Phone numbers in Boston, Massachusetts
Boston has 426 phone prefixes in area codes 617, 857.
Biggest holders: Verizon (local phone), Verizon Wireless, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 42%
- Local phone company 33%
- Internet / business phone carrier 17%
- Phone company 8%
Every prefix in Boston
Search the first six digits of a number in this list. If it's here, the number started in Boston with the carrier shown. If it isn't, check the Massachusetts page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 617-204 | Verizon (local phone) | Local phone company | – |
| 617-205 | Norfolk County Internet | Phone company | – |
| 617-210 | Verizon (local phone) | Local phone company | – |
| 617-212 | T-Mobile (including Sprint) | Mobile carrier | – |
| 617-217 | Tc Systems | Phone company | – |
| 617-222 | Verizon (local phone) | Local phone company | – |
| 617-223 | Verizon (local phone) | Local phone company | – |
| 617-224 | MCImetro (Verizon Business) | Internet / business phone carrier | 2001 |
| 617-226 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 617-227 | Verizon (local phone) | Local phone company | – |
| 617-228 | Verizon (local phone) | Local phone company | – |
| 617-235 | Verizon (local phone) | Local phone company | – |
| 617-236 | Verizon (local phone) | Local phone company | – |
| 617-239 | Tc Systems | Phone company | – |
| 617-246 | Verizon (local phone) | Local phone company | – |
| 617-247 | Verizon (local phone) | Local phone company | – |
| 617-248 | Verizon (local phone) | Local phone company | – |
| 617-255 | Verizon (local phone) | Local phone company | – |
| 617-259 | T-Mobile (including Sprint) | Mobile carrier | 2004 |
| 617-261 | Verizon (local phone) | Local phone company | – |
| 617-262 | Verizon (local phone) | Local phone company | – |
| 617-263 | Verizon (local phone) | Local phone company | – |
| 617-266 | Verizon (local phone) | Local phone company | – |
| 617-267 | Verizon (local phone) | Local phone company | – |
| 617-275 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
| 617-279 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 617-283 | AT&T Mobility | Mobile carrier | – |
| 617-289 | Verizon (local phone) | Local phone company | – |
| 617-292 | Verizon (local phone) | Local phone company | – |
| 617-293 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 617-295 | Verizon (local phone) | Local phone company | – |
| 617-303 | Freedom Ring Communications | Phone company | – |
| 617-304 | MetroPCS (T-Mobile) | Mobile carrier | 2002 |
| 617-305 | Verizon (local phone) | Local phone company | – |
| 617-306 | AT&T Mobility | Mobile carrier | – |
| 617-309 | Windstream (PAETEC) | Internet / business phone carrier | 2004 |
| 617-310 | Verizon (local phone) | Local phone company | – |
| 617-312 | Verizon Wireless | Mobile carrier | – |
| 617-314 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 617-316 | Tc Systems | Phone company | – |
| 617-320 | AT&T Mobility | Mobile carrier | – |
| 617-330 | Verizon (local phone) | Local phone company | – |
| 617-331 | T-Mobile (including Sprint) | Mobile carrier | – |
| 617-338 | Verizon (local phone) | Local phone company | – |
| 617-341 | Verizon (local phone) | Local phone company | – |
| 617-342 | Verizon (local phone) | Local phone company | – |
| 617-343 | Verizon (local phone) | Local phone company | – |
| 617-345 | Verizon (local phone) | Local phone company | – |
| 617-346 | Verizon (local phone) | Local phone company | – |
| 617-348 | Verizon (local phone) | Local phone company | – |
| 617-350 | Verizon (local phone) | Local phone company | – |
| 617-351 | Verizon (local phone) | Local phone company | – |
| 617-352 | Verizon (local phone) | Local phone company | – |
| 617-353 | Verizon (local phone) | Local phone company | – |
| 617-356 | Verizon Wireless | Mobile carrier | – |
| 617-357 | Verizon (local phone) | Local phone company | – |
| 617-358 | Verizon (local phone) | Local phone company | – |
| 617-366 | Verizon (local phone) | Local phone company | 2004 |
