Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 617 prefixes
768 of the 786 possible NXX blocks are assigned in area code 617 (97.7% of capacity), spread across 27 rate centers and 24 holders. The largest holders are VERIZON NEW ENGLAND INC. (326 blocks, 42.4%), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (71 blocks, 9.2%), NEW CINGULAR WIRELESS PCS, LLC - DC (68 blocks, 8.9%). Grouped by brand, Verizon accounts for 435 blocks; brand-attributable holders cover 95% of the code, and the rest are CLECs, VoIP wholesalers and regional carriers that trade under their own names. The assignment records here run from 2001-02-14 to 2025-03-18, with 25 blocks handed out in 2001 alone. 401 blocks (52%) are in thousands-block pooling, meaning the block is shared between carriers in 1,000-number lots rather than held whole – which is why a single NXX can serve several carriers at once. 57 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
768 assigned blocks of 786
27 rate centers
24 holders of record
52% in thousands-block pooling
Largest holders in 617
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| VERIZON NEW ENGLAND INC. | Verizon | 326 | 42.4% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 71 | 9.2% |
| NEW CINGULAR WIRELESS PCS, LLC - DC | AT&T | 68 | 8.9% |
| PAETEC ITEL, LLC | Windstream | 44 | 5.7% |
| TC SYSTEMS, INC. | AT&T | 41 | 5.3% |
| LEVEL 3 COMMUNICATIONS, LLC - MA | Lumen | 39 | 5.1% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | Verizon | 38 | 4.9% |
| OMNIPOINT MIAMI E LICENSE, LLC | T-Mobile | 32 | 4.2% |
| METROPCS, INC. | T-Mobile | 26 | 3.4% |
| RCN TELECOM SERVICES, INC. - MA | – | 19 | 2.5% |
| BANDWIDTH.COM CLEC, LLC - MA | Bandwidth | 17 | 2.2% |
| ONVOY, LLC - MA | Onvoy | 12 | 1.6% |
Names are printed as they appear in the assignment records, which is the legal entity rather than the brand. Holding a block is not the same as serving the numbers in it: portability moves numbers between carriers and pooling splits a block between several.
Rate centers with their own page
Rate centers where at least three blocks are assigned, excluding the numbered metro zone codes. The remainder are in the full table below.
All 768 assigned blocks
One row per NXX. “Pooled” means carriers draw 1,000-number lots from the block rather than holding all 10,000, so a pooled prefix can belong to several carriers at once. “Not in service” means assigned but not yet open for calls – a caller ID from one of those is necessarily spoofed. The holder column gives the brand where the legal entity maps to one; the full legal names are in the holders table above, exactly as NANPA records them.
| Prefix | Holder of record | Rate center | Assigned | Pooled | In service |
|---|---|---|---|---|---|
| 617-201 | T-Mobile | CAMBRIDGE | 2001-02-14 | yes | yes |
| 617-202 | Windstream | BRIGHTON | – | yes | yes |
| 617-203 | Verizon | EVERETT | – | yes | yes |
| 617-204 | Verizon | BOSTON | – | – | yes |
| 617-205 | NORFOLK COUNTY INTERNET, INC. | BOSTON | – | – | yes |
| 617-206 | Verizon | BRIGHTON | – | yes | yes |
| 617-207 | Comcast | WINTHROP | – | yes | yes |
| 617-208 | Verizon | BRIGHTON | – | yes | yes |
| 617-209 | RCN TELECOM SERVICES, INC. - MA | BELMONT | – | yes | yes |
| 617-210 | Verizon | BOSTON | – | yes | yes |
| 617-212 | T-Mobile | BOSTON | – | yes | yes |
| 617-213 | Lumen | NEWTON | – | yes | yes |
| 617-214 | Onvoy | JAMAICA PL | 2023-07-18 | yes | yes |
| 617-215 | Verizon | NEWTON | – | – | yes |
| 617-216 | T-Mobile | CAMBRIDGE | – | yes | yes |
| 617-217 | AT&T | BOSTON | – | yes | yes |
| 617-218 | AT&T | CAMBRIDGE | – | yes | yes |
| 617-219 | Verizon | NEWTON | – | yes | yes |
| 617-221 | Windstream | QUINCY | – | yes | yes |
| 617-222 | Verizon | BOSTON | – | yes | yes |
| 617-223 | Verizon | BOSTON | – | yes | yes |
| 617-224 | Verizon | BOSTON | 2001-11-14 | yes | yes |
| 617-225 | Verizon | CAMBRIDGE | – | – | yes |
| 617-226 | Windstream | BOSTON | – | yes | yes |
| 617-227 | Verizon | BOSTON | – | – | yes |
| 617-228 | Verizon | BOSTON | – | – | yes |
| 617-229 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-230 | T-Mobile | CAMBRIDGE | – | – | yes |
| 617-231 | Lumen | WATERTOWN | – | yes | yes |
| 617-232 | Verizon | BROOKLINE | – | – | yes |
| 617-233 | T-Mobile | CAMBRIDGE | – | yes | yes |
| 617-234 | Verizon | CAMBRIDGE | – | – | yes |
| 617-235 | Verizon | BOSTON | – | – | yes |
| 617-236 | Verizon | BOSTON | – | – | yes |
| 617-237 | RCN TELECOM SERVICES, INC. - MA | QUINCY | – | yes | yes |
| 617-238 | Verizon | ROXBURY | – | yes | yes |
| 617-239 | AT&T | BOSTON | – | yes | yes |
| 617-240 | AT&T | SAUGUS | – | – | yes |
| 617-241 | Verizon | CHARLESTN | – | – | yes |
| 617-242 | Verizon | CHARLESTN | – | – | yes |
| 617-243 | Verizon | NEWTON | – | – | yes |
| 617-244 | Verizon | NEWTON | – | – | yes |
| 617-245 | Lumen | CAMBRIDGE | – | yes | yes |
| 617-246 | Verizon | BOSTON | – | – | yes |
| 617-247 | Verizon | BOSTON | – | – | yes |
| 617-248 | Verizon | BOSTON | – | – | yes |
| 617-249 | Verizon | QUINCY | – | yes | yes |
| 617-250 | AT&T | CAMBRIDGE | – | yes | yes |
| 617-251 | T-Mobile | CAMBRIDGE | 2001-02-14 | yes | yes |
