Phone numbers in New Ulm, Minnesota
New Ulm has 11 phone prefixes in area code 507.
Biggest holders: New Ulm Telecom, AT&T Mobility, Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 73%
- Phone company 27%
Every prefix in New Ulm
Search the first six digits of a number in this list. If it's here, the number started in New Ulm with the carrier shown. If it isn't, check the Minnesota page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 507-217 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 507-233 | New Ulm Telecom | Phone company | – |
| 507-240 | AT&T Mobility | Mobile carrier | – |
| 507-276 | Verizon Wireless | Mobile carrier | – |
| 507-354 | New Ulm Telecom | Phone company | – |
| 507-359 | New Ulm Telecom | Phone company | – |
| 507-404 | AT&T Mobility | Mobile carrier | 2002 |
| 507-441 | AT&T Mobility | Mobile carrier | 2001 |
| 507-766 | Verizon Wireless | Mobile carrier | 2004 |
| 507-887 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 507-980 | Verizon Wireless | Mobile 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.