All assignees
613 prefixes in 612 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 612-502 | TWINCITIES | 184D | 2012-02-16 | Yes |
| 612-503 | TWINCITIES | 5816 | 2015-04-14 | Yes |
| 612-504 | TWINCITIES | 980E | 2015-04-20 | Yes |
| 612-505 | TWINCITIES | 5816 | 2016-09-19 | Yes |
| 612-507 | — | — | ||
| 612-508 | TWINCITIES | 5816 | — | — |
| 612-509 | TWINCITIES | 107F | 2016-10-14 | Yes |
| 612-510 | TWINCITIES | 9748 | — | — |
| 612-511 | XXXXXXXXXX | MULT | — | — |
| 612-512 | TWINCITIES | 6701 | 2016-06-15 | Yes |
| 612-513 | TWINCITIES | 6534 | 2016-11-02 | Yes |
| 612-514 | TWINCITIES | 184D | 2022-09-14 | Yes |
| 612-515 | TWINCITIES | 624H | 2023-08-17 | Yes |
| 612-516 | TWINCITIES | 7229 | — | Yes |
| 612-517 | TWINCITIES | 6701 | 2016-09-19 | Yes |
| 612-518 | TWINCITIES | 5816 | — | — |
| 612-520 | TWINCITIES | 9631 | — | Yes |
| 612-521 | TWINCITIES | 9631 | — | — |
| 612-522 | TWINCITIES | 9631 | — | — |
| 612-523 | TWINCITIES | 5816 | 2023-09-25 | Yes |
| 612-524 | TWINCITIES | 7783 | — | Yes |
| 612-525 | TWINCITIES | 318J | 2023-10-25 | Yes |
| 612-526 | TWINCITIES | 9748 | — | — |
| 612-527 | TWINCITIES | 9748 | — | — |
| 612-528 | TWINCITIES | 5816 | 2023-11-21 | Yes |
| 612-529 | TWINCITIES | 9631 | — | — |
| 612-530 | TWINCITIES | 9748 | — | — |
| 612-532 | TWINCITIES | 6701 | — | — |
| 612-534 | TWINCITIES | 9748 | — | — |
| 612-538 | TWINCITIES | 9748 | — | — |
| 612-539 | TWINCITIES | 9748 | — | — |
| 612-540 | TWINCITIES | 6701 | 2016-12-15 | Yes |
| 612-541 | TWINCITIES | 598J | 2023-12-01 | Yes |
| 612-542 | TWINCITIES | 475J | 2023-12-12 | Yes |
| 612-543 | TWINCITIES | 9631 | 2005-12-01 | Yes |
| 612-544 | TWINCITIES | 6534 | 2024-07-12 | Yes |
| 612-545 | TWINCITIES | 9631 | 2001-02-08 | Yes |
| 612-546 | TWINCITIES | 6534 | 2024-09-04 | Yes |
| 612-547 | TWINCITIES | 7229 | — | Yes |
| 612-548 | TWINCITIES | 5256 | — | Yes |
| 612-552 | TWINCITIES | 5562 | 2019-01-08 | Yes |
| 612-554 | TWINCITIES | 5816 | — | — |
| 612-555 | DIR ASST | MULT | — | — |
| 612-556 | TWINCITIES | 6534 | 2024-10-18 | Yes |
| 612-558 | TWINCITIES | 6701 | — | Yes |
| 612-559 | TWINCITIES | 6701 | 2001-09-13 | Yes |
| 612-562 | TWINCITIES | 7229 | — | Yes |
| 612-563 | TWINCITIES | 5816 | 2025-02-20 | Yes |
| 612-564 | TWINCITIES | 7229 | — | Yes |
| 612-567 | TWINCITIES | 7229 | — | Yes |
| 612-568 | TWINCITIES | 5256 | 2006-07-03 | Yes |
| 612-570 | CAMBRIDGE | 5816 | — | Yes |
| 612-573 | TWINCITIES | 9631 | — | — |
| 612-578 | TWINCITIES | 6701 | — | Yes |
| 612-579 | TWINCITIES | 6630 | — | — |
| 612-580 | TWINCITIES | 9748 | — | — |
| 612-581 | TWINCITIES | 5816 | — | — |
| 612-582 | TWINCITIES | 6534 | 2025-04-23 | Yes |
| 612-583 | TWINCITIES | 6534 | 2025-07-02 | Yes |
| 612-584 | TWINCITIES | 980E | 2007-06-21 | Yes |
| 612-587 | TWINCITIES | 9631 | — | Yes |
| 612-588 | TWINCITIES | 9631 | — | — |
| 612-589 | TWINCITIES | 9748 | — | — |
| 612-590 | TWINCITIES | 5816 | — | — |
| 612-591 | TWINCITIES | 6534 | 2025-08-06 | Yes |
| 612-592 | TWINCITIES | 616J | 2024-11-29 | Yes |
| 612-593 | TWINCITIES | 5816 | 2025-10-24 | Yes |
| 612-594 | TWINCITIES | 7229 | — | Yes |
| 612-596 | TWINCITIES | 9631 | — | — |
| 612-597 | TWINCITIES | 5816 | — | — |
| 612-598 | TWINCITIES | 6701 | — | — |
| 612-599 | TWINCITIES | 5816 | — | — |
| 612-600 | TWINCITIES | 6701 | — | Yes |
| 612-601 | TWINCITIES | 5562 | 2016-09-12 | Yes |
| 612-604 | TWINCITIES | 7229 | — | — |
| 612-605 | TWINCITIES | 5256 | — | — |
| 612-606 | TWINCITIES | 6630 | — | — |
| 612-607 | TWINCITIES | 7229 | — | Yes |
| 612-608 | TWINCITIES | 6534 | 2025-01-13 | Yes |
| 612-609 | TWINCITIES | 6630 | — | — |
| 612-611 | XXXXXXXXXX | MULT | — | — |
| 612-612 | — | — | ||
| 612-613 | TWINCITIES | 9748 | — | — |
| 612-614 | TWINCITIES | 184D | 2022-11-07 | Yes |
| 612-615 | TWINCITIES | 7229 | — | Yes |
| 612-616 | TWINCITIES | 5816 | — | — |
| 612-617 | TWINCITIES | 9631 | — | — |
| 612-618 | TWINCITIES | 5816 | — | — |
| 612-619 | TWINCITIES | 5816 | — | — |
| 612-621 | TWINCITIES | 6630 | — | — |
| 612-622 | TWINCITIES | 6630 | — | — |
| 612-623 | TWINCITIES | 9631 | — | — |
| 612-624 | TWINCITIES | 8405 | — | — |
| 612-625 | TWINCITIES | 8405 | — | — |
| 612-626 | TWINCITIES | 8405 | — | — |
| 612-627 | TWINCITIES | 9631 | — | — |
| 612-629 | TWINCITIES | 9631 | — | Yes |
| 612-630 | TWINCITIES | 9631 | — | — |
| 612-632 | TWINCITIES | 9631 | — | — |
| 612-633 | TWINCITIES | 624H | 2021-09-14 | 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.