Phone numbers in Porter Heights, Texas
Porter Heights has 6 phone prefixes in area codes 281, 346, 832.
Biggest holders: Brightspeed Of Texas, Grande Communications Networks, Fractel. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 33%
- Internet / business phone carrier 50%
- Phone company 17%
Every prefix in Porter Heights
Search the first six digits of a number in this list. If it's here, the number started in Porter Heights with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 281-429 | Brightspeed Of Texas | Local phone company | – |
| 281-503 | Grande Communications Networks | Phone company | – |
| 281-572 | Brightspeed Of Texas | Local phone company | – |
| 346-488 | Fractel | Internet / business phone carrier | 2020 |
| 346-591 | Comcast | Internet / business phone carrier | 2022 |
| 832-669 | Bandwidth | Internet / business phone 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.