| 617-252 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-253 | Verizon | CAMBRIDGE | – | – | yes |
| 617-254 | Verizon | BRIGHTON | – | – | yes |
| 617-255 | Verizon | BOSTON | – | – | yes |
| 617-256 | T-Mobile | CAMBRIDGE | – | yes | yes |
| 617-257 | AT&T | SAUGUS | – | – | yes |
| 617-258 | Verizon | CAMBRIDGE | – | – | yes |
| 617-259 | T-Mobile | BOSTON | 2004-01-07 | yes | yes |
| 617-261 | Verizon | BOSTON | – | – | yes |
| 617-262 | Verizon | BOSTON | – | – | yes |
| 617-263 | Verizon | BOSTON | – | yes | yes |
| 617-264 | Verizon | BROOKLINE | – | yes | yes |
| 617-265 | Verizon | DORCHESTER | – | – | yes |
| 617-266 | Verizon | BOSTON | – | – | yes |
| 617-267 | Verizon | BOSTON | – | – | yes |
| 617-268 | Verizon | SO BOSTON | – | – | yes |
| 617-269 | Verizon | SO BOSTON | – | – | yes |
| 617-270 | T-Mobile | CHELSEA | 2001-02-14 | yes | yes |
| 617-271 | T-Mobile | EASTBOSTON | 2001-02-14 | yes | yes |
| 617-272 | Onvoy | HYDE PARK | – | yes | yes |
| 617-273 | Lumen | MILTON | – | yes | yes |
| 617-274 | Windstream | BROOKLINE | – | yes | yes |
| 617-275 | Lumen | BOSTON | 2001-12-15 | yes | yes |
| 617-276 | RCN TELECOM SERVICES, INC. - MA | HYDE PARK | – | yes | yes |
| 617-277 | Verizon | BROOKLINE | – | – | yes |
| 617-278 | Verizon | BROOKLINE | – | – | yes |
| 617-279 | Verizon | BOSTON | – | yes | yes |
| 617-280 | NEP, LLC | CAMBRIDGE | 2003-09-29 | – | yes |
| 617-281 | AT&T | WALTHAM | – | – | yes |
| 617-282 | Verizon | DORCHESTER | – | – | yes |
| 617-283 | AT&T | BOSTON | – | – | yes |
| 617-284 | Verizon | SOMERVILLE | – | yes | yes |
| 617-285 | Verizon | SAUGUS | – | – | yes |
| 617-286 | Windstream | CHARLESTN | 2001-02-16 | yes | yes |
| 617-287 | Verizon | DORCHESTER | – | – | yes |
| 617-288 | Verizon | DORCHESTER | – | – | yes |
| 617-289 | Verizon | BOSTON | – | – | yes |
| 617-290 | T-Mobile | CAMBRIDGE | – | yes | yes |
| 617-291 | AT&T | MILTON | – | – | yes |
| 617-292 | Verizon | BOSTON | – | – | yes |
| 617-293 | T-Mobile | BOSTON | – | yes | yes |
| 617-294 | Comcast | EVERETT | – | yes | yes |
| 617-295 | Verizon | BOSTON | – | yes | yes |
| 617-296 | Verizon | MILTON | – | – | yes |
| 617-297 | Lumen | DORCHESTER | – | yes | yes |
| 617-298 | Verizon | MILTON | – | yes | yes |
| 617-299 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-300 | AT&T | CAMBRIDGE | – | yes | yes |
| 617-301 | AT&T | CAMBRIDGE | 2004-07-13 | yes | yes |
| 617-302 | YMAX COMMUNICATIONS CORP. - MA | QUINCY | – | yes | yes |
| 617-303 | FREEDOM RING COMMUNICATIONS, LLC | BOSTON | – | – | yes |
| 617-304 | T-Mobile | BOSTON | 2002-05-08 | yes | yes |
| 617-305 | Verizon | BOSTON | – | – | yes |
| 617-306 | AT&T | BOSTON | – | – | yes |
| 617-307 | Windstream | SO BOSTON | – | yes | yes |
| 617-308 | T-Mobile | CAMBRIDGE | – | yes | yes |
| 617-309 | Windstream | BOSTON | 2004-11-19 | yes | yes |
| 617-310 | Verizon | BOSTON | – | – | yes |
| 617-312 | Verizon | BOSTON | – | – | yes |
| 617-313 | Windstream | MILTON | – | yes | yes |
| 617-314 | Lumen | BOSTON | – | yes | yes |
| 617-315 | Verizon | SO BOSTON | – | yes | yes |
| 617-316 | AT&T | BOSTON | – | – | yes |
| 617-317 | NORFOLK COUNTY INTERNET, INC. | QUINCY | – | – | yes |
| 617-318 | Windstream | ROXBURY | – | yes | yes |
| 617-319 | T-Mobile | BRIGHTON | – | – | yes |
| 617-320 | AT&T | BOSTON | – | – | yes |
| 617-321 | Windstream | WATERTOWN | – | yes | yes |
| 617-322 | Comcast | MILTON | – | yes | yes |
| 617-323 | Verizon | JAMAICA PL | – | – | yes |
| 617-324 | Verizon | CAMBRIDGE | 2002-08-08 | yes | yes |
| 617-325 | Verizon | JAMAICA PL | – | – | yes |
| 617-326 | Verizon | DORCHESTER | – | yes | yes |
| 617-327 | Verizon | JAMAICA PL | – | – | yes |
| 617-328 | Verizon | QUINCY | – | – | yes |
| 617-329 | RCN TELECOM SERVICES, INC. - MA | WINTHROP | – | yes | yes |
| 617-330 | Verizon | BOSTON | – | – | yes |
| 617-331 | T-Mobile | BOSTON | – | – | yes |
| 617-332 | Verizon | NEWTON | – | – | yes |
| 617-333 | Verizon | HYDE PARK | – | yes | yes |
| 617-334 | RCN TELECOM SERVICES, INC. - MA | SO BOSTON | – | yes | yes |
| 617-335 | AT&T | CAMBRIDGE | – | – | yes |
| 617-336 | Windstream | CHELSEA | – | yes | yes |
| 617-337 | RCN TELECOM SERVICES, INC. - MA | CHARLESTN | – | yes | yes |
| 617-338 | Verizon | BOSTON | – | – | yes |
| 617-339 | Verizon | CAMBRIDGE | – | – | yes |
| 617-340 | Windstream | NEWTON | 2001-10-11 | yes | yes |
| 617-341 | Verizon | BOSTON | – | yes | yes |
| 617-342 | Verizon | BOSTON | – | – | yes |
| 617-343 | Verizon | BOSTON | – | – | yes |
| 617-344 | Verizon | JAMAICA PL | – | yes | yes |
| 617-345 | Verizon | BOSTON | – | yes | yes |
| 617-346 | Verizon | BOSTON | – | – | yes |
| 617-347 | AT&T | QUINCY | – | – | yes |
| 617-348 | Verizon | BOSTON | – | – | yes |
| 617-349 | Verizon | CAMBRIDGE | – | – | yes |
| 617-350 | Verizon | BOSTON | – | – | yes |
| 617-351 | Verizon | BOSTON | – | yes | yes |
| 617-352 | Verizon | BOSTON | – | yes | yes |
| 617-353 | Verizon | BOSTON | – | – | yes |
| 617-354 | Verizon | CAMBRIDGE | – | – | yes |
| 617-355 | Verizon | BROOKLINE | – | yes | yes |
| 617-356 | Verizon | BOSTON | – | yes | yes |
| 617-357 | Verizon | BOSTON | – | – | yes |
| 617-358 | Verizon | BOSTON | – | – | yes |
