Phone numbers in Robstown, Texas
Robstown has 10 phone prefixes in area code 361.
Biggest holders: Level 3 (Lumen), Frontier, MetroPCS (T-Mobile). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 30%
- Local phone company 20%
- Internet / business phone carrier 50%
Every prefix in Robstown
Search the first six digits of a number in this list. If it's here, the number started in Robstown with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 361-236 | Level 3 (Lumen) | Internet / business phone carrier | 2003 |
| 361-310 | Onvoy | Internet / business phone carrier | – |
| 361-387 | Frontier | Local phone company | – |
| 361-421 | Stpcs Joint Venture | Mobile carrier | 2025 |
| 361-426 | MetroPCS (T-Mobile) | Mobile carrier | 2013 |
| 361-726 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 361-752 | Level 3 (Lumen) | Internet / business phone carrier | 2006 |
| 361-767 | Frontier | Local phone company | – |
| 361-933 | Charter / Spectrum | Internet / business phone carrier | 2002 |
| 361-966 | Fractel | Internet / business phone carrier | 2021 |
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.