| 310-667 | Lumen | CMTN CMTN | – | yes | yes |
| 310-668 | AT&T | CMTN CMTN | – | yes | yes |
| 310-669 | AT&T | CMTN CMTN | – | – | yes |
| 310-670 | AT&T | INGLEWOOD | – | – | yes |
| 310-671 | AT&T | INGLEWOOD | – | – | yes |
| 310-672 | AT&T | INGLEWOOD | – | – | yes |
| 310-673 | AT&T | INGLEWOOD | – | – | yes |
| 310-674 | AT&T | INGLEWOOD | – | – | yes |
| 310-675 | AT&T | HAWTHORNE | – | – | yes |
| 310-676 | AT&T | HAWTHORNE | – | – | yes |
| 310-677 | AT&T | INGLEWOOD | – | – | yes |
| 310-678 | T-Mobile | CMTN GRDN | – | yes | yes |
| 310-679 | AT&T | HAWTHORNE | – | – | yes |
| 310-680 | AT&T | INGLEWOOD | – | – | yes |
| 310-681 | American Messaging | CMTN GRDN | – | – | yes |
| 310-682 | AT&T | HAWTHORNE | 2017-07-03 | yes | yes |
| 310-683 | AT&T | REDONDO | – | yes | yes |
| 310-684 | T-Mobile | SAN PEDRO | – | yes | yes |
| 310-685 | Spok | CMTN GRDN | – | – | yes |
| 310-686 | T-Mobile | INGLEWOOD | – | yes | yes |
| 310-687 | AT&T | CMTN CMTN | – | – | yes |
| 310-688 | UTILITY TELECOM GROUP, LLC - CA | BEVERLYHLS | – | yes | yes |
| 310-689 | AT&T | W ANGELES | – | yes | yes |
| 310-690 | SHELCOMM | W ANGELES | 2001-06-26 | – | yes |
| 310-691 | Lumen | BEVERLYHLS | – | yes | yes |
| 310-692 | Lumen | INGLEWOOD | – | yes | yes |
| 310-693 | Verizon | INGLEWOOD | – | yes | yes |
| 310-694 | AT&T | W ANGELES | – | yes | yes |
| 310-695 | AT&T | INGLEWOOD | – | yes | yes |
| 310-696 | TPx | W ANGELES | – | yes | yes |
| 310-697 | Verizon | REDONDO | – | yes | yes |
| 310-698 | TPx | REDONDO | – | yes | yes |
| 310-699 | AT&T | SNMN SNMN | 2001-10-18 | – | yes |
| 310-701 | Verizon | CMTN GRDN | – | – | yes |
| 310-702 | Verizon | CMTN GRDN | – | – | yes |
| 310-703 | T-Mobile | INGLEWOOD | 2005-05-10 | yes | yes |
| 310-704 | T-Mobile | CMTN GRDN | – | yes | yes |
| 310-705 | UTILITY TELECOM GROUP, LLC - CA | CMTN CMTN | – | yes | yes |
| 310-706 | TPx | HAWTHORNE | – | yes | yes |
| 310-707 | TPx | SAN PEDRO | – | yes | yes |
| 310-708 | Onvoy | MALIBU | 2023-06-26 | yes | yes |
| 310-709 | T-Mobile | W ANGELES | – | yes | yes |
| 310-710 | Verizon | CMTN GRDN | – | – | yes |
| 310-712 | AT&T | BEVERLYHLS | – | – | yes |
| 310-713 | Verizon | CMTN GRDN | – | – | yes |
| 310-714 | T-Mobile | CMTN GRDN | – | yes | yes |
| 310-715 | AT&T | CMTN GRDN | – | yes | yes |
| 310-716 | Spok | CMTN GRDN | – | – | yes |
| 310-717 | AT&T | BEVERLYHLS | 2001-04-19 | – | yes |
| 310-718 | Spok | CMTN GRDN | – | – | yes |
| 310-719 | AT&T | CMTN GRDN | – | yes | yes |
| 310-720 | Verizon | CMTN GRDN | – | – | yes |
| 310-721 | AT&T | BEVERLYHLS | 2001-04-19 | – | yes |
| 310-722 | T-Mobile | CMTN GRDN | – | yes | yes |
| 310-723 | Spok | CMTN GRDN | – | – | yes |
| 310-724 | AT&T | BEVERLYHLS | – | – | yes |
| 310-725 | AT&T | HAWTHORNE | – | yes | yes |
