Phone numbers in Bismarck, North Dakota
Bismarck has 55 phone prefixes in area code 701.
Biggest holders: CenturyLink / Lumen, AT&T Mobility, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 25%
- Local phone company 27%
- Internet / business phone carrier 42%
- Phone company 5%
Every prefix in Bismarck
Search the first six digits of a number in this list. If it's here, the number started in Bismarck with the carrier shown. If it isn't, check the North Dakota page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 701-202 | AT&T Mobility | Mobile carrier | – |
| 701-204 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 701-214 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 701-220 | AT&T Mobility | Mobile carrier | – |
| 701-221 | CenturyLink / Lumen | Local phone company | – |
| 701-222 | CenturyLink / Lumen | Local phone company | – |
| 701-223 | CenturyLink / Lumen | Local phone company | – |
| 701-224 | CenturyLink / Lumen | Local phone company | – |
| 701-226 | Verizon Wireless | Mobile carrier | – |
| 701-250 | CenturyLink / Lumen | Local phone company | – |
| 701-255 | CenturyLink / Lumen | Local phone company | – |
| 701-258 | CenturyLink / Lumen | Local phone company | – |
| 701-299 | Commio | Internet / business phone carrier | 2020 |
| 701-319 | Twilio | Internet / business phone carrier | – |
| 701-323 | CenturyLink / Lumen | Local phone company | – |
| 701-328 | CenturyLink / Lumen | Local phone company | – |
| 701-333 | Onvoy | Internet / business phone carrier | – |
| 701-354 | Teleport Communications America - Nd | Internet / business phone carrier | 2012 |
| 701-355 | Boost / Virgin Mobile | Mobile carrier | – |
| 701-390 | AT&T Mobility | Mobile carrier | – |
| 701-391 | AT&T Mobility | Mobile carrier | – |
| 701-400 | AT&T Mobility | Mobile carrier | – |
| 701-401 | Onvoy | Internet / business phone carrier | 2017 |
| 701-415 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 701-425 | Onvoy | Internet / business phone carrier | 2006 |
| 701-426 | Verizon Wireless | Mobile carrier | – |
| 701-450 | Onvoy | Internet / business phone carrier | 2018 |
| 701-471 | Verizon Wireless | Mobile carrier | – |
| 701-498 | Telnyx | Internet / business phone carrier | 2016 |
| 701-516 | AT&T (local phone) | Local phone company | – |
| 701-518 | Comcast | Internet / business phone carrier | 2023 |
| 701-527 | AT&T Mobility | Mobile carrier | 2001 |
| 701-530 | CenturyLink / Lumen | Local phone company | – |
| 701-557 | MCImetro (Verizon Business) | Internet / business phone carrier | 2004 |
| 701-595 | Verizon Wireless | Mobile carrier | – |
| 701-606 | Wavenation | Phone company | 2025 |
| 701-663 | CenturyLink / Lumen | Local phone company | – |
| 701-667 | CenturyLink / Lumen | Local phone company | – |
| 701-712 | Onvoy | Internet / business phone carrier | – |
| 701-751 | Midcontinent Communications | Phone company | 2005 |
| 701-791 | Hd Carrier | Internet / business phone carrier | 2019 |
| 701-801 | Wide Voice | Phone company | 2014 |
| 701-805 | Peerless Network Of North Dakota | Internet / business phone carrier | 2014 |
| 701-877 | Terra Nova Telecom | Internet / business phone carrier | 2019 |
| 701-934 | AT&T (local phone) | Local phone company | – |
| 701-946 | CenturyLink / Lumen | Local phone company | 2016 |
| 701-954 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 701-955 | Nuso | Internet / business phone carrier | 2013 |
| 701-957 | Csc Wireless | Mobile carrier | 2019 |
| 701-961 | Vonage America | Internet / business phone carrier | 2019 |
| 701-975 | Onvoy | Internet / business phone carrier | 2017 |
| 701-979 | Nuso | Internet / business phone carrier | 2020 |
| 701-986 | Bandwidth | Internet / business phone carrier | 2024 |
| 701-989 | AT&T Mobility | Mobile carrier | 2010 |
| 701-994 | IP Horizon | Internet / business phone carrier | 2025 |
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.