Phone numbers in Sosioux City, Nebraska
Sosioux City has 10 phone prefixes in area codes 402, 531.
Biggest holders: CenturyLink / Lumen, AT&T Mobility, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 40%
- Local phone company 30%
- Phone company 30%
Every prefix in Sosioux City
Search the first six digits of a number in this list. If it's here, the number started in Sosioux City with the carrier shown. If it isn't, check the Nebraska page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 402-241 | CenturyLink / Lumen | Local phone company | – |
| 402-404 | Long Lines Siouxland | Phone company | 2007 |
| 402-412 | Imon Communications | Phone company | 2002 |
| 402-494 | CenturyLink / Lumen | Local phone company | – |
| 402-508 | AT&T Mobility | Mobile carrier | 2014 |
| 402-987 | CenturyLink / Lumen | Local phone company | – |
| 531-265 | AT&T Mobility | Mobile carrier | 2021 |
| 531-349 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 531-531 | Ahoi | Phone company | 2026 |
| 531-625 | T-Mobile (including Sprint) | Mobile carrier | 2019 |
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.