TELEPORT COMMUNICATIONS AMERICA, LLC - MI
18 prefixes in 313 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 313-202 | DETROITZN1 | 770E | — | Yes |
| 313-203 | DETROITZN6 | 770E | — | Yes |
| 313-324 | DETROITZN1 | 770E | — | Yes |
| 313-351 | DETROITZN3 | 770E | 2018-09-26 | Yes |
| 313-360 | DETROITZN1 | 770E | 2021-11-05 | Yes |
| 313-429 | DETROITZN6 | 770E | — | Yes |
| 313-437 | DETROITZN4 | 770E | 2010-03-19 | Yes |
| 313-463 | DETROITZN1 | 770E | — | Yes |
| 313-465 | DETROITZN1 | 770E | — | Yes |
| 313-490 | DETROITZN6 | 770E | 2021-11-18 | Yes |
| 313-546 | DETROITZN1 | 770E | 2020-07-02 | Yes |
| 313-678 | DETROITZN2 | 770E | 2020-08-17 | Yes |
| 313-739 | DETROITZN4 | 770E | — | Yes |
| 313-756 | DETROITZN1 | 770E | 2020-11-17 | Yes |
| 313-774 | DETROITZN1 | 770E | 2019-03-14 | Yes |
| 313-778 | DETROITZN5 | 770E | — | Yes |
| 313-825 | DETROITZN2 | 770E | — | Yes |
| 313-826 | DETROITZN3 | 770E | — | 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.