| 617-367 | Verizon (local phone) | Local phone company | – |
| 617-368 | Verizon (local phone) | Local phone company | – |
| 617-369 | Verizon (local phone) | Local phone company | – |
| 617-371 | Verizon (local phone) | Local phone company | – |
| 617-372 | Verizon (local phone) | Local phone company | – |
| 617-373 | Verizon (local phone) | Local phone company | – |
| 617-375 | Verizon (local phone) | Local phone company | – |
| 617-377 | Verizon (local phone) | Local phone company | – |
| 617-378 | Tc Systems | Phone company | – |
| 617-385 | Tc Systems | Phone company | – |
| 617-391 | Windstream (PAETEC) | Internet / business phone carrier | 2008 |
| 617-392 | Tc Systems | Phone company | – |
| 617-399 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 617-406 | Tc Systems | Phone company | – |
| 617-407 | T-Mobile (including Sprint) | Mobile carrier | – |
| 617-412 | T-Mobile (including Sprint) | Mobile carrier | 2005 |
| 617-413 | Verizon Wireless | Mobile carrier | – |
| 617-414 | Verizon (local phone) | Local phone company | – |
| 617-416 | AT&T Mobility | Mobile carrier | 2001 |
| 617-419 | Bandwidth | Internet / business phone carrier | 2009 |
| 617-421 | Verizon (local phone) | Local phone company | – |
| 617-422 | Verizon (local phone) | Local phone company | – |
| 617-423 | Verizon (local phone) | Local phone company | – |
| 617-424 | Verizon (local phone) | Local phone company | – |
| 617-425 | Verizon (local phone) | Local phone company | – |
| 617-426 | Verizon (local phone) | Local phone company | – |
| 617-428 | Verizon (local phone) | Local phone company | – |
| 617-429 | Verizon Wireless | Mobile carrier | – |
| 617-434 | Verizon (local phone) | Local phone company | – |
| 617-437 | Verizon (local phone) | Local phone company | – |
| 617-438 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 617-439 | Verizon (local phone) | Local phone company | – |
| 617-443 | Verizon (local phone) | Local phone company | – |
| 617-447 | Verizon Wireless | Mobile carrier | 2004 |
| 617-448 | Verizon Wireless | Mobile carrier | – |
| 617-449 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 617-450 | Verizon (local phone) | Local phone company | – |
| 617-451 | Verizon (local phone) | Local phone company | – |
| 617-456 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 617-457 | Verizon (local phone) | Local phone company | – |
| 617-459 | T-Mobile (including Sprint) | Mobile carrier | 2004 |
| 617-470 | AT&T Mobility | Mobile carrier | – |
| 617-476 | Tc Systems | Phone company | – |
| 617-478 | Verizon (local phone) | Local phone company | – |
| 617-480 | AT&T Mobility | Mobile carrier | – |
| 617-482 | Verizon (local phone) | Local phone company | – |
| 617-488 | Tc Systems | Phone company | – |
| 617-490 | Verizon (local phone) | Local phone company | – |
| 617-502 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 617-504 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 617-507 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 617-510 | AT&T Mobility | Mobile carrier | – |
| 617-512 | Verizon Wireless | Mobile carrier | – |
| 617-513 | AT&T Mobility | Mobile carrier | – |
| 617-515 | AT&T Mobility | Mobile carrier | – |
| 617-517 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 617-519 | Verizon (local phone) | Local phone company | – |
| 617-521 | Verizon (local phone) | Local phone company | – |
| 617-523 | Verizon (local phone) | Local phone company | – |
| 617-526 | Verizon (local phone) | Local phone company | – |
| 617-530 | Tc Systems | Phone company | – |
| 617-531 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 617-532 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 617-534 | Verizon (local phone) | Local phone company | – |
| 617-535 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 617-536 | Verizon (local phone) | Local phone company | – |
| 617-542 | Verizon (local phone) | Local phone company | – |
| 617-543 | AT&T Mobility | Mobile carrier | – |
| 617-549 | Verizon Wireless | Mobile carrier | – |
| 617-556 | Verizon (local phone) | Local phone company | – |
