All assignees
800 prefixes in 323 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 323-500 | MONTEBELLO | 8826 | — | Yes |
| 323-501 | MONTEBELLO | 899D | 2007-06-07 | Yes |
| 323-502 | LSAN DA 09 | 6630 | — | — |
| 323-503 | LSAN DA 02 | 515J | — | Yes |
| 323-504 | LSAN DA 14 | 6529 | — | Yes |
| 323-505 | LSAN DA 04 | 671J | — | Yes |
| 323-506 | MONTEBELLO | 899D | 2007-06-07 | Yes |
| 323-507 | LSAN DA 03 | 373F | — | Yes |
| 323-508 | LSAN DA 12 | 671J | — | Yes |
| 323-509 | LSAN DA 03 | 6529 | — | Yes |
| 323-510 | LSAN DA 05 | 8826 | — | Yes |
| 323-511 | XXXXXXXXXX | MULT | — | — |
| 323-512 | LSAN DA 14 | 9740 | — | Yes |
| 323-513 | LSAN DA 06 | 7240 | 2001-05-10 | Yes |
| 323-514 | MONTEBELLO | 899D | 2001-04-23 | Yes |
| 323-515 | LSAN DA 08 | 8826 | — | Yes |
| 323-516 | MONTEBELLO | 6006 | — | Yes |
| 323-517 | MONTEBELLO | 829J | — | Yes |
| 323-518 | LSAN DA 05 | 8826 | 2001-05-03 | Yes |
| 323-519 | MONTEBELLO | 6529 | 2007-07-03 | Yes |
| 323-520 | LSAN DA 14 | 9740 | — | — |
| 323-521 | LSAN DA 08 | 9740 | — | Yes |
| 323-522 | LSAN DA 02 | 671J | — | Yes |
| 323-523 | LSAN DA 06 | 671J | — | Yes |
| 323-524 | LSAN DA 08 | 7240 | 2001-05-10 | Yes |
| 323-525 | LSAN DA 13 | 9740 | — | — |
| 323-526 | LSAN DA 05 | 9740 | — | Yes |
| 323-527 | LSAN DA 09 | 7240 | 2001-05-10 | Yes |
| 323-528 | LSAN DA 09 | 6010 | — | — |
| 323-529 | LSAN DA 11 | 7240 | 2001-05-10 | Yes |
| 323-530 | MONTEBELLO | 6529 | 2016-07-22 | Yes |
| 323-531 | LSAN DA 09 | 793K | 2013-02-14 | Yes |
| 323-532 | LSAN DA 03 | 6529 | 2007-07-03 | Yes |
| 323-533 | LSAN DA 14 | 6006 | — | — |
| 323-534 | LSAN DA 13 | 899D | 2009-12-31 | Yes |
| 323-535 | LSAN DA 02 | 671J | — | Yes |
| 323-536 | LSAN DA 14 | 793K | 2013-06-13 | Yes |
| 323-537 | LSAN DA 06 | 6006 | 2003-07-16 | Yes |
| 323-538 | LSAN DA 06 | 981E | 2013-02-11 | Yes |
| 323-539 | LSAN DA 04 | 9740 | — | Yes |
| 323-540 | LSAN DA 03 | 6529 | — | Yes |
| 323-541 | LSAN DA 09 | 9740 | — | Yes |
| 323-542 | LSAN DA 03 | 6529 | 2007-08-29 | Yes |
| 323-543 | LSAN DA 03 | 671J | — | Yes |
| 323-544 | LSAN DA 08 | 7229 | — | Yes |
| 323-545 | LSAN DA 12 | 9740 | — | Yes |
| 323-546 | LSAN DA 08 | 7718 | — | Yes |
| 323-547 | LSAN DA 09 | 6010 | — | — |
| 323-548 | MONTEBELLO | 899D | 2014-09-22 | Yes |
| 323-549 | LSAN DA 13 | 9740 | — | Yes |
| 323-550 | LSAN DA 03 | 9740 | — | — |
| 323-551 | LSAN DA 03 | 9740 | — | Yes |
| 323-552 | LSAN DA 09 | 7229 | — | Yes |
| 323-553 | LSAN DA 06 | 981E | 2014-07-25 | Yes |
| 323-554 | LSAN DA 06 | 0051 | 2002-07-17 | — |
| 323-555 | DIR ASST | MULT | — | — |
| 323-556 | LSAN DA 13 | 671J | — | Yes |
| 323-557 | LSAN DA 13 | 7718 | — | Yes |
| 323-558 | MONTEBELLO | 671J | — | Yes |
| 323-559 | LSAN DA 06 | 6006 | — | — |
| 323-560 | LSAN DA 06 | 9740 | — | — |
| 323-561 | LSAN DA 03 | 6529 | 2015-02-03 | Yes |
| 323-562 | LSAN DA 06 | 9740 | — | — |
| 323-563 | LSAN DA 06 | 9740 | — | — |
| 323-564 | LSAN DA 06 | 9740 | — | — |
| 323-565 | LSAN DA 09 | 9740 | — | — |
| 323-566 | LSAN DA 06 | 9740 | — | — |
| 323-567 | LSAN DA 06 | 9740 | — | — |
| 323-568 | LSAN DA 06 | 9740 | — | Yes |
| 323-569 | LSAN DA 06 | 9740 | — | — |
| 323-570 | LSAN DA 09 | 6529 | 2006-09-21 | Yes |
| 323-571 | LSAN DA 13 | 899D | — | Yes |
| 323-572 | LSAN DA 14 | 899D | — | Yes |
| 323-573 | LSAN DA 14 | 6006 | — | — |
| 323-574 | LSAN DA 14 | 6006 | — | — |
| 323-575 | LSAN DA 13 | 9740 | — | — |
| 323-576 | LSAN DA 04 | 649C | — | Yes |
| 323-577 | LSAN DA 04 | 7718 | — | Yes |
| 323-578 | LSAN DA 14 | 6010 | — | — |
| 323-579 | LSAN DA 02 | 981E | — | Yes |
| 323-580 | LSAN DA 14 | 8826 | — | Yes |
| 323-581 | LSAN DA 06 | 9740 | — | — |
| 323-582 | LSAN DA 06 | 9740 | — | — |
| 323-583 | LSAN DA 06 | 9740 | — | — |
| 323-584 | LSAN DA 06 | 9740 | — | — |
| 323-585 | LSAN DA 06 | 9740 | — | — |
| 323-586 | LSAN DA 06 | 9740 | — | — |
| 323-587 | LSAN DA 06 | 9740 | — | — |
| 323-588 | LSAN DA 06 | 9740 | — | — |
| 323-589 | LSAN DA 06 | 9740 | — | — |
| 323-590 | LSAN DA 14 | 899D | 2007-08-29 | Yes |
| 323-591 | LSAN DA 13 | 793K | 2013-03-05 | Yes |
| 323-592 | LSAN DA 13 | 899D | 2009-07-06 | Yes |
| 323-593 | LSAN DA 02 | 899D | 2014-12-08 | Yes |
| 323-594 | MONTEBELLO | 6010 | 2007-08-29 | Yes |
| 323-595 | LSAN DA 13 | 899D | 2001-09-19 | Yes |
| 323-596 | LSAN DA 12 | 671J | — | Yes |
| 323-597 | MONTEBELLO | 6529 | 2014-10-17 | Yes |
| 323-598 | MONTEBELLO | 899D | 2014-11-24 | Yes |
| 323-599 | LSAN DA 09 | 9262 | — | 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.