Phone numbers in Herndon, Virginia
Herndon has 139 phone prefixes in area codes 571, 703.
Biggest holders: Verizon (local phone), T-Mobile (including Sprint), Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 35%
- Local phone company 25%
- Internet / business phone carrier 38%
- Phone company 1%
Every prefix in Herndon
Search the first six digits of a number in this list. If it's here, the number started in Herndon with the carrier shown. If it isn't, check the Virginia page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 571-202 | Verizon Wireless | Mobile carrier | 2023 |
| 571-203 | Verizon (local phone) | Local phone company | – |
| 571-240 | AT&T Mobility | Mobile carrier | 2023 |
| 571-250 | T-Mobile (including Sprint) | Mobile carrier | 2009 |
| 571-262 | MCImetro (Verizon Business) | Internet / business phone carrier | 2002 |
| 571-266 | MCImetro (Verizon Business) | Internet / business phone carrier | 2008 |
| 571-267 | T-Mobile (including Sprint) | Mobile carrier | – |
| 571-283 | T-Mobile (including Sprint) | Mobile carrier | – |
| 571-287 | Verizon Wireless | Mobile carrier | 2008 |
| 571-299 | Windstream (PAETEC) | Internet / business phone carrier | 2008 |
| 571-304 | Verizon (local phone) | Local phone company | 2014 |
| 571-306 | Bandwidth | Internet / business phone carrier | 2010 |
| 571-313 | Comcast | Internet / business phone carrier | 2006 |
| 571-315 | T-Mobile (including Sprint) | Mobile carrier | 2008 |
| 571-323 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 571-324 | MCImetro (Verizon Business) | Internet / business phone carrier | 2017 |
| 571-325 | MCImetro (Verizon Business) | Internet / business phone carrier | 2013 |
| 571-334 | Verizon Wireless | Mobile carrier | 2001 |
| 571-342 | Verizon Wireless | Mobile carrier | 2015 |
| 571-346 | Verizon Wireless | Mobile carrier | 2009 |
| 571-352 | AT&T Mobility | Mobile carrier | 2015 |
| 571-353 | Verizon Wireless | Mobile carrier | 2011 |
| 571-362 | MCImetro (Verizon Business) | Internet / business phone carrier | 2017 |
| 571-375 | MCImetro (Verizon Business) | Internet / business phone carrier | 2012 |
| 571-376 | T-Mobile (including Sprint) | Mobile carrier | – |
| 571-387 | MCImetro (Verizon Business) | Internet / business phone carrier | 2018 |
| 571-392 | MCImetro (Verizon Business) | Internet / business phone carrier | 2011 |
| 571-401 | MCImetro (Verizon Business) | Internet / business phone carrier | 2018 |
| 571-426 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 571-430 | T-Mobile (including Sprint) | Mobile carrier | 2020 |
| 571-434 | Verizon (local phone) | Local phone company | – |
| 571-436 | T-Mobile (including Sprint) | Mobile carrier | – |
| 571-437 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 571-441 | Peerless Network Of Virginia | Internet / business phone carrier | 2012 |
| 571-443 | T-Mobile (including Sprint) | Mobile carrier | 2017 |
| 571-446 | Level 3 (Lumen) | Internet / business phone carrier | 2014 |
| 571-449 | Verizon Wireless | Mobile carrier | 2008 |
| 571-464 | T-Mobile (including Sprint) | Mobile carrier | 2019 |
| 571-471 | AT&T Mobility | Mobile carrier | 2009 |
| 571-484 | T-Mobile (including Sprint) | Mobile carrier | 2006 |
| 571-485 | Verizon Wireless | Mobile carrier | 2008 |
| 571-500 | Onvoy | Internet / business phone carrier | 2018 |
| 571-508 | T-Mobile (including Sprint) | Mobile carrier | 2018 |
| 571-514 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 571-519 | T-Mobile (including Sprint) | Mobile carrier | 2020 |
| 571-520 | Onvoy | Internet / business phone carrier | 2020 |
| 571-521 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 571-523 | T-Mobile (including Sprint) | Mobile carrier | 2018 |
| 571-524 | AT&T Mobility | Mobile carrier | 2014 |
| 571-525 | Airus | Phone company | 2015 |
| 571-526 | Onvoy | Internet / business phone carrier | – |
| 571-537 | MCImetro (Verizon Business) | Internet / business phone carrier | 2019 |
| 571-539 | MCImetro (Verizon Business) | Internet / business phone carrier | 2019 |
| 571-548 | Verizon Wireless | Mobile carrier | 2022 |
| 571-563 | Onvoy | Internet / business phone carrier | 2022 |
| 571-586 | Onvoy | Internet / business phone carrier | 2022 |
| 571-597 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 571-599 | Verizon Wireless | Mobile carrier | 2014 |
| 571-612 | Verizon Wireless | Mobile carrier | 2010 |
| 571-638 | Teleport Communications America | Internet / business phone carrier | 2023 |
| 571-643 | Verizon (local phone) | Local phone company | 2001 |
| 571-665 | MCImetro (Verizon Business) | Internet / business phone carrier | 2015 |
| 571-685 | T-Mobile (including Sprint) | Mobile carrier | 2018 |
| 571-693 | AT&T Mobility | Mobile carrier | 2024 |
