MICHIGAN BELL TEL CO
244 prefixes in 313 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 313-883 | DETROITZN3 | 9323 | — | Yes |
| 313-884 | DETROITZN2 | 9323 | — | — |
| 313-885 | DETROITZN2 | 9323 | — | — |
| 313-886 | DETROITZN2 | 9323 | — | — |
| 313-891 | DETROITZN3 | 9323 | — | — |
| 313-892 | DETROITZN3 | 9323 | — | — |
| 313-893 | DETROITZN3 | 9323 | — | — |
| 313-894 | DETROITZN1 | 9323 | — | — |
| 313-895 | DETROITZN1 | 9323 | — | Yes |
| 313-896 | DETROITZN1 | 9323 | — | Yes |
| 313-897 | DETROITZN1 | 9323 | — | — |
| 313-898 | DETROITZN1 | 9323 | — | Yes |
| 313-899 | DETROITZN1 | 9323 | — | Yes |
| 313-916 | DETROITZN1 | 9323 | — | — |
| 313-921 | DETROITZN2 | 9323 | — | Yes |
| 313-922 | DETROITZN2 | 9323 | — | Yes |
| 313-923 | DETROITZN2 | 9323 | — | Yes |
| 313-924 | DETROITZN2 | 9323 | — | Yes |
| 313-925 | DETROITZN2 | 9323 | — | Yes |
| 313-926 | DETROITZN2 | 9323 | — | Yes |
| 313-927 | DETROITZN4 | 9323 | — | Yes |
| 313-928 | DETROITZN6 | 9323 | — | — |
| 313-931 | DETROITZN4 | 9323 | — | — |
| 313-933 | DETROITZN4 | 9323 | — | — |
| 313-934 | DETROITZN4 | 9323 | — | Yes |
| 313-935 | DETROITZN4 | 9323 | — | Yes |
| 313-937 | DETROITZN5 | 9323 | — | Yes |
| 313-943 | DETROITZN6 | 9323 | — | — |
| 313-945 | DETROITZN6 | 9323 | — | — |
| 313-956 | DETROITZN3 | 9323 | — | — |
| 313-957 | DETROITZN3 | 9323 | — | Yes |
| 313-961 | DETROITZN1 | 9323 | — | — |
| 313-962 | DETROITZN1 | 9323 | — | — |
| 313-963 | DETROITZN1 | 9323 | — | — |
| 313-964 | DETROITZN1 | 9323 | — | — |
| 313-965 | DETROITZN1 | 9323 | — | — |
| 313-966 | DETROITZN1 | 9323 | — | — |
| 313-967 | DETROITZN1 | 9323 | — | — |
| 313-972 | DETROITZN1 | 9323 | — | — |
| 313-974 | DETROITZN1 | 9323 | — | Yes |
| 313-982 | DETROITZN6 | 9323 | — | Yes |
| 313-983 | DETROITZN1 | 9323 | — | Yes |
| 313-993 | DETROITZN1 | 9323 | — | — |
| 313-996 | DETROITZN6 | 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.