MCIMETRO ACCESS TRANSMISSION SERVICES LLC
10 prefixes in 771 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 771-214 | WSHNGTNZN1 | 7229 | 2022-07-08 | Yes |
| 771-215 | WSHNGTNZN1 | 7229 | 2022-08-30 | Yes |
| 771-221 | WSHNGTNZN1 | 7229 | 2023-01-11 | Yes |
| 771-225 | WSHNGTNZN1 | 7229 | 2023-04-06 | Yes |
| 771-226 | WSHNGTNZN1 | 7229 | 2023-04-06 | Yes |
| 771-227 | WSHNGTNZN1 | 7229 | 2023-04-06 | Yes |
| 771-228 | WSHNGTNZN1 | 7229 | 2023-04-06 | Yes |
| 771-229 | WSHNGTNZN1 | 7229 | 2023-04-10 | Yes |
| 771-230 | WSHNGTNZN1 | 7229 | 2023-04-06 | Yes |
| 771-231 | WSHNGTNZN1 | 7229 | 2023-04-06 | 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.