| 310-726 | AT&T | EL SEGUNDO | – | – | yes |
| 310-727 | AT&T | HAWTHORNE | – | – | yes |
| 310-728 | Verizon | BEVERLYHLS | – | yes | yes |
| 310-729 | AT&T | BEVERLYHLS | 2001-04-19 | – | yes |
| 310-730 | Bandwidth | CULVERCITY | 2012-08-13 | yes | yes |
| 310-731 | Onvoy | SAN PEDRO | 2025-11-20 | yes | yes |
| 310-732 | AT&T | SAN PEDRO | – | – | yes |
| 310-733 | Lumen | CULVERCITY | – | yes | yes |
| 310-734 | Verizon | BEVERLYHLS | – | yes | yes |
| 310-735 | Verizon | CMTN CMTN | – | yes | yes |
| 310-736 | Verizon | CULVERCITY | – | yes | yes |
| 310-737 | Frontier | SNMN MRVS | – | yes | yes |
| 310-738 | Verizon | CMTN GRDN | – | – | yes |
| 310-739 | AT&T | BEVERLYHLS | 2001-04-19 | – | yes |
| 310-740 | Verizon | SNMN MRVS | – | yes | yes |
| 310-741 | Verizon | SNMN MRVS | – | yes | yes |
| 310-742 | Onvoy | CMTN CMTN | – | yes | yes |
| 310-743 | Verizon | INGLEWOOD | – | yes | yes |
| 310-744 | AT&T | EL SEGUNDO | – | yes | yes |
| 310-745 | AT&T | SNMN MRVS | – | yes | yes |
| 310-746 | TPx | BEVERLYHLS | – | yes | yes |
| 310-747 | TPx | CMTN CMTN | – | yes | yes |
| 310-748 | AT&T | CMTN GRDN | – | – | yes |
| 310-749 | Verizon | CMTN GRDN | – | – | yes |
| 310-750 | Verizon | REDONDO | – | yes | yes |
| 310-751 | Verizon | SNMN MRVS | – | yes | yes |
| 310-752 | Verizon | SNMN SNMN | – | yes | yes |
| 310-753 | AT&T | CMTN GRDN | – | – | yes |
| 310-754 | AT&T | SNMN MRVS | – | yes | yes |
| 310-755 | TPx | TORRANCE | – | yes | yes |
| 310-756 | Verizon | CMTN GRDN | – | yes | yes |
| 310-757 | T-Mobile | CMTN CMTN | 2024-02-14 | yes | yes |
| 310-758 | Onvoy | SAN PEDRO | 2023-06-26 | yes | yes |
| 310-759 | Onvoy | HAWTHORNE | 2023-06-26 | yes | yes |
| 310-760 | Verizon | EL SEGUNDO | – | yes | yes |
| 310-761 | AT&T | CMTN CMTN | – | – | yes |
| 310-762 | AT&T | CMTN CMTN | – | – | yes |
| 310-763 | AT&T | CMTN CMTN | – | – | yes |
| 310-764 | AT&T | CMTN CMTN | – | – | yes |
| 310-765 | Verizon | EL SEGUNDO | – | yes | yes |
| 310-766 | T-Mobile | CMTN GRDN | – | yes | yes |
| 310-767 | AT&T | CMTN GRDN | – | yes | yes |
| 310-768 | AT&T | CMTN GRDN | – | yes | yes |
| 310-769 | AT&T | CMTN GRDN | – | yes | yes |
| 310-770 | T-Mobile | BEVERLYHLS | – | yes | yes |
| 310-771 | AT&T | CMTN GRDN | – | – | yes |
| 310-772 | AT&T | BEVERLYHLS | – | – | yes |
| 310-773 | Lumen | SNMN MRVS | – | yes | yes |
| 310-774 | T-Mobile | MALIBU | – | yes | yes |
| 310-775 | Lumen | W ANGELES | 2005-12-29 | yes | yes |
| 310-776 | Verizon | SNMN MRVS | – | yes | yes |
| 310-777 | AT&T | BEVERLYHLS | – | yes | yes |
| 310-778 | UTILITY TELECOM GROUP, LLC - CA | CMTN GRDN | – | yes | yes |
| 310-779 | AT&T | BEVERLYHLS | 2001-04-19 | – | yes |
| 310-780 | Verizon | CMTN GRDN | – | – | yes |
| 310-781 | AT&T | TORRANCE | – | yes | yes |