| 617-359 | T-Mobile | CAMBRIDGE | – | yes | yes |
| 617-360 | Verizon | HYDE PARK | – | yes | yes |
| 617-361 | Verizon | HYDE PARK | – | – | yes |
| 617-362 | Bandwidth | HYDE PARK | – | yes | yes |
| 617-363 | Verizon | JAMAICA PL | – | yes | yes |
| 617-364 | Verizon | HYDE PARK | – | – | yes |
| 617-365 | AT&T | DEDHAM | – | – | yes |
| 617-366 | Verizon | BOSTON | 2004-05-06 | yes | yes |
| 617-367 | Verizon | BOSTON | – | – | yes |
| 617-368 | Verizon | BOSTON | – | yes | yes |
| 617-369 | Verizon | BOSTON | – | yes | yes |
| 617-370 | Verizon | CHELSEA | – | yes | yes |
| 617-371 | Verizon | BOSTON | – | yes | yes |
| 617-372 | Verizon | BOSTON | – | yes | yes |
| 617-373 | Verizon | BOSTON | – | yes | yes |
| 617-374 | Verizon | CAMBRIDGE | – | – | yes |
| 617-375 | Verizon | BOSTON | – | yes | yes |
| 617-376 | Verizon | QUINCY | – | yes | yes |
| 617-377 | Verizon | BOSTON | – | yes | yes |
| 617-378 | AT&T | BOSTON | – | yes | yes |
| 617-379 | RCN TELECOM SERVICES, INC. - MA | DORCHESTER | – | yes | yes |
| 617-380 | Lumen | CHARLESTN | – | yes | yes |
| 617-381 | Verizon | EVERETT | – | yes | yes |
| 617-382 | Verizon | EVERETT | – | – | yes |
| 617-383 | Windstream | BROOKLINE | – | yes | yes |
| 617-384 | Verizon | CAMBRIDGE | – | – | yes |
| 617-385 | AT&T | BOSTON | – | – | yes |
| 617-386 | AT&T | CAMBRIDGE | 2001-12-15 | yes | yes |
| 617-387 | Verizon | EVERETT | – | – | yes |
| 617-388 | T-Mobile | CAMBRIDGE | – | yes | yes |
| 617-389 | Verizon | EVERETT | – | – | yes |
| 617-390 | Verizon | JAMAICA PL | – | yes | yes |
| 617-391 | Windstream | BOSTON | 2008-04-30 | yes | yes |
| 617-392 | AT&T | BOSTON | – | – | yes |
| 617-393 | RCN TELECOM SERVICES, INC. - MA | WATERTOWN | – | yes | yes |
| 617-394 | Verizon | EVERETT | – | yes | yes |
| 617-395 | Lumen | CAMBRIDGE | – | yes | yes |
| 617-396 | AT&T | BROOKLINE | – | yes | yes |
| 617-397 | AT&T | CAMBRIDGE | – | yes | yes |
| 617-398 | Bandwidth | CHARLESTN | – | yes | yes |
| 617-399 | Verizon | BOSTON | – | – | yes |
| 617-400 | NORFOLK COUNTY INTERNET, INC. | ROXBURY | – | – | yes |
| 617-401 | Lumen | CAMBRIDGE | – | yes | yes |
| 617-402 | Peerless | WATERTOWN | – | yes | yes |
| 617-403 | American Messaging | BRIGHTON | – | – | yes |
| 617-404 | Onvoy | QUINCY | 2017-12-28 | yes | yes |
| 617-405 | Verizon | QUINCY | – | yes | yes |
| 617-406 | AT&T | BOSTON | – | yes | yes |
| 617-407 | T-Mobile | BOSTON | – | – | yes |
| 617-408 | Verizon | HYDE PARK | – | yes | yes |
| 617-409 | Windstream | CHELSEA | 2001-02-16 | yes | yes |
| 617-410 | Windstream | EVERETT | 2001-02-16 | yes | yes |
| 617-412 | T-Mobile | BOSTON | 2005-04-11 | yes | yes |
| 617-413 | Verizon | BOSTON | – | – | yes |
| 617-414 | Verizon | BOSTON | – | – | yes |
| 617-415 | Verizon | BRIGHTON | – | yes | yes |
| 617-416 | AT&T | BOSTON | 2001-02-16 | – | yes |
| 617-417 | AT&T | CAMBRIDGE | 2001-02-16 | yes | yes |
| 617-418 | Verizon | EASTBOSTON | – | yes | yes |
| 617-419 | Bandwidth | BOSTON | 2009-10-16 | yes | yes |
| 617-420 | Verizon | EVERETT | – | yes | yes |
| 617-421 | Verizon | BOSTON | – | – | yes |
| 617-422 | Verizon | BOSTON | – | yes | yes |
| 617-423 | Verizon | BOSTON | – | – | yes |
| 617-424 | Verizon | BOSTON | – | – | yes |
| 617-425 | Verizon | BOSTON | – | – | yes |
| 617-426 | Verizon | BOSTON | – | – | yes |
| 617-427 | Verizon | ROXBURY | – | – | yes |
| 617-428 | Verizon | BOSTON | – | – | yes |
| 617-429 | Verizon | BOSTON | – | – | yes |
| 617-430 | Bandwidth | CAMBRIDGE | – | yes | yes |
| 617-431 | AT&T | NEWTON | – | yes | yes |
| 617-432 | Verizon | BROOKLINE | – | – | yes |
| 617-433 | AT&T | MILTON | – | yes | yes |
| 617-434 | Verizon | BOSTON | – | – | yes |
| 617-435 | AT&T | JAMAICA PL | – | – | yes |
| 617-436 | Verizon | DORCHESTER | – | – | yes |
| 617-437 | Verizon | BOSTON | – | – | yes |
| 617-438 | T-Mobile | BOSTON | – | yes | yes |
| 617-439 | Verizon | BOSTON | – | – | yes |
| 617-440 | Windstream | SOMERVILLE | – | yes | yes |
| 617-441 | Verizon | CAMBRIDGE | – | – | yes |
| 617-442 | Verizon | ROXBURY | – | – | yes |
| 617-443 | Verizon | BOSTON | – | – | yes |
| 617-444 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-445 | Verizon | ROXBURY | – | – | yes |
| 617-446 | Verizon | DORCHESTER | – | yes | yes |
| 617-447 | Verizon | BOSTON | 2004-06-11 | yes | yes |
| 617-448 | Verizon | BOSTON | – | – | yes |
| 617-449 | Verizon | BOSTON | – | yes | yes |
| 617-450 | Verizon | BOSTON | – | – | yes |
| 617-451 | Verizon | BOSTON | – | – | yes |
| 617-452 | Verizon | CAMBRIDGE | – | – | yes |
| 617-453 | Bandwidth | CAMBRIDGE | – | yes | yes |
| 617-454 | AT&T | NEWTON | – | yes | yes |
| 617-455 | Windstream | EASTBOSTON | – | yes | yes |
| 617-456 | Windstream | BOSTON | – | – | yes |
| 617-457 | Verizon | BOSTON | – | yes | yes |
| 617-458 | T-Mobile | WATERTOWN | 2002-07-31 | yes | yes |
| 617-459 | T-Mobile | BOSTON | 2004-11-23 | yes | yes |
| 617-460 | AT&T | CAMBRIDGE | – | yes | yes |
| 617-461 | T-Mobile | CHELSEA | – | yes | yes |
| 617-462 | AT&T | DEDHAM | – | – | yes |
| 617-463 | Verizon | SO BOSTON | – | yes | yes |
| 617-464 | Verizon | SO BOSTON | – | yes | yes |
| 617-465 | Bandwidth | CAMBRIDGE | – | yes | yes |