| 617-557 | Verizon (local phone) | Local phone company | – |
| 617-563 | Tc Systems | Phone company | – |
| 617-565 | Verizon (local phone) | Local phone company | – |
| 617-570 | Verizon (local phone) | Local phone company | – |
| 617-571 | Verizon Wireless | Mobile carrier | – |
| 617-572 | Verizon (local phone) | Local phone company | – |
| 617-573 | Verizon (local phone) | Local phone company | – |
| 617-574 | Verizon (local phone) | Local phone company | – |
| 617-578 | Verizon (local phone) | Local phone company | – |
| 617-579 | Verizon (local phone) | Local phone company | – |
| 617-585 | Verizon (local phone) | Local phone company | – |
| 617-587 | Verizon (local phone) | Local phone company | – |
| 617-589 | Verizon (local phone) | Local phone company | – |
| 617-590 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 617-592 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 617-593 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 617-594 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 617-595 | Verizon Wireless | Mobile carrier | 2005 |
| 617-598 | Tc Systems | Phone company | – |
| 617-603 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 617-617 | Mass Mobile | Mobile carrier | 2025 |
| 617-619 | Verizon (local phone) | Local phone company | – |
| 617-620 | Verizon Wireless | Mobile carrier | – |
| 617-624 | Verizon (local phone) | Local phone company | – |
| 617-626 | Verizon (local phone) | Local phone company | – |
| 617-635 | Verizon (local phone) | Local phone company | – |
| 617-636 | Verizon (local phone) | Local phone company | – |
| 617-638 | Verizon (local phone) | Local phone company | – |
| 617-643 | Verizon (local phone) | Local phone company | 2001 |
| 617-645 | Verizon Wireless | Mobile carrier | – |
| 617-646 | Tc Systems | Phone company | – |
| 617-648 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 617-650 | AT&T Mobility | Mobile carrier | – |
| 617-654 | Verizon (local phone) | Local phone company | – |
| 617-655 | Onvoy | Internet / business phone carrier | 2019 |
| 617-662 | Verizon (local phone) | Local phone company | – |
| 617-664 | Verizon (local phone) | Local phone company | – |
| 617-670 | Rcn Telecom Services | Phone company | – |
| 617-671 | T-Mobile (including Sprint) | Mobile carrier | 2004 |
| 617-672 | Tc Systems | Phone company | 2008 |
| 617-680 | Verizon Wireless | Mobile carrier | – |
| 617-683 | Verizon (local phone) | Local phone company | – |
| 617-686 | Verizon Wireless | Mobile carrier | – |
| 617-692 | Tc Systems | Phone company | – |
| 617-694 | Verizon Wireless | Mobile carrier | – |
| 617-695 | Verizon (local phone) | Local phone company | – |
| 617-697 | AT&T Mobility | Mobile carrier | – |
| 617-699 | Verizon Wireless | Mobile carrier | – |
| 617-717 | Tc Systems | Phone company | – |
| 617-719 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 617-720 | Verizon (local phone) | Local phone company | – |
| 617-721 | Verizon Wireless | Mobile carrier | – |
| 617-722 | Verizon (local phone) | Local phone company | – |
| 617-723 | Verizon (local phone) | Local phone company | – |
| 617-724 | Verizon (local phone) | Local phone company | – |
| 617-725 | Verizon (local phone) | Local phone company | – |
| 617-726 | Verizon (local phone) | Local phone company | – |
| 617-727 | Verizon (local phone) | Local phone company | – |
| 617-728 | Verizon (local phone) | Local phone company | – |
| 617-733 | Verizon Wireless | Mobile carrier | – |
| 617-737 | Verizon (local phone) | Local phone company | – |
| 617-742 | Verizon (local phone) | Local phone company | – |
| 617-743 | Verizon (local phone) | Local phone company | – |
| 617-747 | Tc Systems | Phone company | – |
| 617-748 | Verizon (local phone) | Local phone company | – |
| 617-753 | Verizon (local phone) | Local phone company | – |
| 617-755 | AT&T Mobility | Mobile carrier | – |
| 617-756 | MetroPCS (T-Mobile) | Mobile carrier | 2007 |
| 617-757 | Verizon (local phone) | Local phone company | – |
| 617-760 | Verizon (local phone) | Local phone company | – |
