MICHIGAN BELL TEL CO
251 prefixes in 248 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 248-203 | BIRMINGHAM | 9323 | — | — |
| 248-208 | SOUTHFIELD | 9323 | — | Yes |
| 248-213 | SOUTHFIELD | 9323 | — | Yes |
| 248-223 | SOUTHFIELD | 9323 | — | Yes |
| 248-236 | OXFORD | 9323 | — | Yes |
| 248-244 | TROY | 9323 | — | — |
| 248-253 | PONTIAC | 9323 | — | — |
| 248-258 | BIRMINGHAM | 9323 | — | — |
| 248-262 | SOUTHFIELD | 9323 | — | Yes |
| 248-263 | SOUTHFIELD | 9323 | — | Yes |
| 248-265 | BIRMINGHAM | 9323 | — | Yes |
| 248-267 | BIRMINGHAM | 9323 | — | — |
| 248-269 | TROY | 9323 | — | Yes |
| 248-273 | TROY | 9323 | — | — |
| 248-276 | PONTIAC | 9323 | — | — |
| 248-280 | ROYAL OAK | 9323 | — | — |
| 248-288 | ROYAL OAK | 9323 | — | — |
| 248-293 | AUBURN HTS | 9323 | — | — |
| 248-299 | AUBURN HTS | 9323 | — | — |
| 248-304 | SOUTHFIELD | 9323 | — | Yes |
| 248-305 | NORTHVILLE | 9323 | — | Yes |
| 248-307 | ROYAL OAK | 9323 | — | Yes |
| 248-312 | BIRMINGHAM | 9323 | — | Yes |
| 248-322 | PONTIAC | 9323 | — | — |
| 248-324 | FARMINGTON | 9323 | — | Yes |
| 248-325 | W BLOOMFLD | 9323 | 2008-08-06 | Yes |
| 248-328 | HOLLY | 9323 | — | Yes |
| 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 |
| 248-344 | NORTHVILLE | 9323 | — | — |
| 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 | — | — |
| 248-362 | TROY | 9323 | — | — |
| 248-363 | COMMERCE | 9323 | — | — |
| 248-364 | PONTIAC | 9323 | — | — |
| 248-366 | COMMERCE | 9323 | — | Yes |
| 248-368 | SOUTHFIELD | 9323 | — | 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 | — | — |
| 248-377 | PONTIAC | 9323 | — | — |
| 248-380 | NORTHVILLE | 9323 | — | — |
| 248-386 | SOUTHFIELD | 9323 | — | Yes |
| 248-391 | PONTIAC | 9323 | — | — |
| 248-393 | PONTIAC | 9323 | — | — |
| 248-394 | CLARKSTON | 9323 | — | Yes |
| 248-395 | SOUTHFIELD | 9323 | — | Yes |
| 248-398 | ROYAL OAK | 9323 | — | — |
| 248-399 | ROYAL OAK | 9323 | — | — |
| 248-404 | TROY | 9323 | — | Yes |
| 248-414 | ROYAL OAK | 9323 | — | Yes |
| 248-423 | SOUTHFIELD | 9323 | — | — |
| 248-424 | SOUTHFIELD | 9323 | — | — |
| 248-426 | FARMINGTON | 9323 | — | — |
| 248-427 | FARMINGTON | 9323 | — | — |
| 248-433 | BIRMINGHAM | 9323 | — | Yes |
| 248-435 | ROYAL OAK | 9323 | — | — |
| 248-437 | SOUTH LYON | 9323 | — | — |
| 248-442 | FARMINGTON | 9323 | — | — |
| 248-443 | SOUTHFIELD | 9323 | — | — |
| 248-445 | SOUTHFIELD | 9323 | — | Yes |
| 248-446 | SOUTH LYON | 9323 | — | Yes |
| 248-447 | SOUTHFIELD | 9323 | — | — |
| 248-448 | SOUTHFIELD | 9323 | — | Yes |
| 248-449 | NORTHVILLE | 9323 | — | — |
| 248-451 | PONTIAC | 9323 | — | — |
| 248-452 | PONTIAC | 9323 | — | Yes |
| 248-454 | PONTIAC | 9323 | — | — |
| 248-455 | SOUTHFIELD | 9323 | — | Yes |
| 248-456 | PONTIAC | 9323 | — | — |
| 248-457 | TROY | 9323 | — | Yes |
| 248-458 | BIRMINGHAM | 9323 | — | Yes |
| 248-463 | BIRMINGHAM | 9323 | — | Yes |
| 248-465 | NORTHVILLE | 9323 | — | — |
| 248-471 | FARMINGTON | 9323 | — | — |
| 248-473 | FARMINGTON | 9323 | — | Yes |
| 248-474 | FARMINGTON | 9323 | — | — |
| 248-475 | PONTIAC | 9323 | — | — |
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.