MCI WORLDCOM COMMUNICATIONS, INC. - FL
35 prefixes in 813 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 813-261 | TAMPA | 7448 | 2004-03-11 | — |
| 813-262 | TAMPA | 7448 | — | — |
| 813-280 | TAMPACEN | 7448 | 2011-06-15 | Yes |
| 813-319 | TAMPACEN | 7448 | — | — |
| 813-322 | ZEPHYRHILS | 7448 | — | Yes |
| 813-349 | TAMPA | 7448 | — | — |
| 813-371 | TAMPA | 7448 | — | — |
| 813-383 | TAMPA | 7448 | — | — |
| 813-385 | TAMPA | 7448 | — | Yes |
| 813-432 | TAMPACEN | 7448 | — | — |
| 813-472 | TAMPA | 7448 | — | Yes |
| 813-473 | PLANT CITY | 7448 | — | Yes |
| 813-482 | TAMPANTH | 7448 | — | Yes |
| 813-487 | TAMPA | 7448 | — | — |
| 813-501 | TAMPANTH | 7448 | 2010-12-13 | Yes |
| 813-567 | PLANT CITY | 7448 | — | Yes |
| 813-569 | TAMPA | 7448 | — | Yes |
| 813-603 | TAMPAEST | 7448 | 2014-03-31 | Yes |
| 813-604 | TAMPACEN | 7448 | — | — |
| 813-617 | TAMPACEN | 7448 | — | Yes |
| 813-660 | TAMPACEN | 7448 | — | Yes |
| 813-675 | TAMPA | 7448 | — | Yes |
| 813-703 | PLANT CITY | 7448 | — | Yes |
| 813-745 | TAMPA | 7448 | — | — |
| 813-746 | TAMPA | 7448 | — | — |
| 813-775 | TAMPA | 7448 | — | Yes |
| 813-778 | ZEPHYRHILS | 7448 | — | Yes |
| 813-821 | TAMPACEN | 7448 | 2021-05-17 | Yes |
| 813-829 | TAMPA | 7448 | — | Yes |
| 813-844 | TAMPACEN | 7448 | — | — |
| 813-856 | PLANT CITY | 7448 | — | Yes |
| 813-862 | ZEPHYRHILS | 7448 | — | Yes |
| 813-864 | TAMPA | 7448 | — | — |
| 813-906 | TAMPACEN | 7448 | 2015-03-03 | Yes |
| 813-974 | TAMPACEN | 7448 | — | — |
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.