Phone numbers in Bulverde, Texas
Bulverde has 6 phone prefixes in area code 830.
Biggest holders: Guadalupe Valley Tel. Coop, AT&T Mobility, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 17%
- Internet / business phone carrier 50%
- Phone company 33%
Every prefix in Bulverde
Search the first six digits of a number in this list. If it's here, the number started in Bulverde with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 830-252 | AT&T Mobility | Mobile carrier | 2020 |
| 830-380 | Onvoy | Internet / business phone carrier | 2021 |
| 830-438 | Guadalupe Valley Tel. Coop | Phone company | – |
| 830-714 | Charter / Spectrum | Internet / business phone carrier | – |
| 830-835 | Twilio | Internet / business phone carrier | 2024 |
| 830-980 | Guadalupe Valley Tel. Coop | Phone company | – |
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.