| 617-466 | Comcast | CHELSEA | – | yes | yes |
| 617-467 | Windstream | NEWTON | – | yes | yes |
| 617-468 | Bandwidth | CAMBRIDGE | – | yes | yes |
| 617-469 | Verizon | JAMAICA PL | – | – | yes |
| 617-470 | AT&T | BOSTON | – | – | yes |
| 617-471 | Verizon | QUINCY | – | – | yes |
| 617-472 | Verizon | QUINCY | – | – | yes |
| 617-473 | Verizon | NEWTON | – | – | yes |
| 617-474 | Verizon | DORCHESTER | – | yes | yes |
| 617-475 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-476 | AT&T | BOSTON | – | – | yes |
| 617-477 | Verizon | JAMAICA PL | 2001-12-06 | yes | yes |
| 617-478 | Verizon | BOSTON | – | – | yes |
| 617-479 | Verizon | QUINCY | – | – | yes |
| 617-480 | AT&T | BOSTON | – | – | yes |
| 617-481 | Comcast | QUINCY | – | yes | yes |
| 617-482 | Verizon | BOSTON | – | – | yes |
| 617-483 | Verizon | QUINCY | – | yes | yes |
| 617-484 | Verizon | BELMONT | – | – | yes |
| 617-485 | Onvoy | NEWTON | – | yes | yes |
| 617-486 | Verizon | BELMONT | – | – | yes |
| 617-487 | AT&T | BROOKLINE | – | yes | yes |
| 617-488 | AT&T | BOSTON | – | yes | yes |
| 617-489 | Verizon | BELMONT | – | – | yes |
| 617-490 | Verizon | BOSTON | – | yes | yes |
| 617-491 | Verizon | CAMBRIDGE | – | – | yes |
| 617-492 | Verizon | CAMBRIDGE | – | – | yes |
| 617-493 | Verizon | CAMBRIDGE | – | – | yes |
| 617-494 | Verizon | CAMBRIDGE | – | – | yes |
| 617-495 | Verizon | CAMBRIDGE | – | – | yes |
| 617-496 | Verizon | CAMBRIDGE | – | – | yes |
| 617-497 | Verizon | CAMBRIDGE | – | – | yes |
| 617-498 | Verizon | CAMBRIDGE | – | – | yes |
| 617-499 | Verizon | CAMBRIDGE | – | – | yes |
| 617-500 | Lumen | CAMBRIDGE | – | yes | yes |
| 617-501 | T-Mobile | SOMERVILLE | – | yes | yes |
| 617-502 | Windstream | BOSTON | – | yes | yes |
| 617-503 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-504 | T-Mobile | BOSTON | – | yes | yes |
| 617-505 | Lumen | BROOKLINE | – | yes | yes |
| 617-506 | Windstream | DORCHESTER | – | yes | yes |
| 617-507 | Verizon | BOSTON | – | yes | yes |
| 617-509 | Verizon | QUINCY | – | – | yes |
| 617-510 | AT&T | BOSTON | – | – | yes |
| 617-512 | Verizon | BOSTON | – | – | yes |
| 617-513 | AT&T | BOSTON | – | – | yes |
| 617-514 | Verizon | DORCHESTER | – | yes | yes |
| 617-515 | AT&T | BOSTON | – | – | yes |
| 617-516 | Verizon | ROXBURY | – | yes | yes |
| 617-517 | Lumen | BOSTON | – | yes | yes |
| 617-518 | Onvoy | CHARLESTN | 2021-07-20 | yes | yes |
| 617-519 | Verizon | BOSTON | – | yes | yes |
| 617-520 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-521 | Verizon | BOSTON | – | – | yes |
| 617-522 | Verizon | JAMAICA PL | – | – | yes |
| 617-523 | Verizon | BOSTON | – | – | yes |
| 617-524 | Verizon | JAMAICA PL | – | – | yes |
| 617-525 | Verizon | BROOKLINE | – | – | yes |
| 617-526 | Verizon | BOSTON | – | – | yes |
| 617-527 | Verizon | NEWTON | – | – | yes |
| 617-528 | AT&T | CAMBRIDGE | – | yes | yes |
| 617-529 | Verizon | SAUGUS | – | – | yes |
| 617-530 | AT&T | BOSTON | – | yes | yes |
| 617-531 | Verizon | BOSTON | – | – | yes |
| 617-532 | Windstream | BOSTON | – | – | yes |
| 617-533 | Verizon | DORCHESTER | – | yes | yes |
| 617-534 | Verizon | BOSTON | – | – | yes |
| 617-535 | Verizon | BOSTON | – | – | yes |
| 617-536 | Verizon | BOSTON | – | – | yes |
| 617-537 | Verizon | QUINCY | – | – | yes |
| 617-538 | AT&T | WALTHAM | – | – | yes |
| 617-539 | Verizon | WINTHROP | – | yes | yes |
| 617-540 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-541 | Verizon | ROXBURY | – | – | yes |
| 617-542 | Verizon | BOSTON | – | – | yes |
| 617-543 | AT&T | BOSTON | – | – | yes |
| 617-544 | Windstream | EVERETT | 2001-02-22 | yes | yes |
| 617-545 | Bandwidth | EVERETT | – | yes | yes |
| 617-546 | Bandwidth | NEWTON | – | yes | yes |
| 617-547 | Verizon | CAMBRIDGE | – | – | yes |
| 617-548 | Verizon | SAUGUS | – | – | yes |
| 617-549 | Verizon | BOSTON | – | – | yes |
| 617-551 | Verizon | CAMBRIDGE | – | – | yes |
| 617-552 | Verizon | NEWTON | – | – | yes |
| 617-553 | RCN TELECOM SERVICES, INC. - MA | JAMAICA PL | – | yes | yes |
| 617-556 | Verizon | BOSTON | – | – | yes |
| 617-557 | Verizon | BOSTON | – | – | yes |
| 617-558 | Verizon | NEWTON | – | – | yes |
| 617-559 | Verizon | NEWTON | – | – | yes |
| 617-560 | Verizon | BRIGHTON | – | yes | yes |
| 617-561 | Verizon | EASTBOSTON | – | – | yes |
| 617-562 | Verizon | BRIGHTON | – | yes | yes |
| 617-563 | AT&T | BOSTON | – | – | yes |
| 617-564 | Windstream | NEWTON | – | yes | yes |
| 617-565 | Verizon | BOSTON | – | – | yes |
| 617-566 | Verizon | BROOKLINE | – | – | yes |
| 617-567 | Verizon | EASTBOSTON | – | – | yes |
| 617-568 | Verizon | EASTBOSTON | – | – | yes |
| 617-569 | Verizon | EASTBOSTON | – | – | yes |
| 617-570 | Verizon | BOSTON | – | – | yes |
| 617-571 | Verizon | BOSTON | – | – | yes |
| 617-572 | Verizon | BOSTON | – | – | yes |
| 617-573 | Verizon | BOSTON | – | yes | yes |
| 617-574 | Verizon | BOSTON | – | – | yes |
| 617-575 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-576 | Verizon | CAMBRIDGE | – | – | yes |
| 617-577 | Verizon | CAMBRIDGE | – | – | yes |
| 617-578 | Verizon | BOSTON | – | – | yes |
| 617-579 | Verizon | BOSTON | – | yes | yes |