| 310-782 | AT&T | TORRANCE | – | yes | yes |
| 310-783 | AT&T | TORRANCE | – | – | yes |
| 310-784 | AT&T | LOMITA | – | – | yes |
| 310-785 | AT&T | BEVERLYHLS | – | – | yes |
| 310-786 | AT&T | BEVERLYHLS | – | – | yes |
| 310-787 | AT&T | TORRANCE | – | – | yes |
| 310-788 | AT&T | BEVERLYHLS | – | – | yes |
| 310-789 | AT&T | BEVERLYHLS | – | – | yes |
| 310-790 | Spok | SNMN SNMN | – | – | yes |
| 310-791 | Frontier | REDONDO | – | – | yes |
| 310-792 | Frontier | REDONDO | – | – | yes |
| 310-793 | Frontier | REDONDO | – | yes | yes |
| 310-794 | Frontier | W ANGELES | – | – | yes |
| 310-795 | AT&T | SNMN SNMN | 2001-04-19 | – | yes |
| 310-796 | Frontier | REDONDO | – | yes | yes |
| 310-797 | American Messaging | EL SEGUNDO | – | – | yes |
| 310-798 | Frontier | REDONDO | – | – | yes |
| 310-799 | American Messaging | CULVERCITY | – | – | yes |
| 310-800 | Verizon | CMTN GRDN | – | yes | yes |
| 310-801 | AT&T | BEVERLYHLS | – | – | yes |
| 310-802 | Frontier | REDONDO | – | yes | yes |
| 310-803 | Lumen | TORRANCE | – | yes | yes |
| 310-804 | AT&T | SNMN SNMN | – | – | yes |
| 310-805 | Spok | CMTN GRDN | – | – | yes |
| 310-806 | TPx | W ANGELES | – | yes | yes |
| 310-807 | Onvoy | CMTN GRDN | – | yes | yes |
| 310-808 | AT&T | CMTN GRDN | – | yes | yes |
| 310-809 | T-Mobile | SAN PEDRO | – | yes | yes |
| 310-810 | Bandwidth | CMTN CMTN | 2020-10-13 | yes | yes |
| 310-812 | AT&T | HAWTHORNE | – | – | yes |
| 310-813 | AT&T | HAWTHORNE | – | – | yes |
| 310-814 | AT&T | HAWTHORNE | – | – | yes |
| 310-815 | AT&T | CULVERCITY | – | – | yes |
| 310-816 | AT&T | SAN PEDRO | – | – | yes |
| 310-817 | AT&T | CMTN GRDN | – | yes | yes |
| 310-818 | TPx | CMTN GRDN | – | yes | yes |
| 310-819 | Verizon | CMTN GRDN | – | yes | yes |
| 310-820 | Frontier | W ANGELES | – | – | yes |
| 310-821 | Frontier | SNMN MRVS | – | – | yes |
| 310-822 | Frontier | SNMN MRVS | – | – | yes |
| 310-823 | Frontier | SNMN MRVS | – | – | yes |
| 310-824 | Frontier | W ANGELES | – | yes | yes |
| 310-825 | Frontier | W ANGELES | – | – | yes |
| 310-826 | Frontier | W ANGELES | – | – | yes |
| 310-827 | Frontier | SNMN MRVS | – | – | yes |
| 310-828 | Frontier | SNMN SNMN | – | – | yes |
| 310-829 | Frontier | SNMN SNMN | – | – | yes |
| 310-830 | AT&T | SAN PEDRO | – | – | yes |
| 310-831 | AT&T | SAN PEDRO | – | – | yes |
| 310-832 | AT&T | SAN PEDRO | – | – | yes |
| 310-833 | AT&T | SAN PEDRO | – | – | yes |
| 310-834 | AT&T | SAN PEDRO | – | – | yes |
| 310-835 | AT&T | SAN PEDRO | – | – | yes |
| 310-836 | AT&T | CULVERCITY | – | – | yes |
| 310-837 | AT&T | CULVERCITY | – | – | yes |
| 310-838 | AT&T | CULVERCITY | – | – | yes |
| 310-839 | AT&T | CULVERCITY | – | – | yes |
| 310-840 | AT&T | CULVERCITY | – | – | yes |
| 310-841 | AT&T | CULVERCITY | – | – | yes |
