All assignees
799 prefixes in 248 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 248-200 | SOUTHFIELD | 829J | 2003-10-01 | Yes |
| 248-201 | SOUTHFIELD | 733J | 2023-08-17 | Yes |
| 248-202 | PONTIAC | 6534 | — | — |
| 248-203 | BIRMINGHAM | 9323 | — | — |
| 248-204 | SOUTHFIELD | 770E | — | — |
| 248-205 | BIRMINGHAM | 770E | — | Yes |
| 248-206 | ROYAL OAK | 6120 | 2014-02-12 | Yes |
| 248-207 | NORTHVILLE | 6003 | — | — |
| 248-208 | SOUTHFIELD | 9323 | — | Yes |
| 248-209 | PONTIAC | 7279 | — | Yes |
| 248-210 | PONTIAC | 2964 | — | Yes |
| 248-211 | XXXXXXXXXX | MULT | — | — |
| 248-212 | PONTIAC | 5562 | — | Yes |
| 248-213 | SOUTHFIELD | 9323 | — | Yes |
| 248-214 | PONTIAC | 5562 | — | Yes |
| 248-215 | HOLLY | 770E | — | Yes |
| 248-216 | MILFDWH LK | 6003 | 2013-02-01 | Yes |
| 248-217 | ROYAL OAK | 6534 | — | — |
| 248-218 | ROCHESTER | 7279 | — | Yes |
| 248-219 | ROYAL OAK | 6534 | — | — |
| 248-220 | BIRMINGHAM | 829J | — | Yes |
| 248-221 | PONTIAC | 770E | 2013-07-30 | Yes |
| 248-222 | MILFDWH LK | 6003 | 2013-02-01 | Yes |
| 248-223 | SOUTHFIELD | 9323 | — | Yes |
| 248-224 | ROYAL OAK | 6534 | — | — |
| 248-225 | BIRMINGHAM | 6534 | — | — |
| 248-226 | SOUTHFIELD | 770E | — | Yes |
| 248-227 | BIRMINGHAM | 6534 | — | — |
| 248-228 | SOUTHFIELD | 2550 | — | Yes |
| 248-229 | BIRMINGHAM | 6534 | — | — |
| 248-230 | PONTIAC | 6120 | — | Yes |
| 248-231 | NORTHVILLE | 6534 | — | — |
| 248-232 | PONTIAC | 6120 | — | Yes |
| 248-233 | SOUTHFIELD | 6120 | — | — |
| 248-234 | SOUTHFIELD | 508J | 2012-06-27 | Yes |
| 248-235 | ROYAL OAK | 9748 | — | — |
| 248-236 | OXFORD | 9323 | — | Yes |
| 248-237 | AUBURN HTS | 6120 | — | Yes |
| 248-238 | CLARKSTON | 2964 | 2008-02-07 | Yes |
| 248-239 | PONTIAC | 7279 | — | Yes |
| 248-240 | HOLLY | 5562 | — | Yes |
| 248-241 | CLARKSTON | 770E | — | Yes |
| 248-242 | COMMERCE | 770E | — | Yes |
| 248-243 | AUBURN HTS | 6120 | — | Yes |
| 248-244 | TROY | 9323 | — | — |
| 248-245 | HOLLY | 6534 | — | — |
| 248-246 | ROYAL OAK | 6120 | — | Yes |
| 248-247 | TROY | 2550 | — | Yes |
| 248-248 | NORTHVILLE | 624H | 2023-05-17 | Yes |
| 248-249 | HOLLY | 5562 | — | Yes |
| 248-250 | TROY | 318J | — | Yes |
| 248-251 | TROY | 6003 | 2008-02-14 | Yes |
| 248-252 | W BLOOMFLD | 2964 | — | — |
| 248-253 | PONTIAC | 9323 | — | — |
| 248-254 | W BLOOMFLD | 829J | — | Yes |
| 248-255 | WALLEDLAKE | 2964 | — | Yes |
| 248-256 | OXFORD | 6120 | — | Yes |
| 248-257 | DRAYTON PL | 6120 | — | Yes |
| 248-258 | BIRMINGHAM | 9323 | — | — |
| 248-259 | ROYAL OAK | 2964 | 2001-05-02 | Yes |
| 248-260 | AUBURN HTS | 7279 | — | Yes |
| 248-261 | BIRMINGHAM | 6534 | 2025-12-16 | Yes |
| 248-262 | SOUTHFIELD | 9323 | — | Yes |
| 248-263 | SOUTHFIELD | 9323 | — | Yes |
| 248-264 | SOUTH LYON | 7279 | — | Yes |
| 248-265 | BIRMINGHAM | 9323 | — | Yes |
| 248-266 | ROCHESTER | 991E | 2010-05-21 | Yes |
| 248-267 | BIRMINGHAM | 9323 | — | — |
| 248-268 | ROYAL OAK | 318J | 2013-04-05 | Yes |
| 248-269 | TROY | 9323 | — | Yes |
| 248-270 | AUBURN HTS | 7279 | — | Yes |
| 248-271 | HOLLY | 9748 | — | — |
| 248-272 | PONTIAC | 6630 | — | — |
| 248-273 | TROY | 9323 | — | — |
| 248-274 | OXFORD | 6120 | — | Yes |
| 248-275 | TROY | 6120 | — | Yes |
| 248-276 | PONTIAC | 9323 | — | — |
| 248-277 | NORTHVILLE | 5562 | — | Yes |
| 248-278 | SOUTH LYON | 5562 | 2011-05-13 | Yes |
| 248-279 | NORTHVILLE | 9748 | — | — |
| 248-280 | ROYAL OAK | 9323 | — | — |
| 248-281 | SOUTHFIELD | 7279 | — | Yes |
| 248-282 | BIRMINGHAM | 7279 | — | Yes |
| 248-283 | BIRMINGHAM | 7279 | — | Yes |
| 248-284 | ROYAL OAK | 7279 | — | Yes |
| 248-285 | PONTIAC | 6003 | 2011-01-26 | Yes |
| 248-286 | SOUTHFIELD | 817J | — | — |
| 248-287 | LAKE ORION | 7279 | — | Yes |
| 248-288 | ROYAL OAK | 9323 | — | — |
| 248-289 | AUBURN HTS | 318J | — | Yes |
| 248-290 | BIRMINGHAM | 829J | — | Yes |
| 248-291 | ROYAL OAK | 7279 | — | Yes |
| 248-292 | PONTIAC | 7279 | — | Yes |
| 248-293 | AUBURN HTS | 9323 | — | — |
| 248-294 | PONTIAC | 770E | 2013-10-07 | Yes |
| 248-295 | WALLEDLAKE | 7279 | — | Yes |
| 248-296 | PONTIAC | 6003 | 2013-01-11 | Yes |
| 248-297 | CLARKSTON | 6003 | 2013-02-01 | Yes |
| 248-298 | ROYAL OAK | 829J | — | Yes |
| 248-299 | AUBURN HTS | 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.