| 617-580 | Verizon | CHARLESTN | – | yes | yes |
| 617-581 | Windstream | NEWTON | – | yes | yes |
| 617-582 | Verizon | BROOKLINE | – | yes | yes |
| 617-583 | Lumen | CAMBRIDGE | – | yes | yes |
| 617-584 | AT&T | NEWTON | – | – | yes |
| 617-585 | Verizon | BOSTON | – | – | yes |
| 617-586 | Bandwidth | BRIGHTON | – | yes | yes |
| 617-587 | Verizon | BOSTON | – | – | yes |
| 617-588 | Verizon | CAMBRIDGE | – | – | yes |
| 617-589 | Verizon | BOSTON | – | yes | yes |
| 617-590 | T-Mobile | BOSTON | – | yes | yes |
| 617-591 | Verizon | SOMERVILLE | – | yes | yes |
| 617-592 | T-Mobile | BOSTON | – | yes | yes |
| 617-593 | T-Mobile | BOSTON | – | yes | yes |
| 617-594 | T-Mobile | BOSTON | – | yes | yes |
| 617-595 | Verizon | BOSTON | 2005-03-07 | yes | yes |
| 617-596 | T-Mobile | SO BOSTON | – | yes | yes |
| 617-597 | Verizon | NEWTON | – | yes | yes |
| 617-598 | AT&T | BOSTON | – | – | yes |
| 617-599 | Verizon | CAMBRIDGE | 2001-02-28 | yes | yes |
| 617-600 | Verizon | WATERTOWN | – | yes | yes |
| 617-601 | NORFOLK COUNTY INTERNET, INC. | EVERETT | – | – | yes |
| 617-602 | Verizon | ROXBURY | – | yes | yes |
| 617-603 | Verizon | BOSTON | – | – | yes |
| 617-604 | Verizon | HYDE PARK | – | yes | yes |
| 617-605 | AT&T | MALDEN | – | – | yes |
| 617-606 | Lumen | ROXBURY | – | yes | yes |
| 617-607 | Verizon | WATERTOWN | – | yes | yes |
| 617-608 | Verizon | BROOKLINE | – | yes | yes |
| 617-609 | AT&T | MILTON | 2024-01-05 | yes | yes |
| 617-610 | AT&T | NEWTON | – | – | yes |
| 617-612 | AT&T | WATERTOWN | – | yes | yes |
| 617-613 | AT&T | CAMBRIDGE | – | – | yes |
| 617-614 | Verizon | NEWTON | – | yes | yes |
| 617-615 | RCN TELECOM SERVICES, INC. - MA | MILTON | – | yes | yes |
| 617-616 | AT&T | SOMERVILLE | – | yes | yes |
| 617-617 | MASS MOBILE LLC | BOSTON | 2025-03-18 | yes | yes |
| 617-618 | Verizon | NEWTON | – | yes | yes |
| 617-619 | Verizon | BOSTON | – | – | yes |
| 617-620 | Verizon | BOSTON | – | – | yes |
| 617-621 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-622 | Lumen | SO BOSTON | – | yes | yes |
| 617-623 | Verizon | SOMERVILLE | – | – | yes |
| 617-624 | Verizon | BOSTON | – | – | yes |
| 617-625 | Verizon | SOMERVILLE | – | – | yes |
| 617-626 | Verizon | BOSTON | – | – | yes |
| 617-627 | Verizon | SOMERVILLE | – | – | yes |
| 617-628 | Verizon | SOMERVILLE | – | – | yes |
| 617-629 | Verizon | SOMERVILLE | – | – | yes |
| 617-630 | Verizon | NEWTON | – | – | yes |
| 617-631 | Verizon | NEWTON | – | yes | yes |
| 617-632 | Verizon | BROOKLINE | – | – | yes |
| 617-633 | AT&T | WALTHAM | – | – | yes |
| 617-634 | Verizon | EASTBOSTON | – | yes | yes |
| 617-635 | Verizon | BOSTON | – | – | yes |
| 617-636 | Verizon | BOSTON | – | – | yes |
| 617-637 | T-Mobile | JAMAICA PL | 2011-10-19 | yes | yes |
| 617-638 | Verizon | BOSTON | – | – | yes |
| 617-639 | Lumen | QUINCY | – | yes | yes |
| 617-640 | AT&T | DEDHAM | – | – | yes |
| 617-641 | Verizon | NEWTON | – | yes | yes |
| 617-642 | T-Mobile | CAMBRIDGE | – | – | yes |
| 617-643 | Verizon | BOSTON | 2001-07-16 | – | yes |
| 617-644 | Bandwidth | NEWTON | – | yes | yes |
| 617-645 | Verizon | BOSTON | – | – | yes |
| 617-646 | AT&T | BOSTON | – | yes | yes |
| 617-647 | American Messaging | CAMBRIDGE | – | – | yes |
| 617-648 | Lumen | BOSTON | – | yes | yes |
| 617-649 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-650 | AT&T | BOSTON | – | – | yes |
| 617-651 | Windstream | BROOKLINE | – | yes | yes |
| 617-652 | Verizon | ROXBURY | – | yes | yes |
| 617-653 | AT&T | QUINCY | – | – | yes |
| 617-654 | Verizon | BOSTON | – | – | yes |
| 617-655 | Onvoy | BOSTON | 2019-01-30 | yes | yes |
| 617-656 | Verizon | NEWTON | – | – | yes |
| 617-657 | Windstream | QUINCY | – | yes | yes |
| 617-658 | Windstream | NEWTON | 2001-05-02 | yes | yes |
| 617-659 | Verizon | NEWTON | 2005-02-28 | yes | yes |
| 617-660 | Verizon | CHELSEA | – | – | yes |
| 617-661 | Verizon | CAMBRIDGE | – | – | yes |
| 617-662 | Verizon | BOSTON | – | – | yes |
| 617-663 | AT&T | NEWTON | – | yes | yes |
| 617-664 | Verizon | BOSTON | – | – | yes |
| 617-665 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-666 | Verizon | SOMERVILLE | – | – | yes |
| 617-667 | Verizon | BROOKLINE | – | – | yes |
| 617-668 | Verizon | WATERTOWN | – | yes | yes |
| 617-669 | T-Mobile | CHARLESTN | – | – | yes |
| 617-670 | RCN TELECOM SERVICES, INC. - MA | BOSTON | – | yes | yes |
| 617-671 | T-Mobile | BOSTON | 2004-11-18 | yes | yes |
| 617-672 | AT&T | BOSTON | 2008-04-24 | yes | yes |
| 617-673 | Verizon | WATERTOWN | – | yes | yes |
| 617-674 | TPx | CAMBRIDGE | – | yes | yes |
| 617-675 | Bandwidth | HYDE PARK | – | yes | yes |
| 617-676 | Lumen | JAMAICA PL | – | yes | yes |
| 617-677 | NORFOLK COUNTY INTERNET, INC. | BROOKLINE | – | – | yes |
| 617-678 | AT&T | NEWTON | – | – | yes |
| 617-679 | Verizon | CAMBRIDGE | – | – | yes |
| 617-680 | Verizon | BOSTON | – | – | yes |
| 617-681 | Verizon | CHARLESTN | – | yes | yes |
| 617-682 | YMAX COMMUNICATIONS CORP. - MA | CAMBRIDGE | – | yes | yes |
| 617-683 | Verizon | BOSTON | – | yes | yes |
| 617-684 | Verizon | SOMERVILLE | – | yes | yes |
| 617-685 | Verizon | CAMBRIDGE | 2018-01-08 | yes | yes |
| 617-686 | Verizon | BOSTON | – | – | yes |