| 310-842 | AT&T | CULVERCITY | – | – | yes |
| 310-843 | AT&T | BEVERLYHLS | – | – | yes |
| 310-844 | Verizon | HAWTHORNE | – | yes | yes |
| 310-845 | AT&T | CULVERCITY | – | yes | yes |
| 310-846 | Verizon | INGLEWOOD | – | yes | yes |
| 310-847 | AT&T | SAN PEDRO | – | yes | yes |
| 310-848 | Verizon | HAWTHORNE | 2005-09-08 | yes | yes |
| 310-849 | AT&T | BEVERLYHLS | – | – | yes |
| 310-850 | Verizon | CMTN GRDN | – | – | yes |
| 310-851 | AT&T | CMTN GRDN | – | – | yes |
| 310-852 | American Messaging | CMTN GRDN | – | – | yes |
| 310-853 | Bandwidth | CULVERCITY | 2010-12-10 | yes | yes |
| 310-854 | AT&T | BEVERLYHLS | – | yes | yes |
| 310-855 | AT&T | BEVERLYHLS | – | yes | yes |
| 310-856 | TPx | CMTN GRDN | – | yes | yes |
| 310-857 | TPx | SNMN SNMN | – | yes | yes |
| 310-858 | AT&T | BEVERLYHLS | – | – | yes |
| 310-859 | AT&T | BEVERLYHLS | – | – | yes |
| 310-860 | AT&T | BEVERLYHLS | – | yes | yes |
| 310-861 | Onvoy | BEVERLYHLS | – | – | yes |
| 310-862 | Verizon | SNMN MRVS | – | yes | yes |
| 310-863 | T-Mobile | REDONDO | – | yes | yes |
| 310-864 | T-Mobile | CMTN GRDN | – | yes | yes |
| 310-865 | AT&T | SNMN SNMN | – | – | yes |
| 310-866 | Frontier | SNMN SNMN | – | yes | yes |
| 310-867 | T-Mobile | BEVERLYHLS | – | yes | yes |
| 310-868 | Onvoy | CMTN CMTN | – | yes | yes |
| 310-869 | AT&T | W ANGELES | – | – | yes |
| 310-870 | Bandwidth | REDONDO | 2012-05-22 | yes | yes |
| 310-871 | AT&T | BEVERLYHLS | 2001-04-19 | – | yes |
| 310-872 | T-Mobile | SAN PEDRO | – | yes | yes |
| 310-873 | TPx | W ANGELES | – | yes | yes |
| 310-874 | AT&T | CMTN GRDN | 2001-04-19 | – | yes |
| 310-875 | Spok | SNMN SNMN | – | – | yes |
| 310-876 | T-Mobile | CULVERCITY | – | yes | yes |
| 310-877 | T-Mobile | SNMN SNMN | – | yes | yes |
| 310-878 | Lumen | CMTN GRDN | – | yes | yes |
| 310-879 | Bandwidth | CMTN GRDN | 2012-08-14 | yes | yes |
| 310-880 | AT&T | BEVERLYHLS | 2001-04-19 | – | yes |
| 310-881 | TPx | SNMN MRVS | – | yes | yes |
| 310-882 | Verizon | W ANGELES | – | yes | yes |
| 310-883 | TPx | SNMN SNMN | – | yes | yes |
| 310-884 | AT&T | CMTN CMTN | – | – | yes |
| 310-885 | AT&T | CMTN CMTN | – | – | yes |
| 310-886 | AT&T | CMTN CMTN | – | yes | yes |
| 310-887 | AT&T | BEVERLYHLS | – | – | yes |
| 310-888 | AT&T | BEVERLYHLS | – | – | yes |
| 310-889 | Frontier | W ANGELES | – | yes | yes |
| 310-890 | AT&T | BEVERLYHLS | 2001-04-19 | – | yes |
| 310-891 | AT&T | LOMITA | – | – | yes |
| 310-892 | Verizon | CMTN GRDN | – | yes | yes |
| 310-893 | Verizon | W ANGELES | – | yes | yes |
| 310-894 | Verizon | CMTN CMTN | – | yes | yes |
| 310-895 | Verizon | CULVERCITY | – | yes | yes |
| 310-896 | TPx | REDONDO | – | yes | yes |
| 310-897 | AT&T | CMTN GRDN | 2001-04-17 | – | yes |
| 310-898 | AT&T | CMTN CMTN | – | – | yes |
