Smithville, TX — rate center
- State
- Texas
- Active prefixes
- 8
- Carriers
- 7
- Pooled prefixes
- 8
- LATA
- 558
- Metro area
- Austin-Round Rock-San Marcos, TX MSA
Smithville is a telephone rate center in Texas served by area codes 512, 737. A rate center is the locality the phone industry uses to anchor numbers for billing; every prefix listed below is registered here.
The rate center currently carries 8 working prefixes, held by 7 different carriers. Pooling applies to 8 of them — individual thousands-blocks may belong to different companies.
The rate center belongs to the Austin-Round Rock-San Marcos, TX Metropolitan Statistical Area. Routing-wise it sits in LATA 558.
Because 512, 737 all serve this territory, two Smithville numbers can look completely different while being neighbors — check the prefix, not just the area code.
A Smithville prefix on caller ID is a starting point, not proof of origin — numbers travel with their owners and displays can be spoofed. Use official callback numbers for anything sensitive.
Prefixes anchored to Smithville
| Prefix | Code holder | Pooled |
|---|---|---|
| 512-237 | SOUTHWESTERN BELL | Yes |
| 512-360 | SOUTHWESTERN BELL | Yes |
| 512-575 | AT&T ENTERPRISES, LLC | Yes |
| 512-798 | MATRIX TELECOM, LLC. S/I/I TNCI - TX | Yes |
FAQ
What area code is Smithville, TX?
Smithville is served by 2 area codes — 512, 737 — which overlay the same territory.
How many prefixes does Smithville have?
8 active NXX prefixes are anchored to this rate center in NANPA records, held by 7 carriers.
Is a call from a Smithville prefix really from Smithville?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.