Texas, United States
Central Time
12:23 AM
Area Code
512
State / Province
Texas
Country
United States
Time Zone
Central Time
Area code 512 covers 48 cities and communities across Texas, based on telephone company rate center data.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+15125550100">+15125550100</a><a href="tel:+15125550199">+15125550199</a>Look up which exchange in Texas a specific 512 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
783 active prefixes in this area code, assigned as 6,011 thousands-blocks — pooling splits one prefix across several carriers, so each block is listed separately with the rate centre it is homed to, its carrier of record, and the switch that serves it.
Showing blocks 1–100 of 6,011
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 512-200 | 0 | Austin | Wireless | WORLDCALL INTERCONNECT INC. (139F) | AUSTTX92X0X | 558 | — | — |
| 512-200 | 1 | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-200 | 2 | Austin | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - TX (004F) | AUSYTXFC1MD | 558 | — | — |
| 512-200 | 3 | Austin | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - TX (004F) | AUSYTXFC1MD | 558 | — | — |
| 512-200 | 4 | Austin | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - TX (004F) | AUSYTXFC1MD | 558 | — | — |
| 512-200 | 5 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-200 | 6 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-200 | 7 | Austin | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - TX (004F) | AUSYTXFC1MD | 558 | — | — |
| 512-200 | 8 | Austin | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - TX (004F) | AUSYTXFC1MD | 558 | — | — |
| 512-200 | 9 | Austin | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - TX (004F) | AUSYTXFC1MD | 558 | — | — |
| 512-200 | A | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-201 | 0 | Austin | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | AUSUTXNIGT3 | 558 | — | — |
| 512-201 | 1 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 512-201 | 2 | Austin | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 512-201 | 3 | Austin | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | AUSUTXNIGT3 | 558 | — | — |
| 512-201 | 4 | Austin | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 512-201 | 5 | Austin | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | AUSUTXNIGT3 | 558 | — | — |
| 512-201 | 6 | Austin | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 512-201 | 7 | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-201 | 8 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 512-201 | 9 | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-201 | A | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-202 | 0 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-202 | 1 | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-202 | 2 | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-202 | 3 | Austin | Landline or VoIP | CSC VOICE, LLC (612K) | — | 558 | — | — |
| 512-202 | 4 | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-202 | 5 | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-202 | 6 | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-202 | 7 | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-202 | 8 | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-202 | 9 | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-202 | A | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-203 | 0 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-203 | 1 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-203 | 2 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-203 | 3 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-203 | 4 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-203 | 5 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-203 | 6 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-203 | 7 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-203 | 8 | Austin | Landline or VoIP | METROPCS, INC. (5562) | AUSWTXGXBMD | 558 | — | — |
| 512-203 | 9 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-203 | A | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-204 | A | Austin | Wireless | AMERICAN MESSAGING SERVICES, LLC (9748) | AUSTTXGRX8Y | 558 | — | — |
| 512-205 | A | Austin | Landline or VoIP | SPOK, INC. (6630) | AUSVTXDK1MD | 558 | — | — |
| 512-206 | 0 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-206 | 1 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-206 | 2 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-206 | 3 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-206 | 4 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-206 | 5 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-206 | 6 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-206 | 7 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-206 | 8 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-206 | 9 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-206 | A | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-207 | 0 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 512-207 | 1 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-207 | 2 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-207 | 3 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-207 | 4 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-207 | 5 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-207 | 6 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-207 | 7 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-207 | 8 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-207 | 9 | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-207 | A | Austin | Landline | SOUTHWESTERN BELL (9533) | Homestead | 558 | — | — |
| 512-208 | A | Austin | Wireless | AMERICAN MESSAGING SERVICES, LLC (9748) | AUSTTXGRX8Y | 558 | — | — |
| 512-209 | A | Austin | Wireless | AMERICAN MESSAGING SERVICES, LLC (9748) | AUSTTXGRX8Y | 558 | — | — |
| 512-210 | 0 | San Marcos | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGX3MD | 558 | — | — |
| 512-210 | 1 | San Marcos | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGX3MD | 558 | — | — |
| 512-210 | 2 | San Marcos | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | AUSUTXNIGT3 | 558 | — | — |