| 617-687 | Verizon | QUINCY | – | yes | yes |
| 617-688 | AT&T | KINGSTON | – | – | yes |
| 617-689 | Verizon | QUINCY | – | yes | yes |
| 617-690 | Lumen | MILTON | – | yes | yes |
| 617-691 | AT&T | QUINCY | – | yes | yes |
| 617-692 | AT&T | BOSTON | – | yes | yes |
| 617-693 | Onvoy | CAMBRIDGE | – | yes | yes |
| 617-694 | Verizon | BOSTON | – | – | yes |
| 617-695 | Verizon | BOSTON | – | – | yes |
| 617-696 | Verizon | MILTON | – | – | yes |
| 617-697 | AT&T | BOSTON | – | – | yes |
| 617-698 | Verizon | MILTON | – | – | yes |
| 617-699 | Verizon | BOSTON | – | – | yes |
| 617-701 | Verizon | SO BOSTON | – | yes | yes |
| 617-702 | Verizon | SOMERVILLE | – | yes | yes |
| 617-703 | American Messaging | CAMBRIDGE | – | – | yes |
| 617-704 | Verizon | DORCHESTER | – | yes | yes |
| 617-705 | Verizon | HYDE PARK | – | – | yes |
| 617-706 | Verizon | QUINCY | – | yes | yes |
| 617-707 | NORFOLK COUNTY INTERNET, INC. | DORCHESTER | – | – | yes |
| 617-708 | RCN TELECOM SERVICES, INC. - MA | ROXBURY | – | yes | yes |
| 617-710 | AT&T | CAMBRIDGE | – | – | yes |
| 617-712 | Verizon | CHARLESTN | – | yes | yes |
| 617-713 | Verizon | BROOKLINE | – | – | yes |
| 617-714 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-715 | Windstream | CAMBRIDGE | – | – | yes |
| 617-716 | Verizon | EASTBOSTON | – | yes | yes |
| 617-717 | AT&T | BOSTON | – | yes | yes |
| 617-718 | RCN TELECOM SERVICES, INC. - MA | SOMERVILLE | – | yes | yes |
| 617-719 | T-Mobile | BOSTON | – | yes | yes |
| 617-720 | Verizon | BOSTON | – | – | yes |
| 617-721 | Verizon | BOSTON | – | – | yes |
| 617-722 | Verizon | BOSTON | – | – | yes |
| 617-723 | Verizon | BOSTON | – | – | yes |
| 617-724 | Verizon | BOSTON | – | – | yes |
| 617-725 | Verizon | BOSTON | – | – | yes |
| 617-726 | Verizon | BOSTON | – | – | yes |
| 617-727 | Verizon | BOSTON | – | – | yes |
| 617-728 | Verizon | BOSTON | – | – | yes |
| 617-729 | Lumen | QUINCY | – | yes | yes |
| 617-730 | Verizon | BROOKLINE | – | – | yes |
| 617-731 | Verizon | BROOKLINE | – | – | yes |
| 617-732 | Verizon | BROOKLINE | – | – | yes |
| 617-733 | Verizon | BOSTON | – | – | yes |
| 617-734 | Verizon | BROOKLINE | – | – | yes |
| 617-735 | Verizon | BROOKLINE | – | yes | yes |
| 617-737 | Verizon | BOSTON | – | – | yes |
| 617-738 | Verizon | BROOKLINE | – | – | yes |
| 617-739 | Verizon | BROOKLINE | – | – | yes |
| 617-740 | Verizon | DORCHESTER | – | yes | yes |
| 617-741 | Lumen | SOMERVILLE | – | yes | yes |
| 617-742 | Verizon | BOSTON | – | – | yes |
| 617-743 | Verizon | BOSTON | – | – | yes |
| 617-744 | Comcast | WATERTOWN | – | yes | yes |
| 617-745 | Verizon | QUINCY | – | – | yes |
| 617-746 | Verizon | BRIGHTON | – | – | yes |
| 617-747 | AT&T | BOSTON | – | – | yes |
| 617-748 | Verizon | BOSTON | – | – | yes |
| 617-749 | Onvoy | ROXBURY | – | yes | yes |
| 617-750 | AT&T | QUINCY | – | – | yes |
| 617-751 | Lumen | BROOKLINE | – | yes | yes |
| 617-752 | Verizon | SO BOSTON | – | yes | yes |
| 617-753 | Verizon | BOSTON | – | – | yes |
| 617-754 | Verizon | BROOKLINE | – | – | yes |
| 617-755 | AT&T | BOSTON | – | – | yes |
| 617-756 | T-Mobile | BOSTON | 2007-03-30 | yes | yes |
| 617-757 | Verizon | BOSTON | – | – | yes |
| 617-758 | Windstream | CAMBRIDGE | – | yes | yes |
| 617-759 | AT&T | DEDHAM | – | – | yes |
| 617-760 | Verizon | BOSTON | – | – | yes |
| 617-761 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-762 | Lumen | NEWTON | – | yes | yes |
| 617-763 | AT&T | BOSTON | – | – | yes |
| 617-764 | Comcast | SOMERVILLE | – | yes | yes |
| 617-765 | Lumen | SO BOSTON | 2002-02-27 | yes | yes |
| 617-766 | AT&T | SO BOSTON | – | yes | yes |
| 617-767 | T-Mobile | SOMERVILLE | 2001-03-09 | yes | yes |
| 617-768 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-769 | Verizon | QUINCY | – | yes | yes |
| 617-770 | Verizon | QUINCY | – | – | yes |
| 617-771 | AT&T | MALDEN | – | – | yes |
| 617-772 | Verizon | BOSTON | – | – | yes |
| 617-773 | Verizon | QUINCY | – | – | yes |
| 617-774 | Verizon | QUINCY | – | yes | yes |
| 617-775 | AT&T | NEWTON | – | – | yes |
| 617-776 | Verizon | SOMERVILLE | – | – | yes |
| 617-777 | T-Mobile | BOSTON | 2001-10-01 | yes | yes |
| 617-778 | Windstream | BOSTON | – | yes | yes |
| 617-779 | Verizon | BRIGHTON | – | yes | yes |
| 617-780 | Verizon | BOSTON | – | – | yes |
| 617-781 | COMMIO, LLC | DORCHESTER | 2024-02-09 | yes | yes |
| 617-782 | Verizon | BRIGHTON | – | – | yes |
| 617-783 | Verizon | BRIGHTON | – | – | yes |
| 617-784 | AT&T | BOSTON | – | – | yes |
| 617-785 | T-Mobile | BOSTON | 2004-09-28 | yes | yes |
| 617-786 | Verizon | QUINCY | – | yes | yes |
| 617-787 | Verizon | BRIGHTON | – | – | yes |
| 617-788 | Verizon | BOSTON | – | – | yes |
| 617-789 | Verizon | BRIGHTON | – | yes | yes |
| 617-790 | Verizon | BOSTON | – | – | yes |
| 617-791 | AT&T | SAUGUS | – | – | yes |
| 617-792 | T-Mobile | ROXBURY | – | – | yes |
| 617-793 | AT&T | QUINCY | – | yes | yes |
| 617-794 | AT&T | BOSTON | – | – | yes |
| 617-795 | RCN TELECOM SERVICES, INC. - MA | NEWTON | – | yes | yes |
| 617-796 | Verizon | NEWTON | – | – | yes |
| 617-797 | Verizon | SAUGUS | – | – | yes |
| 617-798 | Bandwidth | CAMBRIDGE | – | yes | yes |
