All assignees
577 prefixes in 858 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 858-400 | RNCHOSANFE | 671J | — | Yes |
| 858-401 | LA JOLLA | 7147 | 2004-03-08 | Yes |
| 858-402 | LA JOLLA | 6010 | 2024-02-20 | Yes |
| 858-403 | POWAY | 6010 | 2024-06-17 | Yes |
| 858-404 | LA JOLLA | 9740 | — | Yes |
| 858-405 | LA JOLLA | 6529 | 2001-12-14 | — |
| 858-406 | LA JOLLA | 6010 | 2024-07-23 | Yes |
| 858-407 | CHULAVISTA | 6529 | 2024-08-30 | Yes |
| 858-408 | SNDG MRMS | 7240 | — | Yes |
| 858-409 | LA JOLLA | 6010 | 2024-09-17 | Yes |
| 858-410 | LA JOLLA | 7240 | — | — |
| 858-411 | XXXXXXXXXX | MULT | — | — |
| 858-412 | LA JOLLA | 793K | 2006-09-22 | Yes |
| 858-413 | POWAY | 671J | — | Yes |
| 858-414 | SNDG MRMS | 6006 | 2002-05-17 | — |
| 858-415 | SNDG SNDG | 6529 | 2024-09-19 | Yes |
| 858-416 | LA MESA | 6010 | 2024-10-24 | Yes |
| 858-417 | NATIONALCY | 6010 | 2024-11-12 | Yes |
| 858-418 | SNDG SNDG | 6010 | 2024-11-13 | Yes |
| 858-419 | SNDG SNDG | 478J | 2024-11-13 | Yes |
| 858-420 | SNDG LVTA | 6010 | 2024-11-21 | Yes |
| 858-421 | RNCHOBRNDO | 6010 | 2025-01-13 | Yes |
| 858-422 | CORONADO | 965H | 2021-09-23 | Yes |
| 858-423 | SNDG SNDG | 6006 | 2025-01-24 | Yes |
| 858-424 | EL CAJON | 649C | 2023-03-20 | Yes |
| 858-425 | SNDG SNDG | 624H | 2025-01-28 | Yes |
| 858-426 | EL CAJON | 649C | 2025-04-08 | Yes |
| 858-427 | SNDG LVTA | 829J | — | Yes |
| 858-428 | RNCHOPNQTS | 7379 | — | Yes |
| 858-429 | SNDG LVTA | 8826 | — | Yes |
| 858-430 | SNDG LVTA | 7240 | — | Yes |
| 858-431 | LA JOLLA | 7421 | — | Yes |
| 858-432 | RNCHOBRNDO | 671J | — | Yes |
| 858-433 | SNDG MRMS | 829J | — | Yes |
| 858-434 | RNCHOPNQTS | 7240 | — | Yes |
| 858-435 | POWAY | 829J | — | Yes |
| 858-436 | DEL MAR | 671J | — | Yes |
| 858-437 | SNDG MRMS | 9740 | — | Yes |
| 858-438 | CHULAVISTA | 649C | 2022-10-06 | Yes |
| 858-439 | CHULAVISTA | 6010 | 2025-06-11 | Yes |
| 858-440 | LA MESA | 6010 | 2025-08-22 | Yes |
| 858-441 | EL CAJON | 649C | 2025-10-16 | Yes |
| 858-442 | POWAY | 6006 | — | — |
| 858-443 | CHULAVISTA | 6529 | 2025-10-21 | Yes |
| 858-444 | SNDG MRMS | 671J | — | Yes |
| 858-445 | SNDG MRMS | 6529 | 2025-11-28 | Yes |
| 858-446 | SNDG SNDG | 0051 | 2026-05-13 | — |
| 858-447 | RNCHOPNQTS | 649C | 2026-05-21 | Yes |
| 858-448 | CORONADO | 6010 | 2026-07-23 | Yes |
| 858-449 | POWAY | 6006 | — | — |
| 858-450 | LA JOLLA | 9740 | — | — |
| 858-451 | RNCHOBRNDO | 9740 | — | Yes |
| 858-452 | LA JOLLA | 9740 | — | — |
| 858-453 | LA JOLLA | 9740 | — | — |
| 858-454 | LA JOLLA | 9740 | — | — |
| 858-455 | LA JOLLA | 9740 | — | — |
| 858-456 | LA JOLLA | 9740 | — | — |
| 858-457 | LA JOLLA | 9740 | — | — |
| 858-458 | LA JOLLA | 9740 | — | — |
| 858-459 | LA JOLLA | 9740 | — | — |
| 858-460 | EL CAJON | 649C | 2026-07-30 | Yes |
| 858-461 | DEL MAR | 8826 | 2006-01-06 | Yes |
| 858-462 | NATIONALCY | 516J | 2022-01-11 | Yes |
| 858-463 | CHULAVISTA | 516J | 2022-01-11 | Yes |
| 858-464 | CHULAVISTA | 649C | 2026-08-07 | Yes |
| 858-465 | DEL MAR | 8826 | 2013-03-29 | Yes |
| 858-466 | LA MESA | 965H | 2021-03-16 | Yes |
| 858-467 | SNDG LVTA | 9740 | — | — |
| 858-468 | SNDG MRMS | 649C | 2026-08-07 | Yes |
| 858-469 | HARBSNALPN | 649C | 2026-09-14 | Yes |
| 858-471 | SNDG MRMS | 6006 | 2018-03-06 | Yes |
| 858-472 | RNCHOBRNDO | 6006 | 2001-09-13 | Yes |
| 858-477 | SNDG SNDG | 965H | 2021-06-04 | Yes |
| 858-480 | DEL MAR | 7718 | — | Yes |
| 858-481 | DEL MAR | 9740 | — | — |
| 858-483 | LA JOLLA | 9740 | — | — |
| 858-484 | RNCHOPNQTS | 9740 | — | — |
| 858-485 | RNCHOBRNDO | 9740 | — | — |
| 858-486 | POWAY | 9740 | — | — |
| 858-487 | RNCHOBRNDO | 9740 | — | — |
| 858-488 | LA JOLLA | 9740 | — | — |
| 858-490 | LA JOLLA | 9740 | — | — |
| 858-492 | SNDG LVTA | 9740 | — | Yes |
| 858-493 | SNDG LVTA | 9748 | — | — |
| 858-494 | SNDG LVTA | 9748 | — | — |
| 858-495 | SNDG LVTA | 9740 | — | — |
| 858-496 | SNDG LVTA | 9740 | — | Yes |
| 858-499 | SNDG LVTA | 9740 | — | Yes |
| 858-500 | LA JOLLA | 649C | — | Yes |
| 858-502 | SNDG LVTA | 9740 | — | Yes |
| 858-503 | SNDG LVTA | 9740 | — | Yes |
| 858-504 | RNCHOSANFE | 6529 | 2002-08-30 | Yes |
| 858-505 | SNDG LVTA | 9740 | — | — |
| 858-509 | DEL MAR | 9740 | — | — |
| 858-511 | XXXXXXXXXX | MULT | — | — |
| 858-513 | POWAY | 9740 | — | — |
| 858-514 | SNDG LVTA | 9740 | — | — |
| 858-518 | LA JOLLA | 6529 | — | Yes |
| 858-519 | DEL MAR | 671J | — | Yes |
| 858-521 | RNCHOBRNDO | 9740 | — | 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.