| 617-763 | AT&T Mobility | Mobile carrier | – |
| 617-772 | Verizon (local phone) | Local phone company | – |
| 617-777 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 617-778 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 617-780 | Verizon Wireless | Mobile carrier | – |
| 617-784 | AT&T Mobility | Mobile carrier | – |
| 617-785 | T-Mobile (including Sprint) | Mobile carrier | 2004 |
| 617-788 | Verizon (local phone) | Local phone company | – |
| 617-790 | Verizon (local phone) | Local phone company | – |
| 617-794 | AT&T Mobility | Mobile carrier | – |
| 617-799 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 617-807 | Windstream (PAETEC) | Internet / business phone carrier | 2010 |
| 617-816 | AT&T Mobility | Mobile carrier | – |
| 617-818 | T-Mobile (including Sprint) | Mobile carrier | – |
| 617-820 | Level 3 (Lumen) | Internet / business phone carrier | 2004 |
| 617-823 | Verizon Wireless | Mobile carrier | – |
| 617-824 | Tc Systems | Phone company | – |
| 617-828 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 617-830 | Tpx Communications | Internet / business phone carrier | 2005 |
| 617-832 | Verizon (local phone) | Local phone company | – |
| 617-834 | AT&T Mobility | Mobile carrier | – |
| 617-835 | Verizon Wireless | Mobile carrier | – |
| 617-838 | AT&T Mobility | Mobile carrier | – |
| 617-839 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 617-840 | AT&T Mobility | Mobile carrier | – |
| 617-848 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 617-849 | AT&T Mobility | Mobile carrier | 2006 |
| 617-850 | Tc Systems | Phone company | – |
| 617-851 | Verizon Wireless | Mobile carrier | – |
| 617-854 | Verizon (local phone) | Local phone company | – |
| 617-856 | Verizon (local phone) | Local phone company | – |
| 617-859 | Verizon (local phone) | Local phone company | – |
| 617-861 | Verizon Wireless | Mobile carrier | – |
| 617-865 | Bandwidth | Internet / business phone carrier | – |
| 617-867 | Verizon (local phone) | Local phone company | – |
| 617-869 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 617-872 | Verizon Wireless | Mobile carrier | – |
| 617-875 | Verizon Wireless | Mobile carrier | – |
| 617-877 | Verizon Wireless | Mobile carrier | – |
| 617-878 | Verizon (local phone) | Local phone company | – |
| 617-880 | Tc Systems | Phone company | – |
| 617-885 | Mobilesphere | Mobile carrier | 2023 |
| 617-888 | T-Mobile (including Sprint) | Mobile carrier | 2005 |
| 617-892 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 617-894 | Verizon Wireless | Mobile carrier | 2004 |
| 617-896 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 617-897 | Verizon (local phone) | Local phone company | – |
| 617-901 | AT&T Mobility | Mobile carrier | – |
| 617-904 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 617-908 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 617-912 | Tc Systems | Phone company | – |
| 617-918 | Verizon (local phone) | Local phone company | – |
| 617-919 | Verizon (local phone) | Local phone company | – |
| 617-921 | Verizon Wireless | Mobile carrier | – |
| 617-927 | Verizon (local phone) | Local phone company | – |
| 617-933 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 617-936 | Windstream (PAETEC) | Internet / business phone carrier | 2011 |
| 617-937 | Verizon (local phone) | Local phone company | – |
| 617-938 | Level 3 (Lumen) | Internet / business phone carrier | 2004 |
| 617-939 | Verizon Wireless | Mobile carrier | – |
| 617-943 | AT&T Mobility | Mobile carrier | – |
| 617-946 | Verizon (local phone) | Local phone company | – |
| 617-947 | Verizon Wireless | Mobile carrier | – |
| 617-948 | Rcn Telecom Services | Phone company | – |
| 617-951 | Verizon (local phone) | Local phone company | – |
| 617-954 | Verizon (local phone) | Local phone company | – |
| 617-956 | Verizon (local phone) | Local phone company | – |
| 617-959 | T-Mobile (including Sprint) | Mobile carrier | 2004 |
| 617-960 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 617-961 | Verizon (local phone) | Local phone company | 2001 |