| 617-799 | T-Mobile | BOSTON | – | yes | yes |
| 617-800 | RCN TELECOM SERVICES, INC. - MA | CAMBRIDGE | – | yes | yes |
| 617-801 | Windstream | QUINCY | – | yes | yes |
| 617-802 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-803 | AT&T | CAMBRIDGE | – | – | yes |
| 617-804 | Bandwidth | QUINCY | – | yes | yes |
| 617-806 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-807 | Windstream | BOSTON | 2010-05-17 | yes | yes |
| 617-812 | Onvoy | CAMBRIDGE | – | – | yes |
| 617-816 | AT&T | BOSTON | – | – | yes |
| 617-817 | AT&T | BRIGHTON | – | – | yes |
| 617-818 | T-Mobile | BOSTON | – | – | yes |
| 617-819 | Verizon | CHELSEA | – | yes | yes |
| 617-820 | Lumen | BOSTON | 2004-09-02 | yes | yes |
| 617-821 | T-Mobile | CAMBRIDGE | – | yes | yes |
| 617-822 | Verizon | DORCHESTER | – | – | yes |
| 617-823 | Verizon | BOSTON | – | – | yes |
| 617-824 | AT&T | BOSTON | – | yes | yes |
| 617-825 | Verizon | DORCHESTER | – | – | yes |
| 617-826 | Lumen | BELMONT | – | yes | yes |
| 617-827 | AT&T | WEYMOUTH | – | – | yes |
| 617-828 | T-Mobile | BOSTON | – | yes | yes |
| 617-829 | HD CARRIER LLC | QUINCY | – | yes | yes |
| 617-830 | TPx | BOSTON | 2005-02-15 | yes | yes |
| 617-831 | Verizon | NEWTON | – | yes | yes |
| 617-832 | Verizon | BOSTON | – | yes | yes |
| 617-833 | Windstream | HYDE PARK | – | yes | yes |
| 617-834 | AT&T | BOSTON | – | – | yes |
| 617-835 | Verizon | BOSTON | – | – | yes |
| 617-836 | NORFOLK COUNTY INTERNET, INC. | CAMBRIDGE | – | – | yes |
| 617-837 | Lumen | QUINCY | – | yes | yes |
| 617-838 | AT&T | BOSTON | – | – | yes |
| 617-839 | T-Mobile | BOSTON | – | yes | yes |
| 617-840 | AT&T | BOSTON | – | – | yes |
| 617-841 | Lumen | WINTHROP | – | yes | yes |
| 617-842 | AT&T | QUINCY | – | – | yes |
| 617-843 | Onvoy | EVERETT | – | yes | yes |
| 617-844 | Windstream | CAMBRIDGE | – | – | yes |
| 617-845 | Verizon | QUINCY | – | yes | yes |
| 617-846 | Verizon | WINTHROP | – | – | yes |
| 617-847 | Verizon | QUINCY | – | yes | yes |
| 617-848 | Lumen | BOSTON | – | yes | yes |
| 617-849 | AT&T | BOSTON | 2006-06-20 | yes | yes |
| 617-850 | AT&T | BOSTON | – | yes | yes |
| 617-851 | Verizon | BOSTON | – | – | yes |
| 617-852 | AT&T | CAMBRIDGE | – | – | yes |
| 617-853 | NORFOLK COUNTY INTERNET, INC. | NEWTON | – | – | yes |
| 617-854 | Verizon | BOSTON | – | yes | yes |
| 617-855 | Verizon | BELMONT | – | yes | yes |
| 617-856 | Verizon | BOSTON | – | – | yes |
| 617-857 | Bandwidth | BROOKLINE | 2024-09-25 | yes | yes |
| 617-858 | T-Mobile | ROXBURY | 2009-03-31 | yes | yes |
| 617-859 | Verizon | BOSTON | – | yes | yes |
| 617-860 | Verizon | BROOKLINE | – | yes | yes |
| 617-861 | Verizon | BOSTON | – | yes | yes |
| 617-862 | Verizon | NEWTON | – | yes | yes |
| 617-863 | Verizon | SOMERVILLE | – | yes | yes |
| 617-864 | Verizon | CAMBRIDGE | – | – | yes |
| 617-865 | Bandwidth | BOSTON | – | yes | yes |
| 617-866 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-867 | Verizon | BOSTON | – | yes | yes |
| 617-868 | Verizon | CAMBRIDGE | – | – | yes |
| 617-869 | T-Mobile | BOSTON | 2001-03-09 | yes | yes |
| 617-870 | Lumen | BRIGHTON | – | yes | yes |
| 617-871 | Windstream | CAMBRIDGE | – | yes | yes |
| 617-872 | Verizon | BOSTON | – | – | yes |
| 617-873 | Verizon | CAMBRIDGE | – | – | yes |
| 617-874 | Verizon | EASTBOSTON | – | yes | yes |
| 617-875 | Verizon | BOSTON | – | – | yes |
| 617-876 | Verizon | CAMBRIDGE | – | – | yes |
| 617-877 | Verizon | BOSTON | – | – | yes |
| 617-878 | Verizon | BOSTON | – | – | yes |
| 617-879 | RCN TELECOM SERVICES, INC. - MA | BROOKLINE | – | yes | yes |
| 617-880 | AT&T | BOSTON | – | yes | yes |
| 617-881 | Verizon | NEWTON | – | yes | yes |
| 617-882 | Bandwidth | NEWTON | – | yes | yes |
| 617-883 | Verizon | BELMONT | – | yes | yes |
| 617-884 | Verizon | CHELSEA | – | – | yes |
| 617-885 | MOBILESPHERE LLC | BOSTON | 2023-10-18 | yes | yes |
| 617-886 | Verizon | CHARLESTN | – | – | yes |
| 617-887 | Verizon | CHELSEA | – | – | yes |
| 617-888 | T-Mobile | BOSTON | 2005-04-28 | yes | yes |
| 617-889 | Verizon | CHELSEA | – | – | yes |
| 617-890 | Verizon | QUINCY | – | yes | yes |
| 617-891 | NORFOLK COUNTY INTERNET, INC. | BRIGHTON | – | – | yes |
| 617-892 | Verizon | BOSTON | – | yes | yes |
| 617-893 | AT&T | NEWTON | – | – | yes |
| 617-894 | Verizon | BOSTON | 2004-05-13 | yes | yes |
| 617-895 | Lumen | EASTBOSTON | – | yes | yes |
| 617-896 | Verizon | BOSTON | – | – | yes |
| 617-897 | Verizon | BOSTON | – | – | yes |
| 617-898 | Verizon | MILTON | – | yes | yes |
| 617-899 | AT&T | CAMBRIDGE | – | – | yes |
| 617-901 | AT&T | BOSTON | – | – | yes |
| 617-902 | Windstream | CAMBRIDGE | – | yes | yes |
| 617-903 | Windstream | BRIGHTON | – | yes | yes |
| 617-904 | Windstream | BOSTON | – | yes | yes |
| 617-905 | T-Mobile | DORCHESTER | – | yes | yes |
| 617-906 | Lumen | BROOKLINE | – | yes | yes |
| 617-907 | NORFOLK COUNTY INTERNET, INC. | MILTON | – | – | yes |
| 617-908 | T-Mobile | BOSTON | – | yes | yes |
| 617-909 | AT&T | CAMBRIDGE | – | – | yes |
| 617-910 | Comcast | HYDE PARK | – | yes | yes |
| 617-912 | AT&T | BOSTON | – | – | yes |
| 617-913 | Verizon | EASTBOSTON | – | yes | yes |
