Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
BOSTON prefixes in area code 857
NANPA records 152 assigned NXX blocks to rate center BOSTON in area code 857, 42.1% of the 361 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 35 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA (45), OMNIPOINT MIAMI E LICENSE, LLC (22), METROPCS, INC. (16). The earliest assignment on record here is 2001-03-19 and the most recent 2026-06-30. 147 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 229, 617, 716 – overlay codes cover the same geography, so a rate center is served by all of them.
152 assigned blocks – 42.1% of 857
35 holders of record
147 of them pooled in 1,000-number lots
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 857-200 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2011-01-10 | yes | yes |
| 857-202 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2011-11-10 | yes | yes |
| 857-204 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2001-03-20 | yes | yes |
| 857-205 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2001-03-19 | no | yes |
| 857-206 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2011-10-07 | yes | yes |
| 857-207 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2007-04-11 | yes | yes |
| 857-208 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2012-02-08 | yes | yes |
| 857-210 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2011-03-10 | yes | yes |
| 857-213 | Windstream PAETEC ITEL, LLC | 2011-10-03 | yes | yes |
| 857-214 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2011-12-06 | yes | yes |
| 857-221 | T-Mobile METROPCS, INC. | 2005-05-25 | yes | yes |
| 857-222 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2001-05-17 | no | yes |
| 857-223 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 857-224 | Verizon VERIZON NEW ENGLAND INC. | 2009-12-17 | yes | yes |
| 857-233 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2006-02-16 | yes | yes |
| 857-236 | T-Mobile METROPCS, INC. | 2008-08-04 | yes | yes |
| 857-237 | T-Mobile METROPCS, INC. | 2009-06-08 | yes | yes |
| 857-238 | Verizon VERIZON NEW ENGLAND INC. | 2007-11-14 | yes | yes |
| 857-239 | Onvoy ONVOY, LLC - MA | – | yes | yes |
| 857-241 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MA | 2006-10-24 | yes | yes |
| 857-243 | Onvoy ONVOY, LLC - MA | 2009-11-05 | yes | yes |
| 857-244 | Bandwidth BANDWIDTH.COM CLEC, LLC - MA | 2008-06-10 | yes | yes |
| 857-246 | T-Mobile METROPCS, INC. | – | yes | yes |
| 857-247 | T-Mobile METROPCS, INC. | 2009-06-08 | yes | yes |
| 857-248 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2012-03-08 | yes | yes |
| 857-249 | T-Mobile METROPCS, INC. | 2008-08-04 | yes | yes |
| 857-250 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2011-07-15 | yes | yes |
| 857-251 | T-Mobile METROPCS, INC. | 2008-08-04 | yes | yes |
| 857-254 | Windstream PAETEC ITEL, LLC | 2001-04-23 | yes | yes |
| 857-258 | T-Mobile METROPCS, INC. | 2010-06-25 | yes | yes |
| 857-260 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2012-03-08 | yes | yes |
| 857-261 | T-Mobile METROPCS, INC. | 2011-02-22 | yes | yes |
| 857-262 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2015-09-03 | yes | yes |
| 857-263 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2011-07-12 | yes | yes |
| 857-264 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2010-09-21 | yes | yes |
| 857-265 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2011-07-12 | yes | yes |
| 857-266 | T-Mobile METROPCS, INC. | 2010-06-10 | yes | yes |
| 857-268 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2011-09-08 | yes | yes |
| 857-272 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2006-03-01 | yes | yes |
| 857-274 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2016-01-29 | yes | yes |
| 857-275 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2015-07-01 | yes | yes |
| 857-276 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2015-08-17 | yes | yes |
| 857-277 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2006-01-03 | yes | yes |
| 857-278 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2015-07-01 | yes | yes |
| 857-282 | Verizon VERIZON NEW ENGLAND INC. | 2015-11-04 | yes | yes |
| 857-283 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2017-04-27 | yes | yes |
| 857-284 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2008-01-15 | yes | yes |
| 857-286 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2017-04-28 | yes | yes |
| 857-287 | T-Mobile METROPCS, INC. | 2017-01-31 | yes | yes |
| 857-288 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 2006-08-01 | yes | yes |
| 857-289 | Onvoy ONVOY, LLC - MA | 2017-05-01 | yes | yes |
| 857-291 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2017-08-07 | yes | yes |
| 857-292 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2017-08-08 | yes | yes |
| 857-294 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2007-05-11 | yes | yes |
