All assignees
577 prefixes in 858 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 858-522 | SNDG LVTA | 9740 | — | Yes |
| 858-523 | DEL MAR | 9740 | — | Yes |
| 858-524 | RNCHOBRNDO | 9740 | — | Yes |
| 858-525 | LA JOLLA | 9740 | — | Yes |
| 858-526 | LA JOLLA | 9740 | — | Yes |
| 858-527 | SNDG MRMS | 9740 | — | Yes |
| 858-529 | LA JOLLA | 649C | — | Yes |
| 858-530 | SNDG MRMS | 9740 | — | Yes |
| 858-531 | LA JOLLA | 6010 | 2001-06-18 | — |
| 858-533 | HARBSNALPN | 965H | 2021-11-30 | Yes |
| 858-534 | LA JOLLA | 9740 | — | — |
| 858-535 | LA JOLLA | 9740 | — | — |
| 858-536 | SNDG MRMS | 9740 | — | Yes |
| 858-537 | SNDG MRMS | 9740 | — | Yes |
| 858-538 | RNCHOPNQTS | 9740 | — | — |
| 858-539 | LA JOLLA | 9740 | — | Yes |
| 858-541 | SNDG LVTA | 9740 | — | Yes |
| 858-544 | RNCHOBRNDO | 965H | 2021-09-24 | Yes |
| 858-546 | LA JOLLA | 9740 | — | — |
| 858-547 | SNDG MRMS | 9740 | — | — |
| 858-549 | SNDG MRMS | 9740 | — | — |
| 858-550 | LA JOLLA | 9740 | — | — |
| 858-551 | LA JOLLA | 9740 | — | — |
| 858-552 | LA JOLLA | 9740 | — | Yes |
| 858-554 | LA JOLLA | 9740 | — | — |
| 858-555 | DIR ASST | MULT | — | — |
| 858-558 | LA JOLLA | 9740 | — | — |
| 858-560 | SNDG LVTA | 9740 | — | — |
| 858-564 | SNDG MRMS | 671J | — | Yes |
| 858-565 | SNDG LVTA | 9740 | — | — |
| 858-566 | SNDG MRMS | 9740 | — | — |
| 858-567 | LA JOLLA | 965H | 2021-04-22 | Yes |
| 858-568 | LA JOLLA | 6010 | 2006-08-09 | Yes |
| 858-569 | SNDG LVTA | 9740 | — | — |
| 858-570 | SNDG LVTA | 9740 | — | — |
| 858-571 | SNDG LVTA | 9740 | — | — |
| 858-573 | SNDG LVTA | 9740 | — | — |
| 858-576 | SNDG LVTA | 9740 | — | — |
| 858-577 | SNDG MRMS | 9740 | — | — |
| 858-578 | SNDG MRMS | 9740 | — | — |
| 858-581 | LA JOLLA | 9740 | — | — |
| 858-583 | SNDG LVTA | 6529 | 2001-09-24 | Yes |
| 858-585 | LA MESA | 965H | 2019-03-19 | Yes |
| 858-586 | SNDG MRMS | 9740 | — | Yes |
| 858-587 | LA JOLLA | 9740 | — | — |
| 858-588 | RNCHOBRNDO | 965H | 2021-01-13 | Yes |
| 858-592 | RNCHOBRNDO | 9740 | — | — |
| 858-597 | LA JOLLA | 9740 | — | — |
| 858-598 | SNDG LVTA | 7147 | — | Yes |
| 858-599 | NATIONALCY | 965H | 2020-07-10 | Yes |
| 858-600 | SNDG SNDG | 114J | 2026-03-10 | Yes |
| 858-602 | POWAY | 6529 | 2002-04-01 | Yes |
| 858-603 | RNCHOPNQTS | 6010 | — | — |
| 858-605 | RNCHOBRNDO | 829J | — | Yes |
| 858-609 | SNDG LVTA | 7240 | — | Yes |
| 858-610 | SNDG MRMS | 6529 | 2002-08-30 | Yes |
| 858-611 | XXXXXXXXXX | MULT | — | — |
| 858-613 | RNCHOBRNDO | 9740 | — | — |
| 858-614 | SNDG LVTA | 9740 | — | Yes |
| 858-616 | SNDG LVTA | 9740 | — | Yes |
| 858-617 | DEL MAR | 7718 | — | Yes |
| 858-618 | RNCHOBRNDO | 9740 | — | — |
| 858-621 | SNDG MRMS | 9740 | — | Yes |
| 858-622 | LA JOLLA | 9740 | — | — |
| 858-623 | LA JOLLA | 9740 | — | — |
| 858-625 | LA JOLLA | 9740 | — | Yes |
| 858-626 | LA JOLLA | 9740 | — | — |
| 858-627 | SNDG LVTA | 9740 | — | — |
| 858-630 | SNDG MRMS | 7379 | — | Yes |
| 858-633 | SNDG LVTA | 7421 | — | Yes |
| 858-634 | SNDG LVTA | 394L | — | Yes |
| 858-635 | SNDG MRMS | 9740 | — | Yes |
| 858-636 | SNDG LVTA | 9740 | — | Yes |
| 858-637 | SNDG LVTA | 9740 | — | Yes |
| 858-638 | LA JOLLA | 9740 | — | — |
| 858-642 | LA JOLLA | 9740 | — | Yes |
| 858-643 | LA JOLLA | 9740 | — | — |
| 858-644 | SNDG MRMS | 965H | 2021-09-23 | Yes |
| 858-646 | LA JOLLA | 9740 | — | — |
| 858-648 | POWAY | 114J | 2018-02-23 | Yes |
| 858-649 | RNCHOBRNDO | 7718 | — | Yes |
| 858-650 | SNDG LVTA | 9740 | — | Yes |
| 858-651 | LA JOLLA | 7718 | — | — |
| 858-652 | LA JOLLA | 6529 | 2006-09-21 | Yes |
| 858-653 | SNDG MRMS | 9740 | — | Yes |
| 858-654 | SNDG LVTA | 9740 | — | Yes |
| 858-655 | RNCHOBRNDO | 9740 | — | — |
| 858-657 | LA JOLLA | 9740 | — | — |
| 858-658 | LA JOLLA | 9740 | — | — |
| 858-663 | POWAY | 6529 | — | Yes |
| 858-665 | LA JOLLA | 516J | 2022-01-19 | Yes |
| 858-666 | LA JOLLA | 649C | — | Yes |
| 858-667 | SNDG LVTA | 965H | 2020-11-09 | Yes |
| 858-668 | POWAY | 9740 | — | Yes |
| 858-672 | RNCHOPNQTS | 9740 | — | Yes |
| 858-673 | RNCHOBRNDO | 9740 | — | — |
| 858-674 | RNCHOBRNDO | 9740 | — | — |
| 858-675 | RNCHOBRNDO | 9740 | — | — |
| 858-676 | RNCHOBRNDO | 9740 | — | — |
| 858-677 | LA JOLLA | 9740 | — | — |
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.