| 310-899 | Frontier | SNMN SNMN | – | – | yes |
| 310-900 | AT&T | CMTN CMTN | – | yes | yes |
| 310-901 | T-Mobile | TORRANCE | – | yes | yes |
| 310-902 | T-Mobile | SNMN MRVS | 2001-08-22 | yes | yes |
| 310-903 | Verizon | W ANGELES | – | yes | yes |
| 310-904 | TPx | CULVERCITY | – | yes | yes |
| 310-905 | Verizon | SNMN MRVS | 2013-01-14 | yes | yes |
| 310-906 | IP HORIZON LLC | EL SEGUNDO | – | yes | yes |
| 310-907 | Verizon | SNMN SNMN | – | yes | yes |
| 310-908 | AT&T | INGLEWOOD | – | – | yes |
| 310-909 | Verizon | W ANGELES | – | yes | yes |
| 310-910 | T-Mobile | INGLEWOOD | – | yes | yes |
| 310-912 | Verizon | INGLEWOOD | 2011-08-23 | yes | yes |
| 310-913 | Verizon | SNMN MRVS | – | yes | yes |
| 310-914 | Frontier | W ANGELES | – | – | yes |
| 310-915 | Frontier | SNMN MRVS | – | – | yes |
| 310-916 | Lumen | CULVERCITY | – | yes | yes |
| 310-917 | Frontier | SNMN SNMN | – | – | yes |
| 310-918 | AT&T | CMTN GRDN | – | – | yes |
| 310-919 | Onvoy | MALIBU | – | yes | yes |
| 310-920 | T-Mobile | CMTN GRDN | 2001-10-18 | – | yes |
| 310-921 | Frontier | REDONDO | – | yes | yes |
| 310-922 | Verizon | SNMN MRVS | – | – | yes |
| 310-923 | AT&T | W ANGELES | 2002-03-11 | yes | yes |
| 310-924 | T-Mobile | MALIBU | 2001-04-19 | yes | yes |
| 310-925 | T-Mobile | BEVERLYHLS | 2001-12-26 | yes | yes |
| 310-926 | AT&T | BEVERLYHLS | 2001-07-10 | yes | yes |
| 310-927 | T-Mobile | BEVERLYHLS | – | yes | yes |
| 310-928 | Verizon | CMTN CMTN | – | yes | yes |
| 310-929 | IP HORIZON LLC | AVALON | – | yes | yes |
| 310-930 | T-Mobile | CMTN GRDN | 2001-06-26 | yes | yes |
| 310-931 | American Messaging | TORRANCE | – | – | yes |
| 310-932 | Spok | LAKEWOOD | – | – | yes |
| 310-933 | Lumen | CMTN CMTN | – | yes | yes |
| 310-934 | American Messaging | CULVERCITY | – | – | yes |
| 310-935 | Onvoy | SAN PEDRO | 2011-02-22 | yes | yes |
| 310-936 | T-Mobile | CULVERCITY | 2001-02-28 | yes | yes |
| 310-937 | Frontier | REDONDO | – | – | yes |
| 310-938 | AT&T | TORRANCE | – | – | yes |
| 310-939 | Frontier | REDONDO | – | – | yes |
| 310-940 | AT&T | CMTN GRDN | 2001-08-22 | – | yes |
| 310-941 | AT&T | CMTN GRDN | 2001-07-10 | – | yes |
| 310-942 | 33 WIRELESS INC. | CMTN GRDN | 2002-04-15 | – | yes |
| 310-943 | Onvoy | W ANGELES | – | yes | yes |
| 310-944 | Frontier | REDONDO | – | yes | yes |
| 310-945 | Verizon | CULVERCITY | – | yes | yes |
| 310-946 | T-Mobile | INGLEWOOD | 2002-06-14 | yes | yes |
| 310-947 | T-Mobile | REDONDO | 2002-06-14 | yes | yes |
| 310-948 | AT&T | W ANGELES | 2002-07-29 | yes | yes |
| 310-949 | NORTH COUNTY COMMUNICATION CORPORATION - CA | AVALON | – | – | yes |
| 310-951 | T-Mobile | TORRANCE | 2002-08-21 | – | yes |
| 310-952 | AT&T | SAN PEDRO | – | – | yes |
| 310-953 | Verizon | TORRANCE | – | yes | yes |