| 857-295 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2017-08-08 | yes | yes |
| 857-296 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MA | 2017-08-16 | yes | yes |
| 857-300 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2010-10-08 | yes | yes |
| 857-301 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2012-12-06 | yes | yes |
| 857-302 | AIRUS, INC. - MA | 2014-08-04 | yes | yes |
| 857-303 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2012-11-08 | yes | yes |
| 857-305 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MA | 2013-07-19 | yes | yes |
| 857-306 | Lumen CENTURYLINK COMMUNICATIONS, LLC | 2017-10-17 | yes | yes |
| 857-310 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2014-10-14 | yes | yes |
| 857-312 | T-Mobile METROPCS, INC. | 2008-08-04 | yes | yes |
| 857-313 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2012-10-23 | yes | yes |
| 857-315 | Lumen CENTURYLINK COMMUNICATIONS, LLC | 2017-10-17 | yes | yes |
| 857-317 | Lumen CENTURYLINK COMMUNICATIONS, LLC | 2013-03-07 | yes | yes |
| 857-318 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 2007-10-17 | yes | yes |
| 857-319 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2015-06-04 | yes | yes |
| 857-321 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2011-03-10 | yes | yes |
| 857-324 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2017-12-06 | yes | yes |
| 857-326 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2017-12-06 | yes | yes |
| 857-327 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2015-02-02 | yes | yes |
| 857-328 | VoIP Innovations VOIP INNOVATIONS, LLC | 2019-06-25 | yes | yes |
| 857-329 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2017-12-29 | yes | yes |
| 857-330 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2014-10-01 | yes | yes |
| 857-332 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2018-01-15 | yes | yes |
| 857-333 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2010-11-09 | yes | yes |
| 857-334 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2006-09-20 | yes | yes |
| 857-335 | CSC WIRELESS, LLC | 2019-06-06 | yes | yes |
| 857-338 | AT&T TC SYSTEMS, INC. | 2018-01-25 | yes | yes |
| 857-343 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2018-02-13 | yes | yes |
| 857-346 | TELENGY LLC | 2018-05-23 | yes | yes |
| 857-347 | ADVANCED TELECOM SOLUTIONS, LLC | 2018-07-13 | yes | yes |
| 857-348 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | – | yes | yes |
| 857-350 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2007-06-18 | yes | yes |
| 857-353 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 2020-01-06 | yes | yes |
| 857-354 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2018-11-21 | yes | yes |
| 857-356 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2019-10-11 | yes | yes |
| 857-360 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2015-10-07 | yes | yes |
| 857-362 | Verizon VERIZON NEW ENGLAND INC. | 2006-07-19 | yes | yes |
| 857-365 | NUSO, LLC | 2020-05-29 | yes | yes |
| 857-366 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2006-03-15 | yes | yes |
| 857-368 | Windstream PAETEC ITEL, LLC | 2011-08-02 | yes | yes |
| 857-369 | Peerless PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 2020-12-21 | yes | yes |
| 857-377 | Windstream PAETEC ITEL, LLC | 2014-04-09 | yes | yes |
| 857-378 | Verizon VERIZON NEW ENGLAND INC. | 2017-02-01 | yes | yes |
| 857-383 | AT&T TC SYSTEMS, INC. | 2005-11-01 | yes | yes |
| 857-393 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2017-01-23 | yes | yes |
| 857-400 | Bandwidth BANDWIDTH.COM CLEC, LLC - MA | 2010-11-03 | yes | yes |
| 857-406 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2015-11-16 | yes | yes |
| 857-408 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2015-11-25 | yes | yes |
| 857-409 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2016-09-21 | yes | yes |
| 857-413 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MA | 2005-09-19 | yes | yes |
| 857-415 | Vonage VONAGE AMERICA LLC | 2013-07-03 | yes | yes |
| 857-416 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2022-11-17 | yes | yes |
| 857-417 | T-Mobile METROPCS, INC. | 2008-08-04 | yes | yes |
| 857-427 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2024-11-01 | yes | yes |
| 857-430 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2024-11-13 | yes | yes |
| 857-431 | WAVENATION, LLC | 2025-07-10 | yes | yes |
| 857-433 | SHELCOMM | 2026-05-04 | no | yes |
| 857-443 | COMMIO, LLC | 2017-05-22 | yes | yes |
| 857-444 | Peerless PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 2010-11-22 | yes | yes |
| 857-445 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2006-03-21 | yes | yes |
| 857-449 | Comcast COMCAST IP PHONE, LLC | 2002-04-02 | no | yes |
| 857-453 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MA | 2005-05-19 | yes | yes |