| 617-963 | T-Mobile (including Sprint) | Mobile carrier | 2007 |
| 617-973 | Verizon (local phone) | Local phone company | – |
| 617-982 | T-Mobile (including Sprint) | Mobile carrier | – |
| 617-986 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 617-988 | Verizon (local phone) | Local phone company | – |
| 617-994 | Verizon (local phone) | Local phone company | – |
| 857-200 | Verizon Wireless | Mobile carrier | 2011 |
| 857-202 | Verizon Wireless | Mobile carrier | 2011 |
| 857-204 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 857-205 | AT&T Mobility | Mobile carrier | 2001 |
| 857-206 | Verizon Wireless | Mobile carrier | 2011 |
| 857-207 | Verizon Wireless | Mobile carrier | 2007 |
| 857-208 | Verizon Wireless | Mobile carrier | 2012 |
| 857-210 | T-Mobile (including Sprint) | Mobile carrier | 2011 |
| 857-213 | Windstream (PAETEC) | Internet / business phone carrier | 2011 |
| 857-214 | Verizon Wireless | Mobile carrier | 2011 |
| 857-221 | MetroPCS (T-Mobile) | Mobile carrier | 2005 |
| 857-222 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 857-223 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 857-224 | Verizon (local phone) | Local phone company | 2009 |
| 857-233 | T-Mobile (including Sprint) | Mobile carrier | 2006 |
| 857-236 | MetroPCS (T-Mobile) | Mobile carrier | 2008 |
| 857-237 | MetroPCS (T-Mobile) | Mobile carrier | 2009 |
| 857-238 | Verizon (local phone) | Local phone company | 2007 |
| 857-239 | Onvoy | Internet / business phone carrier | – |
| 857-241 | Level 3 (Lumen) | Internet / business phone carrier | 2006 |
| 857-243 | Onvoy | Internet / business phone carrier | 2009 |
| 857-244 | Bandwidth | Internet / business phone carrier | 2008 |
| 857-246 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 857-247 | MetroPCS (T-Mobile) | Mobile carrier | 2009 |
| 857-248 | Verizon Wireless | Mobile carrier | 2012 |
| 857-249 | MetroPCS (T-Mobile) | Mobile carrier | 2008 |
| 857-250 | T-Mobile (including Sprint) | Mobile carrier | 2011 |
| 857-251 | MetroPCS (T-Mobile) | Mobile carrier | 2008 |
| 857-254 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 857-258 | MetroPCS (T-Mobile) | Mobile carrier | 2010 |
| 857-260 | Verizon Wireless | Mobile carrier | 2012 |
| 857-261 | MetroPCS (T-Mobile) | Mobile carrier | 2011 |
| 857-262 | Verizon Wireless | Mobile carrier | 2015 |
| 857-263 | Verizon Wireless | Mobile carrier | 2011 |
| 857-264 | T-Mobile (including Sprint) | Mobile carrier | 2010 |
| 857-265 | AT&T Mobility | Mobile carrier | 2011 |
| 857-266 | MetroPCS (T-Mobile) | Mobile carrier | 2010 |
| 857-268 | Verizon Wireless | Mobile carrier | 2011 |
| 857-272 | AT&T Mobility | Mobile carrier | 2006 |
| 857-274 | Verizon Wireless | Mobile carrier | 2016 |
| 857-275 | Verizon Wireless | Mobile carrier | 2015 |
| 857-276 | Verizon Wireless | Mobile carrier | 2015 |
| 857-277 | T-Mobile (including Sprint) | Mobile carrier | 2006 |
| 857-278 | Verizon Wireless | Mobile carrier | 2015 |
| 857-282 | Verizon (local phone) | Local phone company | 2015 |
| 857-283 | Verizon Wireless | Mobile carrier | 2017 |
| 857-284 | T-Mobile (including Sprint) | Mobile carrier | 2008 |
| 857-286 | Verizon Wireless | Mobile carrier | 2017 |
| 857-287 | MetroPCS (T-Mobile) | Mobile carrier | 2017 |
| 857-288 | MCImetro (Verizon Business) | Internet / business phone carrier | 2006 |
| 857-289 | Onvoy | Internet / business phone carrier | 2017 |
| 857-291 | Verizon Wireless | Mobile carrier | 2017 |
| 857-292 | Verizon Wireless | Mobile carrier | 2017 |
| 857-294 | Verizon Wireless | Mobile carrier | 2007 |
| 857-295 | Verizon Wireless | Mobile carrier | 2017 |
| 857-296 | Level 3 (Lumen) | Internet / business phone carrier | 2017 |
| 857-300 | Verizon Wireless | Mobile carrier | 2010 |
| 857-301 | Verizon Wireless | Mobile carrier | 2012 |
| 857-302 | Airus | Phone company | 2014 |
| 857-303 | Verizon Wireless | Mobile carrier | 2012 |
| 857-305 | Level 3 (Lumen) | Internet / business phone carrier | 2013 |
