All assignees
800 prefixes in 310 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 310-400 | CMTN GRDN | 6529 | — | Yes |
| 310-401 | SNMN SNMN | 8826 | — | Yes |
| 310-402 | BEVERLYHLS | 8826 | — | Yes |
| 310-403 | SNMN SNMN | 899D | — | Yes |
| 310-404 | CMTN GRDN | 6529 | — | Yes |
| 310-405 | W ANGELES | 6006 | — | Yes |
| 310-406 | REDONDO | 2319 | — | Yes |
| 310-407 | BEVERLYHLS | 9740 | — | Yes |
| 310-408 | TORRANCE | 6010 | — | — |
| 310-409 | BEVERLYHLS | 515J | — | Yes |
| 310-410 | INGLEWOOD | 9740 | — | — |
| 310-411 | XXXXXXXXXX | MULT | — | — |
| 310-412 | INGLEWOOD | 9740 | — | — |
| 310-413 | CMTN GRDN | 6006 | — | — |
| 310-414 | EL SEGUNDO | 9740 | — | Yes |
| 310-415 | CMTN GRDN | 6006 | — | — |
| 310-416 | EL SEGUNDO | 9740 | — | — |
| 310-417 | INGLEWOOD | 9740 | — | Yes |
| 310-418 | CMTN GRDN | 6010 | 2001-04-19 | — |
| 310-419 | INGLEWOOD | 9740 | — | — |
| 310-420 | SNMN SNMN | 899D | — | Yes |
| 310-421 | REDONDO | 6529 | — | Yes |
| 310-422 | SNMN MRVS | 6006 | — | — |
| 310-423 | BEVERLYHLS | 9740 | — | — |
| 310-424 | BEVERLYHLS | 829J | 2006-02-02 | Yes |
| 310-425 | CULVERCITY | 7229 | 2005-09-29 | Yes |
| 310-426 | EL SEGUNDO | 9740 | — | Yes |
| 310-427 | SAN PEDRO | 6006 | — | Yes |
| 310-428 | SNMN SNMN | 899D | — | Yes |
| 310-429 | SNMN MRVS | 6006 | — | — |
| 310-430 | SNMN SNMN | 6529 | 2002-09-06 | Yes |
| 310-431 | INGLEWOOD | 6010 | — | Yes |
| 310-432 | BEVERLYHLS | 671J | — | Yes |
| 310-433 | SNMN MRVS | 6006 | — | — |
| 310-434 | SNMN SNMN | 2319 | — | — |
| 310-435 | BEVERLYHLS | 6010 | — | — |
| 310-436 | CMTN GRDN | 671J | — | Yes |
| 310-437 | SNMN MRVS | 7229 | — | Yes |
| 310-438 | CMTN CMTN | 6529 | — | Yes |
| 310-439 | SNMN MRVS | 2319 | — | Yes |
| 310-440 | W ANGELES | 2319 | — | — |
| 310-441 | W ANGELES | 2319 | — | — |
| 310-442 | W ANGELES | 2319 | — | — |
| 310-443 | W ANGELES | 2319 | — | — |
| 310-444 | W ANGELES | 2319 | — | — |
| 310-445 | W ANGELES | 2319 | — | — |
| 310-446 | W ANGELES | 2319 | — | — |
| 310-447 | W ANGELES | 2319 | — | Yes |
| 310-448 | SNMN MRVS | 2319 | — | Yes |
| 310-449 | SNMN SNMN | 2319 | — | — |
| 310-450 | SNMN SNMN | 2319 | — | — |
| 310-451 | SNMN SNMN | 2319 | — | — |
| 310-452 | SNMN SNMN | 2319 | — | — |
| 310-453 | SNMN SNMN | 2319 | — | — |
| 310-454 | SNMN SNMN | 2319 | — | — |
| 310-455 | SNMN SNMN | 2319 | — | Yes |
| 310-456 | MALIBU | 2319 | — | Yes |
| 310-457 | MALIBU | 2319 | — | — |
| 310-458 | SNMN SNMN | 2319 | — | — |
| 310-459 | SNMN SNMN | 2319 | — | — |
| 310-460 | SNMN SNMN | 7229 | — | Yes |
| 310-461 | BEVERLYHLS | 671J | — | Yes |
| 310-462 | INGLEWOOD | 6529 | 2002-02-22 | Yes |
| 310-463 | SNMN SNMN | 6010 | — | — |
| 310-464 | CMTN GRDN | 8826 | — | Yes |
| 310-465 | REDONDO | 2319 | — | Yes |
| 310-466 | SNMN SNMN | 899D | — | Yes |
| 310-467 | BEVERLYHLS | 6010 | 2001-04-17 | Yes |
| 310-468 | TORRANCE | 9740 | — | — |
| 310-469 | EL SEGUNDO | 8826 | — | Yes |
| 310-470 | W ANGELES | 2319 | — | — |
| 310-471 | W ANGELES | 2319 | — | — |
| 310-472 | W ANGELES | 2319 | — | — |
| 310-473 | W ANGELES | 2319 | — | — |
| 310-474 | W ANGELES | 2319 | — | — |
| 310-475 | W ANGELES | 2319 | — | — |
| 310-476 | W ANGELES | 2319 | — | — |
| 310-477 | W ANGELES | 2319 | — | — |
| 310-478 | W ANGELES | 2319 | — | — |
| 310-479 | W ANGELES | 2319 | — | — |
| 310-480 | CMTN GRDN | 6010 | 2001-04-19 | — |
| 310-481 | W ANGELES | 7480 | — | — |
| 310-482 | SNMN MRVS | 7480 | — | Yes |
| 310-483 | TORRANCE | 8826 | 2001-05-03 | Yes |
| 310-484 | INGLEWOOD | 671J | — | Yes |
| 310-485 | CULVERCITY | 6967 | — | — |
| 310-486 | SNMN MRVS | 6006 | — | — |
| 310-487 | SNMN MRVS | 6006 | — | — |
| 310-488 | SNMN MRVS | 6006 | — | — |
| 310-489 | CMTN GRDN | 6010 | 2001-04-19 | — |
| 310-490 | SNMN MRVS | 6006 | — | — |
| 310-491 | INGLEWOOD | 8826 | — | Yes |
| 310-492 | BEVERLYHLS | 7229 | — | Yes |
| 310-493 | CMTN GRDN | 6529 | — | Yes |
| 310-494 | MALIBU | 8826 | — | Yes |
| 310-495 | CULVERCITY | 6967 | — | — |
| 310-496 | SNMN SNMN | 649C | — | Yes |
| 310-497 | BEVERLYHLS | 6529 | — | Yes |
| 310-498 | BEVERLYHLS | 6010 | 2002-03-11 | Yes |
| 310-499 | BEVERLYHLS | 8826 | — | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.