| 857-465 | FRACTEL, LLC | 2020-05-08 | yes | yes |
| 857-472 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2001-12-17 | yes | yes |
| 857-488 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2005-09-13 | yes | yes |
| 857-491 | LIGHTPATH OF NEW ENGLAND | 2021-09-23 | yes | yes |
| 857-504 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MA | – | yes | yes |
| 857-505 | T-Mobile METROPCS, INC. | 2016-09-21 | yes | yes |
| 857-507 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2016-09-21 | yes | yes |
| 857-557 | HD CARRIER LLC | 2019-08-27 | yes | yes |
| 857-579 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2025-01-07 | yes | yes |
| 857-615 | T-Mobile METROPCS, INC. | 2009-06-11 | yes | yes |
| 857-654 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2006-10-17 | yes | yes |
| 857-656 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2024-11-21 | yes | yes |
| 857-702 | NUSO, LLC | 2014-02-07 | yes | yes |
| 857-753 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2005-08-09 | yes | yes |
| 857-758 | FRACTEL, LLC | 2021-04-27 | yes | yes |
| 857-762 | T-Mobile METROPCS, INC. | 2016-07-18 | yes | yes |
| 857-763 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2016-07-22 | yes | yes |
| 857-767 | TON80 COMMUNICATIONS, LLC | 2022-01-07 | yes | yes |
| 857-770 | INTRADO COMMUNICATIONS, LLC | 2014-12-23 | yes | yes |
| 857-772 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2016-07-27 | yes | yes |
| 857-788 | SKYE TELECOM LLC DBA SKYETEL | 2021-08-20 | yes | yes |
| 857-800 | Onvoy ONVOY, LLC - MA | 2015-03-20 | yes | yes |
| 857-810 | Onvoy ONVOY, LLC - MA | 2021-03-11 | yes | yes |
| 857-855 | Onvoy ONVOY, LLC - MA | 2021-01-25 | yes | yes |
| 857-869 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2007-07-23 | yes | yes |
| 857-880 | BARR TELL USA, INC. - MA | 2015-11-23 | yes | yes |
| 857-881 | 8x8 8X8, INC. | 2026-06-30 | yes | no |
| 857-891 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2001-04-02 | no | yes |
| 857-895 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 2017-02-02 | yes | yes |
| 857-930 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2014-06-10 | yes | yes |
| 857-944 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2024-11-12 | yes | yes |
| 857-957 | WIDE VOICE, LLC - MA | 2014-09-30 | yes | yes |
| 857-972 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MA | 2015-07-29 | yes | yes |
| 857-990 | EVOLVE CELLULAR, INC. | 2015-09-22 | yes | yes |
| 857-991 | Comcast COMCAST IP PHONE, LLC | 2001-06-19 | yes | yes |
| 857-996 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.
Who holds the blocks
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | Verizon | 45 | 29.6% |
| OMNIPOINT MIAMI E LICENSE, LLC | T-Mobile | 22 | 14.5% |
| METROPCS, INC. | T-Mobile | 16 | 10.5% |
| NEW CINGULAR WIRELESS PCS, LLC - DC | AT&T | 8 | 5.3% |
| LEVEL 3 COMMUNICATIONS, LLC - MA | Lumen | 7 | 4.6% |
| ONVOY, LLC - MA | Onvoy | 6 | 3.9% |
| PAETEC ITEL, LLC | Windstream | 5 | 3.3% |
| VERIZON NEW ENGLAND INC. | Verizon | 5 | 3.3% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 4 | 2.6% |
| CENTURYLINK COMMUNICATIONS, LLC | Lumen | 3 | 2% |
| BANDWIDTH.COM CLEC, LLC - MA | Bandwidth | 2 | 1.3% |
| TC SYSTEMS, INC. | AT&T | 2 | 1.3% |
| NUSO, LLC | – | 2 | 1.3% |
| PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | Peerless | 2 | 1.3% |
| COMCAST IP PHONE, LLC | Comcast | 2 | 1.3% |
| FRACTEL, LLC | – | 2 | 1.3% |
| AIRUS, INC. - MA | – | 1 | 0.7% |
| VOIP INNOVATIONS, LLC | VoIP Innovations | 1 | 0.7% |
| CSC WIRELESS, LLC | – | 1 | 0.7% |
| TELENGY LLC | – | 1 | 0.7% |
| ADVANCED TELECOM SOLUTIONS, LLC | – | 1 | 0.7% |
| VONAGE AMERICA LLC | Vonage | 1 | 0.7% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 1 | 0.7% |
| WAVENATION, LLC | – | 1 | 0.7% |
| SHELCOMM | – | 1 | 0.7% |
| COMMIO, LLC | – | 1 | 0.7% |
| LIGHTPATH OF NEW ENGLAND | – | 1 | 0.7% |
| HD CARRIER LLC | – | 1 | 0.7% |
| TON80 COMMUNICATIONS, LLC | – | 1 | 0.7% |
| INTRADO COMMUNICATIONS, LLC | – | 1 | 0.7% |
| SKYE TELECOM LLC DBA SKYETEL | – | 1 | 0.7% |
| BARR TELL USA, INC. - MA | – | 1 | 0.7% |
| 8X8, INC. | 8x8 | 1 | 0.7% |
| WIDE VOICE, LLC - MA | – | 1 | 0.7% |
| EVOLVE CELLULAR, INC. | – | 1 | 0.7% |
Same rate center in other codes
Overlay codes cover the same geography, so one rate center is served by all of them.
Frequently asked
Which prefixes belong to BOSTON in area code 857?
152 blocks: 200, 202, 204, 205, 206, 207, 208, 210, 213, 214, 221, 222 and 140 more, all listed in the table above.
Which carriers have numbers in BOSTON?
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA (45 blocks), OMNIPOINT MIAMI E LICENSE, LLC (22 blocks), METROPCS, INC. (16 blocks), NEW CINGULAR WIRELESS PCS, LLC - DC (8 blocks), LEVEL 3 COMMUNICATIONS, LLC - MA (7 blocks), ONVOY, LLC - MA (6 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is BOSTON a city?
It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.