METROPCS, INC.
25 prefixes in 857 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 857-201 | WINTHROP | 5562 | 2002-10-28 | Yes |
| 857-212 | DORCHESTER | 5562 | 2001-04-23 | Yes |
| 857-217 | DORCHESTER | 5562 | 2001-06-29 | Yes |
| 857-221 | BOSTON | 5562 | 2005-05-25 | Yes |
| 857-231 | NEWTON | 5562 | 2002-07-30 | Yes |
| 857-236 | BOSTON | 5562 | 2008-08-04 | Yes |
| 857-237 | BOSTON | 5562 | 2009-06-08 | Yes |
| 857-246 | BOSTON | 5562 | — | Yes |
| 857-247 | BOSTON | 5562 | 2009-06-08 | Yes |
| 857-249 | BOSTON | 5562 | 2008-08-04 | Yes |
| 857-251 | BOSTON | 5562 | 2008-08-04 | Yes |
| 857-257 | SO BOSTON | 5562 | 2001-04-20 | Yes |
| 857-258 | BOSTON | 5562 | 2010-06-25 | Yes |
| 857-261 | BOSTON | 5562 | 2011-02-22 | Yes |
| 857-266 | BOSTON | 5562 | 2010-06-10 | Yes |
| 857-287 | BOSTON | 5562 | 2017-01-31 | Yes |
| 857-312 | BOSTON | 5562 | 2008-08-04 | Yes |
| 857-417 | BOSTON | 5562 | 2008-08-04 | Yes |
| 857-505 | BOSTON | 5562 | 2016-09-21 | Yes |
| 857-526 | QUINCY | 5562 | 2002-07-30 | Yes |
| 857-615 | BOSTON | 5562 | 2009-06-11 | Yes |
| 857-719 | JAMAICA PL | 5562 | 2002-07-30 | Yes |
| 857-762 | BOSTON | 5562 | 2016-07-18 | Yes |
| 857-773 | JAMAICA PL | 5562 | 2016-09-12 | Yes |
| 857-888 | EVERETT | 5562 | 2002-07-30 | 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.