| District of Texas area codes: 512 | |
|---|---|
| Country | United States |
| State/Province | Texas |
| Major City | Austin |
| Time Zone | Central (UTC-06:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 512-200 | Travis | Austin, TX | Nwire |
| 512-201 | Travis | Austin, TX | Cellco Partnership DBA Verizon Wireless |
| 512-202 | Travis | Austin, TX | Cellco Partnership DBA Verizon Wireless |
| 512-203 | Travis | Austin, TX | T-mobile Usa |
| 512-204 | Travis | Austin, TX | American Messaging (am) |
| 512-205 | Travis | Austin, TX | Usa Mobility Wireless |
| 512-206 | Travis | Austin, TX | Southwestern Bell |
| 512-207 | Travis | Austin, TX | Southwestern Bell |
| 512-208 | Travis | Austin, TX | American Messaging (am) |
| 512-209 | Travis | Austin, TX | American Messaging (am) |
| 512-212 | Caldwell | Martindale, TX | New Cingular Wireless PCS - IL |
| 512-213 | Caldwell | Lockhart, TX | Level 3 Communications |
| 512-215 | Travis | Austin, TX | Time Warner Cble Info Svc (tx) DBA Time Warner Cbl |
| 512-216 | Hays | San Marcos, TX | Cricket Communications |
| 512-217 | Travis | Austin, TX | New Cingular Wireless PCS - IL |
| 512-218 | Travis | Austin, TX | Southwestern Bell |
| 512-219 | Travis | Austin, TX | Southwestern Bell |
| 512-220 | Travis | Austin, TX | Grande Communications Networks |
| 512-221 | Travis | Austin, TX | New Cingular Wireless PCS - IL |
| 512-222 | Travis | Austin, TX | Worldcall Interconnect Inc. |
There are 759 prefixes, In the code area, the major cities are Austin, TX;Cedar Park, TX;Georgetown, TX;Round Roc. The major city is Austin.