Rockdale, TX — rate center
Rockdale 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 11 working prefixes, held by 8 different carriers. Pooling applies to 11 of them — individual thousands-blocks may belong to different companies.
Routing-wise it sits in LATA 558.
Because 512, 737 all serve this territory, two Rockdale numbers can look completely different while being neighbors — check the prefix, not just the area code.
A Rockdale 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 Rockdale
| Prefix | Code holder | Pooled |
|---|---|---|
| 512-290 | METROPCS, INC. | Yes |
| 512-429 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | Yes |
| 512-430 | SOUTHWESTERN BELL | Yes |
| 512-446 | SOUTHWESTERN BELL | Yes |
| 512-543 | ONVOY, LLC - TX | Yes |
| 512-760 | METROPCS, INC. | Yes |
FAQ
What area code is Rockdale, TX?
Rockdale is served by 2 area codes — 512, 737 — which overlay the same territory.
How many prefixes does Rockdale have?
11 active NXX prefixes are anchored to this rate center in NANPA records, held by 8 carriers.
Is a call from a Rockdale prefix really from Rockdale?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.