| 857-306 | CenturyLink / Lumen | Local phone company | 2017 |
| 857-310 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 857-312 | MetroPCS (T-Mobile) | Mobile carrier | 2008 |
| 857-313 | T-Mobile (including Sprint) | Mobile carrier | 2012 |
| 857-315 | CenturyLink / Lumen | Local phone company | 2017 |
| 857-317 | CenturyLink / Lumen | Local phone company | 2013 |
| 857-318 | MCImetro (Verizon Business) | Internet / business phone carrier | 2007 |
| 857-319 | Verizon Wireless | Mobile carrier | 2015 |
| 857-321 | Verizon Wireless | Mobile carrier | 2011 |
| 857-324 | Verizon Wireless | Mobile carrier | 2017 |
| 857-326 | Verizon Wireless | Mobile carrier | 2017 |
| 857-327 | Verizon Wireless | Mobile carrier | 2015 |
| 857-328 | Voip Innovations | Internet / business phone carrier | 2019 |
| 857-329 | Verizon Wireless | Mobile carrier | 2017 |
| 857-330 | Verizon Wireless | Mobile carrier | 2014 |
| 857-332 | Verizon Wireless | Mobile carrier | 2018 |
| 857-333 | T-Mobile (including Sprint) | Mobile carrier | 2010 |
| 857-334 | T-Mobile (including Sprint) | Mobile carrier | 2006 |
| 857-335 | Csc Wireless | Mobile carrier | 2019 |
| 857-338 | Tc Systems | Phone company | 2018 |
| 857-343 | Verizon Wireless | Mobile carrier | 2018 |
| 857-346 | Telengy | Phone company | 2018 |
| 857-347 | Advanced Telecom Solutions | Phone company | 2018 |
| 857-348 | AT&T Mobility | Mobile carrier | – |
| 857-350 | Verizon Wireless | Mobile carrier | 2007 |
| 857-353 | MCImetro (Verizon Business) | Internet / business phone carrier | 2020 |
| 857-354 | T-Mobile (including Sprint) | Mobile carrier | 2018 |
| 857-356 | T-Mobile (including Sprint) | Mobile carrier | 2019 |
| 857-360 | Verizon Wireless | Mobile carrier | 2015 |
| 857-362 | Verizon (local phone) | Local phone company | 2006 |
| 857-365 | Nuso | Internet / business phone carrier | 2020 |
| 857-366 | Verizon Wireless | Mobile carrier | 2006 |
| 857-368 | Windstream (PAETEC) | Internet / business phone carrier | 2011 |
| 857-369 | Peerless Network Of Massachusetts | Internet / business phone carrier | 2020 |
| 857-377 | Windstream (PAETEC) | Internet / business phone carrier | 2014 |
| 857-378 | Verizon (local phone) | Local phone company | 2017 |
| 857-383 | Tc Systems | Phone company | 2005 |
| 857-393 | Verizon Wireless | Mobile carrier | 2017 |
| 857-400 | Bandwidth | Internet / business phone carrier | 2010 |
| 857-406 | Verizon Wireless | Mobile carrier | 2015 |
| 857-408 | Verizon Wireless | Mobile carrier | 2015 |
| 857-409 | Verizon Wireless | Mobile carrier | 2016 |
| 857-413 | Level 3 (Lumen) | Internet / business phone carrier | 2005 |
| 857-415 | Vonage America | Internet / business phone carrier | 2013 |
| 857-416 | Tpx Communications | Internet / business phone carrier | 2022 |
| 857-417 | MetroPCS (T-Mobile) | Mobile carrier | 2008 |
| 857-427 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 857-430 | AT&T Mobility | Mobile carrier | 2024 |
| 857-431 | Wavenation | Phone company | 2025 |
| 857-433 | Shelcomm | Phone company | 2026 |
| 857-443 | Commio | Internet / business phone carrier | 2017 |
| 857-444 | Peerless Network Of Massachusetts | Internet / business phone carrier | 2010 |
| 857-445 | AT&T Mobility | Mobile carrier | 2006 |
| 857-449 | Comcast | Internet / business phone carrier | 2002 |
| 857-453 | Level 3 (Lumen) | Internet / business phone carrier | 2005 |
| 857-465 | Fractel | Internet / business phone carrier | 2020 |
| 857-472 | AT&T Mobility | Mobile carrier | 2001 |
| 857-488 | Verizon Wireless | Mobile carrier | 2005 |
| 857-491 | Lightpath Of New England | Phone company | 2021 |
| 857-504 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 857-505 | MetroPCS (T-Mobile) | Mobile carrier | 2016 |
| 857-507 | Verizon Wireless | Mobile carrier | 2016 |
| 857-557 | Hd Carrier | Internet / business phone carrier | 2019 |
| 857-579 | T-Mobile (including Sprint) | Mobile carrier | 2025 |
| 857-615 | MetroPCS (T-Mobile) | Mobile carrier | 2009 |
Showing the first 400 of 426 prefixes.
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.