All assignees
799 prefixes in 248 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 248-300 | ROYAL OAK | 6534 | 2024-12-30 | Yes |
| 248-301 | COMMERCE | 318J | 2013-11-08 | Yes |
| 248-302 | SOUTHFIELD | 6003 | 2001-12-28 | — |
| 248-303 | PONTIAC | 6003 | — | — |
| 248-304 | SOUTHFIELD | 9323 | — | Yes |
| 248-305 | NORTHVILLE | 9323 | — | Yes |
| 248-306 | FARMINGTON | 829J | — | Yes |
| 248-307 | ROYAL OAK | 9323 | — | Yes |
| 248-308 | NORTHVILLE | 6003 | 2013-04-21 | Yes |
| 248-309 | PONTIAC | 6003 | 2013-10-07 | Yes |
| 248-310 | PONTIAC | 6003 | — | — |
| 248-311 | XXXXXXXXXX | MULT | — | — |
| 248-312 | BIRMINGHAM | 9323 | — | Yes |
| 248-313 | WALLEDLAKE | 829J | 2005-06-02 | Yes |
| 248-314 | NORTHVILLE | 9748 | — | — |
| 248-315 | TROY | 6534 | 2021-09-21 | Yes |
| 248-316 | ROYAL OAK | 6630 | — | — |
| 248-317 | ROYAL OAK | 6630 | — | — |
| 248-318 | PONTIAC | 6003 | — | — |
| 248-319 | NORTHVILLE | 7279 | — | Yes |
| 248-320 | SOUTHFIELD | 6003 | — | — |
| 248-321 | TROY | 6003 | — | — |
| 248-322 | PONTIAC | 9323 | — | — |
| 248-323 | PONTIAC | 9748 | — | — |
| 248-324 | FARMINGTON | 9323 | — | Yes |
| 248-325 | W BLOOMFLD | 9323 | 2008-08-06 | Yes |
| 248-326 | PONTIAC | 829J | — | Yes |
| 248-327 | SOUTHFIELD | 770E | — | Yes |
| 248-328 | HOLLY | 9323 | — | Yes |
| 248-329 | MILFDWH LK | 046L | — | Yes |
| 248-330 | PONTIAC | 6003 | — | — |
| 248-331 | SOUTHFIELD | 9323 | — | Yes |
| 248-332 | PONTIAC | 9323 | — | — |
| 248-333 | PONTIAC | 9323 | — | — |
| 248-334 | PONTIAC | 9323 | — | — |
| 248-335 | PONTIAC | 9323 | — | — |
| 248-336 | ROYAL OAK | 9323 | — | — |
| 248-338 | PONTIAC | 9323 | — | — |
| 248-339 | PONTIAC | 9323 | — | Yes |
| 248-340 | PONTIAC | 9323 | — | Yes |
| 248-341 | BIRMINGHAM | 6120 | — | Yes |
| 248-342 | PONTIAC | 5562 | — | Yes |
| 248-343 | PONTIAC | 5562 | — | Yes |
| 248-344 | NORTHVILLE | 9323 | — | — |
| 248-345 | NORTHVILLE | 6534 | — | — |
| 248-346 | W BLOOMFLD | 2964 | — | — |
| 248-347 | NORTHVILLE | 9323 | — | — |
| 248-348 | NORTHVILLE | 9323 | — | — |
| 248-349 | NORTHVILLE | 9323 | — | — |
| 248-350 | SOUTHFIELD | 9323 | — | — |
| 248-351 | SOUTHFIELD | 9323 | — | — |
| 248-352 | SOUTHFIELD | 9323 | — | — |
| 248-353 | SOUTHFIELD | 9323 | — | — |
| 248-354 | SOUTHFIELD | 9323 | — | — |
| 248-355 | SOUTHFIELD | 9323 | — | — |
| 248-356 | SOUTHFIELD | 9323 | — | — |
| 248-357 | SOUTHFIELD | 9323 | — | — |
| 248-358 | SOUTHFIELD | 9323 | — | — |
| 248-359 | SOUTHFIELD | 9323 | — | Yes |
| 248-360 | COMMERCE | 9323 | — | — |
| 248-361 | SOUTHFIELD | 5562 | — | Yes |
| 248-362 | TROY | 9323 | — | — |
| 248-363 | COMMERCE | 9323 | — | — |
| 248-364 | PONTIAC | 9323 | — | — |
| 248-365 | PONTIAC | 7279 | — | Yes |
| 248-366 | COMMERCE | 9323 | — | Yes |
| 248-367 | ROYAL OAK | 9748 | — | — |
| 248-368 | SOUTHFIELD | 9323 | — | Yes |
| 248-369 | HOLLY | 7279 | — | Yes |
| 248-370 | PONTIAC | 9323 | — | — |
| 248-371 | PONTIAC | 9323 | — | — |
| 248-372 | SOUTHFIELD | 9323 | — | Yes |
| 248-373 | PONTIAC | 9323 | — | — |
| 248-374 | NORTHVILLE | 9323 | — | — |
| 248-375 | ROCHESTER | 9323 | — | — |
| 248-376 | ROYAL OAK | 6534 | — | Yes |
| 248-377 | PONTIAC | 9323 | — | — |
| 248-378 | NORTHVILLE | 2964 | 2013-09-09 | Yes |
| 248-379 | TROY | 2964 | — | Yes |
| 248-380 | NORTHVILLE | 9323 | — | — |
| 248-381 | FARMINGTON | 6120 | — | Yes |
| 248-382 | HOLLY | 6120 | — | Yes |
| 248-383 | DRAYTON PL | 829J | — | Yes |
| 248-384 | CLARKSTON | 829J | — | Yes |
| 248-385 | BIRMINGHAM | 6534 | 2013-12-18 | Yes |
| 248-386 | SOUTHFIELD | 9323 | — | Yes |
| 248-387 | COMMERCE | 829J | — | Yes |
| 248-388 | SOUTHFIELD | 5562 | — | Yes |
| 248-389 | SOUTHFIELD | 6534 | 2021-04-22 | Yes |
| 248-390 | PONTIAC | 5562 | — | Yes |
| 248-391 | PONTIAC | 9323 | — | — |
| 248-392 | PONTIAC | 5562 | 2011-06-08 | Yes |
| 248-393 | PONTIAC | 9323 | — | — |
| 248-394 | CLARKSTON | 9323 | — | Yes |
| 248-395 | SOUTHFIELD | 9323 | — | Yes |
| 248-396 | PONTIAC | 5562 | — | Yes |
| 248-397 | ROYAL OAK | 7279 | — | Yes |
| 248-398 | ROYAL OAK | 9323 | — | — |
| 248-399 | ROYAL OAK | 9323 | — | — |
| 248-400 | SOUTHFIELD | 9748 | — | — |
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.