All assignees
782 prefixes in 313 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 313-400 | DETROITZN5 | 6003 | — | — |
| 313-401 | DETROITZN5 | 6534 | — | Yes |
| 313-402 | DETROITZN5 | 6003 | — | — |
| 313-403 | DETROITZN6 | 2964 | 2014-10-23 | Yes |
| 313-404 | DETROITZN5 | 6534 | — | Yes |
| 313-405 | DETROITZN5 | 6534 | — | Yes |
| 313-406 | DETROITZN6 | 318J | — | Yes |
| 313-407 | DETROITZN5 | 6003 | — | — |
| 313-408 | DETROITZN5 | 6534 | — | — |
| 313-409 | DETROITZN5 | 6534 | — | Yes |
| 313-410 | DETROITZN5 | 6003 | — | — |
| 313-411 | XXXXXXXXXX | MULT | — | — |
| 313-412 | DETROITZN5 | 6534 | — | Yes |
| 313-413 | DETROITZN4 | 2964 | 2015-05-11 | Yes |
| 313-414 | DETROITZN6 | 2964 | — | — |
| 313-415 | DETROITZN6 | 2964 | — | — |
| 313-416 | DETROITZN4 | 7279 | — | Yes |
| 313-417 | DETROITZN2 | 9323 | — | Yes |
| 313-418 | DETROITZN5 | 6003 | — | — |
| 313-419 | DETROITZN3 | 2964 | 2022-08-10 | Yes |
| 313-420 | DETROITZN1 | 829J | — | Yes |
| 313-421 | DETROITZN5 | 6534 | — | Yes |
| 313-422 | DETROITZN3 | 7279 | — | Yes |
| 313-423 | DETROITZN2 | 2964 | 2005-05-05 | Yes |
| 313-424 | DETROITZN1 | 5562 | — | Yes |
| 313-425 | DETROITZN6 | 9323 | — | Yes |
| 313-426 | DETROITZN1 | 991E | 2017-01-12 | Yes |
| 313-427 | DETROITZN6 | 543C | 2008-10-03 | Yes |
| 313-428 | DETROITZN5 | 2964 | 2012-08-29 | Yes |
| 313-429 | DETROITZN6 | 770E | — | Yes |
| 313-430 | DETROITZN1 | 9748 | — | — |
| 313-431 | DETROITZN4 | 2964 | 2023-08-04 | Yes |
| 313-432 | DETROITZN2 | 6120 | — | Yes |
| 313-433 | DETROITZN5 | 2964 | — | Yes |
| 313-434 | DETROITZN5 | 6003 | — | Yes |
| 313-435 | DETROITZN6 | 543C | 2023-06-20 | Yes |
| 313-436 | DETROITZN6 | 9323 | — | Yes |
| 313-437 | DETROITZN4 | 770E | 2010-03-19 | Yes |
| 313-438 | DETROITZN6 | 9323 | — | Yes |
| 313-439 | DETROITZN5 | 6534 | 2023-11-07 | Yes |
| 313-440 | DETROITZN5 | 6630 | — | — |
| 313-441 | DETROITZN6 | 9323 | — | — |
| 313-442 | DETROITZN1 | 9323 | — | Yes |
| 313-443 | DETROITZN6 | 2964 | — | — |
| 313-444 | DETROITZN2 | 829J | 2009-04-16 | Yes |
| 313-445 | DETROITZN6 | 2964 | — | — |
| 313-446 | DETROITZN1 | 9323 | — | Yes |
| 313-447 | DETROITZN2 | 2964 | 2005-03-28 | Yes |
| 313-448 | DETROITZN1 | 9323 | 2010-12-09 | Yes |
| 313-449 | DETROITZN2 | 7279 | — | Yes |
| 313-450 | DETROITZN5 | 7279 | — | Yes |
| 313-451 | DETROITZN6 | 991E | 2010-02-17 | Yes |
| 313-452 | DETROITZN5 | 6534 | — | Yes |
| 313-453 | DETROITZN2 | 817J | — | — |
| 313-454 | DETROITZN3 | 5562 | — | Yes |
| 313-455 | DETROITZN3 | 2964 | 2010-11-23 | Yes |
| 313-456 | DETROITZN1 | 9323 | — | Yes |
| 313-457 | DETROITZN6 | 7279 | — | Yes |
| 313-458 | DETROITZN2 | 829J | 2007-07-13 | Yes |
| 313-459 | DETROITZN1 | 5562 | 2004-10-05 | Yes |
| 313-460 | DETROITZN5 | 6534 | — | — |
| 313-461 | DETROITZN5 | 2964 | — | Yes |
| 313-462 | DETROITZN1 | 543C | 2010-04-02 | Yes |
| 313-463 | DETROITZN1 | 770E | — | Yes |
| 313-464 | DETROITZN6 | 114J | 2019-09-16 | Yes |
| 313-465 | DETROITZN1 | 770E | — | Yes |
| 313-466 | DETROITZN2 | 2964 | 2004-10-13 | Yes |
| 313-467 | DETROITZN6 | 2964 | — | — |
| 313-468 | DETROITZN4 | 2964 | — | Yes |
| 313-469 | DETROITZN2 | 318J | 2006-09-26 | Yes |
| 313-470 | DETROITZN2 | 991E | 2022-10-17 | Yes |
| 313-471 | DETROITZN1 | 9323 | — | Yes |
| 313-472 | DETROITZN5 | 516C | 2013-05-17 | Yes |
| 313-473 | DETROITZN2 | 9323 | 2008-08-06 | Yes |
| 313-474 | DETROITZN4 | 991E | 2019-04-11 | Yes |
| 313-475 | DETROITZN5 | 2964 | — | Yes |
| 313-476 | DETROITZN6 | 515J | 2021-01-28 | Yes |
| 313-477 | DETROITZN6 | 2964 | — | Yes |
| 313-478 | DETROITZN6 | 2964 | — | — |
| 313-479 | DETROITZN6 | 6534 | 2020-09-02 | Yes |
| 313-480 | DETROITZN5 | 6003 | 2020-12-08 | Yes |
| 313-481 | DETROITZN1 | 817J | — | — |
| 313-482 | DETROITZN1 | 9323 | 2008-10-09 | Yes |
| 313-483 | DETROITZN1 | 6120 | — | Yes |
| 313-484 | DETROITZN1 | 6120 | — | Yes |
| 313-485 | DETROITZN6 | 2964 | — | Yes |
| 313-486 | DETROITZN5 | 6120 | — | Yes |
| 313-487 | DETROITZN1 | 829J | — | Yes |
| 313-488 | DETROITZN1 | 939H | 2019-05-02 | Yes |
| 313-489 | DETROITZN5 | 991E | 2021-01-12 | Yes |
| 313-490 | DETROITZN6 | 770E | 2021-11-18 | Yes |
| 313-491 | DETROITZN4 | 9323 | — | Yes |
| 313-492 | DETROITZN5 | 2964 | — | Yes |
| 313-493 | DETROITZN4 | 9323 | — | Yes |
| 313-494 | DETROITZN1 | 9323 | — | — |
| 313-495 | DETROITZN5 | 6003 | 2012-09-28 | Yes |
| 313-496 | DETROITZN1 | 9323 | — | — |
| 313-497 | DETROITZN5 | 991E | — | Yes |
| 313-498 | DETROITZN5 | 6003 | — | — |
| 313-499 | DETROITZN2 | 9323 | — | 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.