| 512-210 | 3 | San Marcos | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | AUSUTXNIGT3 | 558 | — | — |
| 512-210 | 4 | San Marcos | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | AUSUTXNIGT3 | 558 | — | — |
| 512-210 | 5 | San Marcos | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGX3MD | 558 | — | — |
| 512-210 | 6 | San Marcos | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGX3MD | 558 | — | — |
| 512-210 | 7 | San Marcos | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGX3MD | 558 | — | — |
| 512-210 | 8 | San Marcos | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | AUSXTXZR0MD | 558 | — | — |
| 512-210 | 9 | San Marcos | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-210 | A | San Marcos | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-212 | 0 | Martindale | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SMRCTXXAJMD | 558 | — | — |
| 512-212 | 1 | Martindale | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 512-212 | 2 | Martindale | Wireless | WORLDCALL INTERCONNECT INC. (139F) | AUSTTX92X0X | 558 | — | — |
| 512-212 | 3 | Martindale | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 512-212 | 4 | Martindale | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 512-212 | 5 | Martindale | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 512-212 | 6 | Martindale | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SMRCTXXAJMD | 558 | — | — |
| 512-212 | 7 | Martindale | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 512-212 | 8 | Martindale | Landline or VoIP | CENTURYLINK COMMUNICATIONS, LLC (508J) | SMRCTXXAKMD | 558 | — | — |
| 512-212 | 9 | Martindale | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 512-212 | A | Martindale | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SMRCTXXAJMD | 558 | — | — |
| 512-213 | 0 | Lockhart | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 512-213 | 1 | Lockhart | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 512-213 | 2 | Lockhart | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 512-213 | 3 | Lockhart | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | AUSTTXEE7MD | 558 | — | — |
| 512-213 | 4 | Lockhart | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 512-213 | 5 | Lockhart | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 512-213 | 6 | Lockhart | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 512-213 | 7 | Lockhart | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
783
Assignment Blocks
6,011
Rate Centers
48
Carriers of Record
42
| Type | Blocks | Share |
|---|---|---|
| Landline | 1,434 | 24% |
| Landline or VoIP | 2,466 | 41% |
| Wireless | 2,111 | 35% |
| Carrier | Blocks |
|---|---|
| SOUTHWESTERN BELL | 1,168 |
| T-MOBILE USA, INC. | 843 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 791 |
| ONVOY, LLC - TX | 412 |
| BANDWIDTH.COM CLEC, LLC - TX | 410 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 395 |
| LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 298 |
| LEVEL 3 COMMUNICATIONS, LLC - TX | 263 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 225 |
| FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 182 |
| 32 other carriers | 1,024 |
Carrier of record for each block. Numbers ported to another carrier keep their original block assignment, so this is not a lookup of who serves a given number today.
| Rate Center | Prefixes | Blocks |
|---|---|---|
| Austin | 585 | 4,105 |
| San Marcos | 26 | 206 |
| Georgetown | 24 | 244 |
| Bastrop | 15 | 155 |
| Leander | 12 | 102 |
| Lockhart | 9 | 89 |
| Burnet | 8 | 88 |
| Lampasas | 6 | 56 |
| Rockdale | 6 | 66 |
| Taylor | 6 | 56 |
| Georgetown PPCP | 5 | 45 |
| Bastrop EMS | 4 | 24 |
| Buchanan Dam | 4 | 44 |
| Jarrell | 4 | 34 |
| Kyle PPCP | 4 | 24 |
| Wimberley | 4 | 34 |
| Adamsville | 3 | 33 |
| Bertram | 3 | 33 |
| Buda | 3 | 33 |
| Dale/Lytton Springs | 3 | 33 |
| Elgin | 3 | 33 |
| Lometa | 3 | 13 |
| Milano | 3 | 23 |
| Paige | 3 | 33 |
| Smithville | 3 | 33 |
| Buda PPCP | 2 | 22 |
| Dripping Springs | 2 | 22 |
| Dripping Springs PPCP | 2 | 22 |
| Hutto | 2 | 22 |
| Kempner | 2 | 22 |
| Kyle | 2 | 22 |
| Liberty Hill | 2 | 22 |
| Lockhart EMS | 2 | 22 |
| Martindale | 2 | 21 |
| McDade | 2 | 22 |
| Thorndale-Thrall | 2 | 21 |
| Briggs | 1 | 11 |
| Coupland | 1 | 11 |
| Dale/Lytton Springs EMS | 1 | 11 |
| Elgin EMS | 1 | 11 |
| Fentress | 1 | 11 |
| Granger | 1 | 11 |
| Hutto EMS | 1 | 11 |
| Liberty Hill EACS | 1 | 11 |
| San Gabriel | 1 | 11 |
| Smithville EMS | 1 | 11 |
| Taylor EMS | 1 | 11 |
| Wimberley PPCP | 1 | 11 |
A rate center is the telephone exchange area a number is homed to. It sets local calling boundaries, and is not the caller's current location.
Area code 512 is a North American Numbering Plan (NANP) telephone area code assigned to Texas, United States. It is one of 29 area codes serving Texas. As population and demand for phone numbers grew, the region was divided into multiple numbering plan areas to avoid exhausting the available 7-digit number pool.
Yes. 512 is an active North American Numbering Plan (NANP) area code, currently assigned to Texas, United States. It is safe to answer or dial calls using this area code.
Area code 512 covers 48 cities and communities in Texas, including Adamsville, Austin, Bastrop, Bastrop Ems, Bertram, and 43 more localities. This is based on telephone company rate center data — the geographic areas carriers use to determine local calling boundaries and to assign numbers when a business or individual requests a phone number in a specific city.
All numbers in the 512 area code observe Central Time (IANA timezone: America/Chicago). Central Time is UTC−6 in winter (CST) and UTC−5 in summer (CDT). When placing a call to a 512 number from a different time zone, check the current local time above to avoid calling outside of business hours.
From within Texas, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 512 + 7-digit number for long-distance calls within North America. From outside the US or Canada, dial your country's international exit code followed by 1 512 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 512 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +15125550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.