MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA
32 prefixes in 858 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 858-227 | RNCHOSANFE | 7240 | — | Yes |
| 858-228 | LA JOLLA | 7240 | — | Yes |
| 858-244 | SNDG LVTA | 7240 | — | Yes |
| 858-348 | SNDG MRMS | 7240 | — | Yes |
| 858-352 | LA JOLLA | 7240 | — | Yes |
| 858-362 | LA JOLLA | 7240 | — | — |
| 858-366 | LA JOLLA | 7240 | — | Yes |
| 858-373 | LA JOLLA | 7240 | — | Yes |
| 858-408 | SNDG MRMS | 7240 | — | Yes |
| 858-410 | LA JOLLA | 7240 | — | — |
| 858-430 | SNDG LVTA | 7240 | — | Yes |
| 858-434 | RNCHOPNQTS | 7240 | — | Yes |
| 858-609 | SNDG LVTA | 7240 | — | Yes |
| 858-703 | DEL MAR | 7240 | — | Yes |
| 858-704 | DEL MAR | 7240 | — | Yes |
| 858-712 | SNDG LVTA | 7240 | — | — |
| 858-716 | RNCHOBRNDO | 7240 | — | Yes |
| 858-724 | DEL MAR | 7240 | — | Yes |
| 858-726 | POWAY | 7240 | — | Yes |
| 858-731 | LA JOLLA | 7240 | — | Yes |
| 858-737 | SNDG LVTA | 7240 | — | Yes |
| 858-753 | RNCHOBRNDO | 7240 | — | Yes |
| 858-799 | LA JOLLA | 7240 | — | Yes |
| 858-836 | SNDG LVTA | 7240 | — | Yes |
| 858-859 | POWAY | 7240 | — | Yes |
| 858-877 | SNDG MRMS | 7240 | — | Yes |
| 858-879 | RNCHOBRNDO | 7240 | — | Yes |
| 858-880 | SNDG MRMS | 7240 | — | Yes |
| 858-901 | RNCHOPNQTS | 7240 | — | Yes |
| 858-905 | RNCHOPNQTS | 7240 | — | Yes |
| 858-935 | SNDG MRMS | 7240 | — | Yes |
| 858-946 | RNCHOBRNDO | 7240 | — | 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.