Area Codes > 248 > Central Office Codes
| Exchange | Rate Center | State | Operating Company |
|---|---|---|---|
| 248-992 | ROYAL OAK | MI | AMERICAN MESSAGING (AM), INC. |
| 248-993 | PONTIAC | MI | INSTANT PAGE, INC. |
| 248-994 | FARMINGTON | MI | AMERITECH MICHIGAN |
| 248-995 | ROYAL OAK | MI | AMERICAN MESSAGING (AM), INC. |
| 248-996 | SOUTHFIELD | MI | CMC TELECOM, INC. - MI |
| 248-997 | AUBURN HTS | MI | BROADWING COMMUNICATIONS, LLC - MI |
| 248-998 | ROYAL OAK | MI | AMERICAN MESSAGING (AM), INC. |
| 248-999 | MI |