All assignees
782 prefixes in 313 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 313-601 | DETROITZN5 | 9748 | — | — |
| 313-602 | DETROITZN5 | 9323 | — | — |
| 313-603 | DETROITZN3 | 2964 | 2012-10-19 | Yes |
| 313-604 | DETROITZN1 | 616J | — | Yes |
| 313-605 | DETROITZN5 | 6534 | — | — |
| 313-606 | DETROITZN5 | 9748 | — | — |
| 313-607 | DETROITZN5 | 6534 | 2023-12-04 | Yes |
| 313-608 | DETROITZN5 | 6534 | — | — |
| 313-609 | DETROITZN5 | 9748 | — | — |
| 313-610 | DETROITZN5 | 6534 | — | — |
| 313-611 | XXXXXXXXXX | MULT | — | — |
| 313-612 | DETROITZN1 | 543C | 2021-11-03 | Yes |
| 313-613 | DETROITZN5 | 6534 | — | — |
| 313-614 | DETROITZN5 | 6003 | — | Yes |
| 313-615 | DETROITZN6 | 2964 | — | Yes |
| 313-616 | DETROITZN1 | 700J | 2025-06-09 | Yes |
| 313-617 | DETROITZN5 | 6534 | — | — |
| 313-618 | DETROITZN5 | 6003 | — | — |
| 313-619 | DETROITZN6 | 9323 | — | — |
| 313-620 | DETROITZN3 | 490J | 2025-04-02 | Yes |
| 313-621 | DETROITZN6 | 9323 | — | — |
| 313-622 | DETROITZN5 | 2964 | — | Yes |
| 313-623 | DETROITZN5 | 2964 | — | Yes |
| 313-624 | DETROITZN6 | 9323 | — | Yes |
| 313-625 | DETROITZN6 | 817J | — | — |
| 313-626 | DETROITZN2 | 991E | 2010-11-11 | Yes |
| 313-627 | DETROITZN5 | 6534 | — | Yes |
| 313-628 | DETROITZN1 | 9323 | — | — |
| 313-629 | DETROITZN5 | 5562 | 2001-11-05 | Yes |
| 313-630 | DETROITZN5 | 6630 | — | — |
| 313-631 | DETROITZN2 | 543C | 2020-09-02 | Yes |
| 313-632 | DETROITZN6 | 2964 | — | Yes |
| 313-633 | DETROITZN6 | 5562 | — | Yes |
| 313-634 | DETROITZN3 | 543C | 2020-09-02 | Yes |
| 313-635 | DETROITZN4 | 318J | 2015-05-12 | Yes |
| 313-636 | DETROITZN4 | 991E | 2016-04-15 | Yes |
| 313-637 | DETROITZN6 | 829J | — | Yes |
| 313-638 | DETROITZN1 | 318J | — | Yes |
| 313-639 | DETROITZN1 | 2964 | 2022-07-28 | Yes |
| 313-640 | DETROITZN2 | 9323 | — | Yes |
| 313-641 | DETROITZN6 | 2964 | — | Yes |
| 313-642 | DETROITZN2 | 9323 | — | Yes |
| 313-643 | DETROITZN5 | 6003 | — | Yes |
| 313-644 | DETROITZN3 | 991E | 2021-04-14 | Yes |
| 313-645 | DETROITZN6 | 2964 | — | — |
| 313-646 | DETROITZN4 | 318J | — | Yes |
| 313-647 | DETROITZN2 | 9323 | — | Yes |
| 313-648 | DETROITZN5 | 6003 | — | Yes |
| 313-649 | DETROITZN2 | 2964 | 2011-10-06 | Yes |
| 313-650 | DETROITZN6 | 6534 | 2021-07-29 | Yes |
| 313-651 | DETROITZN4 | 7279 | — | Yes |
| 313-652 | DETROITZN1 | 2964 | 2016-07-12 | Yes |
| 313-653 | DETROITZN4 | 9323 | — | Yes |
| 313-654 | DETROITZN5 | 6534 | 2022-03-08 | Yes |
| 313-655 | DETROITZN5 | 6534 | — | — |
| 313-656 | DETROITZN1 | 9323 | — | Yes |
| 313-657 | DETROITZN5 | 6534 | — | — |
| 313-658 | DETROITZN6 | 2964 | — | Yes |
| 313-659 | DETROITZN4 | 9323 | — | Yes |
| 313-660 | DETROITZN5 | 9748 | — | — |
| 313-661 | DETROITZN3 | 2964 | 2022-02-22 | Yes |
| 313-662 | DETROITZN5 | 6120 | — | Yes |
| 313-663 | DETROITZN6 | 2964 | — | Yes |
| 313-664 | DETROITZN1 | 9323 | — | — |
| 313-665 | DETROITZN1 | 9323 | — | — |
| 313-666 | DETROITZN6 | 543C | 2015-09-17 | Yes |
| 313-667 | DETROITZN1 | 9323 | — | — |
| 313-668 | DETROITZN6 | 817J | — | — |
| 313-669 | DETROITZN5 | 6534 | 2022-01-25 | Yes |
| 313-670 | DETROITZN5 | 6003 | — | — |
| 313-671 | DETROITZN5 | 2964 | — | Yes |
| 313-672 | DETROITZN1 | 817J | — | — |
| 313-673 | DETROITZN5 | 2964 | — | Yes |
| 313-674 | DETROITZN6 | 2964 | — | Yes |
| 313-675 | DETROITZN6 | 2964 | — | Yes |
| 313-676 | DETROITZN5 | 6534 | — | Yes |
| 313-677 | DETROITZN4 | 965H | 2019-12-18 | Yes |
| 313-678 | DETROITZN2 | 770E | 2020-08-17 | Yes |
| 313-680 | DETROITZN5 | 6534 | — | — |
| 313-681 | DETROITZN5 | 6534 | — | Yes |
| 313-682 | DETROITZN5 | 6534 | — | — |
| 313-683 | DETROITZN5 | 6534 | — | Yes |
| 313-684 | DETROITZN4 | 9748 | — | — |
| 313-685 | DETROITZN5 | 6534 | — | Yes |
| 313-686 | DETROITZN5 | 6534 | — | Yes |
| 313-687 | DETROITZN5 | 6534 | — | Yes |
| 313-688 | DETROITZN5 | 965H | 2019-12-18 | Yes |
| 313-689 | DETROITZN5 | 6534 | — | Yes |
| 313-690 | DETROITZN5 | 6534 | — | — |
| 313-691 | DETROITZN5 | 9748 | — | — |
| 313-692 | DETROITZN2 | 817J | — | — |
| 313-693 | DETROITZN5 | 318J | — | Yes |
| 313-694 | DETROITZN5 | 516C | — | Yes |
| 313-695 | DETROITZN5 | 2964 | — | Yes |
| 313-696 | DETROITZN4 | 732J | — | Yes |
| 313-697 | DETROITZN5 | 6534 | 2024-06-07 | Yes |
| 313-698 | DETROITZN3 | 543C | 2022-11-23 | Yes |
| 313-699 | DETROITZN4 | 2964 | 2014-11-07 | Yes |
| 313-700 | — | — | ||
| 313-701 | DETROITZN5 | 6003 | — | — |
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.