Phone numbers in Grand Forks, North Dakota
Grand Forks has 31 phone prefixes in area code 701.
Biggest holders: CenturyLink / Lumen, AT&T Mobility, Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 39%
- Local phone company 32%
- Internet / business phone carrier 23%
- Phone company 6%
Every prefix in Grand Forks
Search the first six digits of a number in this list. If it's here, the number started in Grand Forks with the carrier shown. If it isn't, check the North Dakota page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 701-203 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 701-213 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 701-215 | AT&T Mobility | Mobile carrier | 2001 |
| 701-314 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 701-317 | Verizon Wireless | Mobile carrier | 2003 |
| 701-330 | Verizon Wireless | Mobile carrier | 2004 |
| 701-335 | CenturyLink / Lumen | Local phone company | – |
| 701-402 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 701-410 | AT&T Mobility | Mobile carrier | 2021 |
| 701-517 | Boost / Virgin Mobile | Mobile carrier | 2023 |
| 701-585 | Mlgc | Phone company | 2023 |
| 701-610 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 701-620 | AT&T Mobility | Mobile carrier | 2010 |
| 701-670 | Voxtelesys | Internet / business phone carrier | 2021 |
| 701-732 | CenturyLink / Lumen | Local phone company | – |
| 701-738 | Allstream | Internet / business phone carrier | – |
| 701-739 | AT&T Mobility | Mobile carrier | – |
| 701-740 | AT&T Mobility | Mobile carrier | – |
| 701-741 | AT&T Mobility | Mobile carrier | – |
| 701-746 | CenturyLink / Lumen | Local phone company | – |
| 701-757 | Midcontinent Communications | Phone company | 2006 |
| 701-765 | Teleport Communications America - Nd | Internet / business phone carrier | – |
| 701-772 | CenturyLink / Lumen | Local phone company | – |
| 701-775 | CenturyLink / Lumen | Local phone company | – |
| 701-777 | CenturyLink / Lumen | Local phone company | – |
| 701-780 | CenturyLink / Lumen | Local phone company | – |
| 701-787 | CenturyLink / Lumen | Local phone company | – |
| 701-792 | CenturyLink / Lumen | Local phone company | – |
| 701-795 | CenturyLink / Lumen | Local phone company | – |
| 701-864 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 701-885 | T-Mobile (including Sprint) | Mobile 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.