| 310-954 | Verizon | W ANGELES | – | yes | yes |
| 310-955 | Verizon | EL SEGUNDO | – | yes | yes |
| 310-956 | Verizon | HAWTHORNE | – | yes | yes |
| 310-957 | Verizon | INGLEWOOD | – | yes | yes |
| 310-960 | Spok | CMTN GRDN | – | – | yes |
| 310-961 | Verizon | TORRANCE | 2005-08-03 | yes | yes |
| 310-962 | AT&T | BEVERLYHLS | 2001-04-19 | – | yes |
| 310-963 | Verizon | SNMN MRVS | – | – | yes |
| 310-964 | AT&T | EL SEGUNDO | – | – | yes |
| 310-965 | AT&T | CMTN GRDN | – | yes | yes |
| 310-966 | Frontier | W ANGELES | – | yes | yes |
| 310-967 | AT&T | BEVERLYHLS | – | yes | yes |
| 310-968 | Verizon | SNMN MRVS | – | – | yes |
| 310-969 | AT&T | BEVERLYHLS | – | – | yes |
| 310-970 | AT&T | HAWTHORNE | – | yes | yes |
| 310-971 | Verizon | SAN PEDRO | – | yes | yes |
| 310-972 | AT&T | TORRANCE | – | yes | yes |
| 310-973 | AT&T | HAWTHORNE | – | – | yes |
| 310-974 | Verizon | TORRANCE | – | yes | yes |
| 310-975 | Verizon | BEVERLYHLS | – | yes | yes |
| 310-976 | NORTH COUNTY COMMUNICATION CORPORATION - CA | BEVERLYHLS | 2011-06-08 | – | yes |
| 310-977 | AT&T | CMTN GRDN | 2001-04-19 | – | yes |
| 310-978 | AT&T | HAWTHORNE | – | yes | yes |
| 310-979 | Frontier | W ANGELES | – | – | yes |
| 310-980 | T-Mobile | SNMN SNMN | 2002-02-21 | – | yes |
| 310-981 | AT&T | INGLEWOOD | – | yes | yes |
| 310-982 | T-Mobile | SAN PEDRO | 2005-08-30 | yes | yes |
| 310-983 | AT&T | W ANGELES | – | yes | yes |
| 310-984 | Lumen | SAN PEDRO | 2004-11-17 | yes | yes |
| 310-985 | T-Mobile | SNMN SNMN | 2002-10-17 | yes | yes |
| 310-986 | T-Mobile | LOMITA | 2005-01-03 | yes | yes |
| 310-987 | T-Mobile | SAN PEDRO | 2005-02-14 | yes | yes |
| 310-988 | Verizon | INGLEWOOD | 2005-09-08 | yes | yes |
| 310-989 | AT&T | CMTN GRDN | – | – | yes |
| 310-990 | AT&T | BEVERLYHLS | 2001-04-19 | – | yes |
| 310-991 | Verizon | CMTN GRDN | – | – | yes |
| 310-992 | Spok | SNMN SNMN | – | – | yes |
| 310-993 | AT&T | BEVERLYHLS | 2001-04-19 | – | yes |
| 310-994 | AT&T | BEVERLYHLS | 2001-04-19 | – | yes |
| 310-995 | Verizon | CMTN GRDN | – | – | yes |
| 310-996 | Frontier | W ANGELES | – | – | yes |
| 310-997 | Verizon | LOMITA | – | yes | yes |
| 310-998 | Frontier | SNMN SNMN | – | yes | yes |
| 310-999 | T-Mobile | CMTN GRDN | – | yes | yes |
Frequently asked
How many prefixes does area code 310 have?
786 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 7,860 thousand-number ranges across 17 rate centers.
What do the first three digits after 310 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 310 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 310 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 354 of 310'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.
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