| 571-715 | Onvoy | Internet / business phone carrier | 2024 |
| 571-720 | Onvoy | Internet / business phone carrier | 2025 |
| 571-743 | Onvoy | Internet / business phone carrier | 2025 |
| 571-752 | Verizon Wireless | Mobile carrier | 2018 |
| 571-759 | CenturyLink / Lumen | Local phone company | 2026 |
| 571-776 | T-Mobile (including Sprint) | Mobile carrier | 2019 |
| 571-782 | AT&T Mobility | Mobile carrier | 2026 |
| 571-786 | Fractel | Internet / business phone carrier | 2020 |
| 571-910 | Onvoy | Internet / business phone carrier | 2021 |
| 571-926 | Verizon Wireless | Mobile carrier | 2006 |
| 703-230 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 703-234 | Teleport Communications America | Internet / business phone carrier | – |
| 703-263 | Verizon (local phone) | Local phone company | – |
| 703-282 | Verizon Wireless | Mobile carrier | – |
| 703-376 | Teleport Communications America | Internet / business phone carrier | – |
| 703-378 | Verizon (local phone) | Local phone company | – |
| 703-390 | Verizon (local phone) | Local phone company | – |
| 703-391 | Verizon (local phone) | Local phone company | – |
| 703-421 | Verizon (local phone) | Local phone company | – |
| 703-429 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 703-430 | Verizon (local phone) | Local phone company | – |
| 703-433 | Verizon (local phone) | Local phone company | – |
| 703-434 | Starpower Communications | Phone company | – |
| 703-435 | Verizon (local phone) | Local phone company | – |
| 703-437 | Verizon (local phone) | Local phone company | – |
| 703-439 | Teleport Communications America | Internet / business phone carrier | – |
| 703-444 | Verizon (local phone) | Local phone company | – |
| 703-463 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 703-464 | Verizon (local phone) | Local phone company | – |
| 703-466 | Verizon (local phone) | Local phone company | 2004 |
| 703-467 | Verizon (local phone) | Local phone company | – |
| 703-476 | Verizon (local phone) | Local phone company | – |
| 703-480 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 703-481 | Verizon (local phone) | Local phone company | – |
| 703-483 | Verizon Wireless | Mobile carrier | 2005 |
| 703-488 | Verizon (local phone) | Local phone company | – |
| 703-547 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 703-579 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 703-581 | Verizon (local phone) | Local phone company | – |
| 703-657 | Verizon Wireless | Mobile carrier | 2006 |
| 703-668 | Verizon (local phone) | Local phone company | 2001 |
| 703-673 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 703-674 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 703-689 | Verizon (local phone) | Local phone company | – |
| 703-707 | Verizon (local phone) | Local phone company | – |
| 703-773 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 703-774 | Comcast | Internet / business phone carrier | – |
| 703-787 | Verizon (local phone) | Local phone company | – |
| 703-793 | Verizon (local phone) | Local phone company | – |
| 703-796 | Verizon (local phone) | Local phone company | – |
| 703-804 | IP Horizon | Internet / business phone carrier | 2024 |
| 703-814 | Verizon (local phone) | Local phone company | – |
| 703-817 | Verizon (local phone) | Local phone company | – |
| 703-826 | Verizon (local phone) | Local phone company | – |
| 703-856 | T-Mobile (including Sprint) | Mobile carrier | – |
| 703-860 | Verizon (local phone) | Local phone company | – |
| 703-870 | T-Mobile (including Sprint) | Mobile carrier | 2006 |
| 703-871 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 703-880 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 703-885 | Teleport Communications America | Internet / business phone carrier | – |
| 703-889 | Verizon (local phone) | Local phone company | 2005 |
| 703-926 | T-Mobile (including Sprint) | Mobile carrier | – |
| 703-930 | T-Mobile (including Sprint) | Mobile carrier | – |
| 703-932 | T-Mobile (including Sprint) | Mobile carrier | – |
| 703-935 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 703-939 | Verizon Wireless | Mobile carrier | 2007 |
| 703-943 | Verizon Wireless | Mobile carrier | – |
| 703-949 | Teleport Communications America | Internet / business phone carrier | 2011 |
| 703-953 | T-Mobile (including Sprint) | Mobile carrier | 2005 |
| 703-955 | Verizon Wireless | Mobile carrier | 2005 |
| 703-956 | MCImetro (Verizon Business) | Internet / business phone carrier | 2005 |
| 703-961 | Verizon (local phone) | Local phone company | – |
| 703-964 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 703-984 | Verizon (local phone) | Local phone company | 2004 |
| 703-994 | Level 3 (Lumen) | Internet / business phone carrier | – |
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.