All assignees
798 prefixes in 305 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 305-500 | MIAMI | 9417 | — | Yes |
| 305-501 | KEYS | 4802 | 2011-09-20 | Yes |
| 305-502 | NORTH DADE | 6889 | — | Yes |
| 305-503 | MIAMI | 829J | — | — |
| 305-504 | KEYS | 6889 | 2012-11-21 | Yes |
| 305-505 | MIAMI | 6214 | — | — |
| 305-506 | PERRINE | 8664 | — | Yes |
| 305-507 | MIAMI | 8664 | — | Yes |
| 305-508 | HOMESTEAD | 8664 | — | Yes |
| 305-509 | KEYS | 6214 | — | Yes |
| 305-510 | MIAMI | 6214 | — | — |
| 305-511 | XXXXXXXXXX | MULT | — | — |
| 305-512 | MIAMI | 9417 | — | — |
| 305-513 | MIAMI | 9417 | — | Yes |
| 305-514 | MIAMI | 9417 | — | Yes |
| 305-515 | KEYS | 9417 | — | Yes |
| 305-516 | MIAMI | 6548 | — | — |
| 305-517 | KEYS | 9417 | — | Yes |
| 305-518 | MIAMI | 624H | — | Yes |
| 305-519 | MIAMI | 5562 | — | Yes |
| 305-520 | MIAMI | 9417 | — | Yes |
| 305-521 | NORTH DADE | 8664 | — | Yes |
| 305-522 | KEYS | 5562 | — | Yes |
| 305-523 | MIAMI | 9417 | — | Yes |
| 305-524 | MIAMI | 6548 | — | — |
| 305-525 | NORTH DADE | 6889 | — | Yes |
| 305-526 | MIAMI | 9417 | — | Yes |
| 305-527 | NORTH DADE | 6889 | — | Yes |
| 305-528 | NORTH DADE | 6889 | — | Yes |
| 305-529 | MIAMI | 9417 | — | — |
| 305-530 | MIAMI | 9417 | — | Yes |
| 305-531 | MIAMI | 9417 | — | — |
| 305-532 | MIAMI | 9417 | — | — |
| 305-533 | MIAMI | 9417 | — | — |
| 305-534 | MIAMI | 9417 | — | — |
| 305-535 | MIAMI | 9417 | — | — |
| 305-536 | MIAMI | 9417 | — | — |
| 305-537 | MIAMI | 7635 | — | Yes |
| 305-538 | MIAMI | 9417 | — | — |
| 305-539 | MIAMI | 9417 | — | Yes |
| 305-540 | MIAMI | 6889 | 2023-03-08 | Yes |
| 305-541 | MIAMI | 9417 | — | — |
| 305-542 | NORTH DADE | 6214 | — | — |
| 305-543 | MIAMI | 6630 | — | — |
| 305-544 | MIAMI | 6630 | — | — |
| 305-545 | MIAMI | 9417 | — | — |
| 305-546 | MIAMI | 6214 | — | — |
| 305-547 | MIAMI | 9417 | — | Yes |
| 305-548 | MIAMI | 9417 | — | Yes |
| 305-549 | MIAMI | 9417 | — | Yes |
| 305-550 | MIAMI | 9417 | — | — |
| 305-551 | MIAMI | 9417 | — | — |
| 305-552 | MIAMI | 9417 | — | — |
| 305-553 | MIAMI | 9417 | — | — |
| 305-554 | MIAMI | 9417 | — | — |
| 305-555 | DIR ASST | MULT | — | — |
| 305-556 | MIAMI | 9417 | — | — |
| 305-557 | MIAMI | 9417 | — | — |
| 305-558 | MIAMI | 9417 | — | — |
| 305-559 | MIAMI | 9417 | — | — |
| 305-560 | MIAMI | 9417 | — | Yes |
| 305-561 | MIAMI | 6502 | 2022-06-08 | Yes |
| 305-562 | PERRINE | 6214 | — | — |
| 305-563 | KEYS | 6502 | 2014-06-10 | Yes |
| 305-564 | MIAMI | 937C | 2022-03-08 | Yes |
| 305-565 | MIAMI | 5562 | 2022-04-08 | Yes |
| 305-566 | MIAMI | 6548 | — | — |
| 305-567 | MIAMI | 9417 | — | — |
| 305-568 | MIAMI | 6548 | — | — |
| 305-569 | MIAMI | 9417 | — | — |
| 305-570 | KEYS | 6214 | 2013-07-25 | Yes |
| 305-571 | MIAMI | 9417 | — | Yes |
| 305-572 | MIAMI | 9417 | — | Yes |
| 305-573 | MIAMI | 9417 | — | — |
| 305-574 | PERRINE | 8664 | 2001-01-02 | Yes |
| 305-575 | MIAMI | 9417 | — | Yes |
| 305-576 | MIAMI | 9417 | — | — |
| 305-577 | MIAMI | 9417 | — | — |
| 305-578 | MIAMI | 6548 | — | — |
| 305-579 | MIAMI | 9417 | — | — |
| 305-580 | MIAMI | 6548 | — | — |
| 305-581 | KEYS | 829J | — | — |
| 305-582 | MIAMI | 6214 | — | — |
| 305-584 | MIAMI | 6548 | — | — |
| 305-585 | MIAMI | 9417 | — | — |
| 305-586 | MIAMI | 6214 | — | — |
| 305-587 | KEYS | 6214 | — | Yes |
| 305-588 | MIAMI | 6214 | — | — |
| 305-589 | MIAMI | 5562 | 2022-03-08 | Yes |
| 305-590 | MIAMI | 9417 | — | Yes |
| 305-591 | MIAMI | 9417 | — | — |
| 305-592 | MIAMI | 9417 | — | — |
| 305-593 | MIAMI | 9417 | — | — |
| 305-594 | MIAMI | 9417 | — | — |
| 305-595 | MIAMI | 9417 | — | — |
| 305-596 | MIAMI | 9417 | — | — |
| 305-597 | MIAMI | 9417 | — | — |
| 305-598 | MIAMI | 9417 | — | — |
| 305-599 | MIAMI | 9417 | — | — |
| 305-600 | KEYS | 4802 | 2001-04-27 | 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.