| 617-914 | Verizon | CAMBRIDGE | – | – | yes |
| 617-915 | Onvoy | MILTON | – | yes | yes |
| 617-916 | Comcast | NEWTON | – | yes | yes |
| 617-917 | Verizon | EVERETT | – | yes | yes |
| 617-918 | Verizon | BOSTON | – | yes | yes |
| 617-919 | Verizon | BOSTON | – | – | yes |
| 617-921 | Verizon | BOSTON | – | – | yes |
| 617-922 | AT&T | MILTON | – | – | yes |
| 617-923 | Verizon | WATERTOWN | – | – | yes |
| 617-924 | Verizon | WATERTOWN | – | – | yes |
| 617-925 | Lumen | BRIGHTON | – | yes | yes |
| 617-926 | Verizon | WATERTOWN | – | – | yes |
| 617-927 | Verizon | BOSTON | – | yes | yes |
| 617-928 | Verizon | NEWTON | – | yes | yes |
| 617-929 | Verizon | DORCHESTER | – | – | yes |
| 617-930 | AT&T | WALTHAM | – | – | yes |
| 617-932 | AT&T | BELMONT | – | yes | yes |
| 617-933 | Windstream | BOSTON | – | – | yes |
| 617-934 | Lumen | QUINCY | – | yes | yes |
| 617-935 | T-Mobile | BROOKLINE | 2002-07-31 | yes | yes |
| 617-936 | Windstream | BOSTON | 2011-12-09 | yes | yes |
| 617-937 | Verizon | BOSTON | – | yes | yes |
| 617-938 | Lumen | BOSTON | 2004-08-04 | yes | yes |
| 617-939 | Verizon | BOSTON | – | yes | yes |
| 617-941 | Verizon | SOMERVILLE | – | yes | yes |
| 617-942 | AT&T | JAMAICA PL | – | yes | yes |
| 617-943 | AT&T | BOSTON | – | – | yes |
| 617-944 | Comcast | EVERETT | 2001-03-08 | yes | yes |
| 617-945 | Comcast | CAMBRIDGE | – | yes | yes |
| 617-946 | Verizon | BOSTON | – | yes | yes |
| 617-947 | Verizon | BOSTON | – | – | yes |
| 617-948 | RCN TELECOM SERVICES, INC. - MA | BOSTON | – | yes | yes |
| 617-949 | Verizon | CAMBRIDGE | – | yes | yes |
| 617-951 | Verizon | BOSTON | – | – | yes |
| 617-952 | Verizon | CHARLESTN | 2001-03-08 | yes | yes |
| 617-953 | T-Mobile | BROOKLINE | – | – | yes |
| 617-954 | Verizon | BOSTON | – | yes | yes |
| 617-955 | AT&T | CAMBRIDGE | 2005-05-09 | yes | yes |
| 617-956 | Verizon | BOSTON | – | yes | yes |
| 617-957 | AT&T | MELROSE | – | – | yes |
| 617-958 | Onvoy | CHELSEA | – | yes | yes |
| 617-959 | T-Mobile | BOSTON | 2004-08-23 | yes | yes |
| 617-960 | Verizon | BOSTON | – | yes | yes |
| 617-961 | Verizon | BOSTON | 2001-12-26 | yes | yes |
| 617-962 | AT&T | WALTHAM | – | – | yes |
| 617-963 | T-Mobile | BOSTON | 2007-09-27 | yes | yes |
| 617-964 | Verizon | NEWTON | – | – | yes |
| 617-965 | Verizon | NEWTON | – | – | yes |
| 617-966 | AT&T | WALTHAM | – | – | yes |
| 617-967 | AT&T | WALTHAM | – | yes | yes |
| 617-968 | AT&T | WALTHAM | – | yes | yes |
| 617-969 | Verizon | NEWTON | – | – | yes |
| 617-970 | T-Mobile | EASTBOSTON | – | yes | yes |
| 617-971 | Verizon | JAMAICA PL | – | yes | yes |
| 617-972 | Verizon | WATERTOWN | – | – | yes |
| 617-973 | Verizon | BOSTON | – | – | yes |
| 617-974 | AT&T | WALTHAM | – | – | yes |
| 617-975 | Verizon | BROOKLINE | – | – | yes |
| 617-977 | Verizon | BELMONT | – | yes | yes |
| 617-979 | Windstream | DORCHESTER | – | – | yes |
| 617-980 | T-Mobile | MILTON | 2002-10-25 | yes | yes |
| 617-981 | RCN TELECOM SERVICES, INC. - MA | EASTBOSTON | – | yes | yes |
| 617-982 | T-Mobile | BOSTON | – | yes | yes |
| 617-983 | Verizon | JAMAICA PL | – | – | yes |
| 617-984 | Verizon | QUINCY | – | yes | yes |
| 617-985 | Verizon | QUINCY | – | – | yes |
| 617-986 | Windstream | BOSTON | – | – | yes |
| 617-987 | RCN TELECOM SERVICES, INC. - MA | BRIGHTON | – | yes | yes |
| 617-988 | Verizon | BOSTON | – | – | yes |
| 617-989 | Verizon | ROXBURY | – | – | yes |
| 617-990 | Lumen | HYDE PARK | – | yes | yes |
| 617-991 | Verizon | BROOKLINE | – | yes | yes |
| 617-992 | Verizon | BROOKLINE | – | yes | yes |
| 617-993 | Verizon | BELMONT | – | yes | yes |
| 617-994 | Verizon | BOSTON | – | – | yes |
| 617-995 | Verizon | CAMBRIDGE | – | – | yes |
| 617-996 | Lumen | SOMERVILLE | – | yes | yes |
| 617-997 | Lumen | EASTBOSTON | – | yes | yes |
| 617-998 | Verizon | CAMBRIDGE | 2001-06-21 | – | yes |
| 617-999 | Verizon | CAMBRIDGE | – | yes | yes |
Frequently asked
How many prefixes does area code 617 have?
768 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 7,680 thousand-number ranges across 27 rate centers.
What do the first three digits after 617 tell me?
They identify the block, which tells you the rate center it was allocated to and the carrier that received it. They do not tell you who serves the number today: portability moves numbers between carriers, and pooling splits a block between several of them.
Is a 617 prefix tied to a specific town?
To a rate center, which is billing geography rather than a town. NANPA abbreviates rate center names to ten characters and in large metros uses zone codes, so the name is a NANPA label, not a place name.
What does “pooled” mean in the 617 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 401 of 617's blocks are pooled, which is how regulators slowed down area code exhaustion – and why one prefix can belong to several carriers.
Source and limits
NANPA CO Code Assignment Records, all states, utilized codes, file updated 11/01/2026 – the rows where the record's Use field is “AS” (assigned). Unavailable codes are excluded. The records say who received a block and when, not who serves a particular number today.
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