Texas, United States
Central Time
12:23 AM
Area Code
737
State / Province
Texas
Country
United States
Time Zone
Central Time
Area code 737 covers 35 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:+17375550100">+17375550100</a><a href="tel:+17375550199">+17375550199</a>Look up which exchange in Texas a specific 737 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
330 active prefixes in this area code, assigned as 3,445 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 3,445
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 737-200 | 0 | Elgin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-200 | 1 | Elgin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-200 | 2 | Elgin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-200 | 3 | Elgin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-200 | 4 | Elgin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-200 | 5 | Elgin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-200 | 6 | Elgin | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - TX (7138) | AUSTTXGR09Z | 558 | — | — |
| 737-200 | 7 | Elgin | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | AUSTIN | 558 | — | — |
| 737-200 | 8 | Elgin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-200 | 9 | Elgin | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | AUSUTXNIGT3 | 558 | — | — |
| 737-200 | A | Elgin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-201 | 0 | Taylor | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-201 | 1 | Taylor | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-201 | 2 | Taylor | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-201 | 3 | Taylor | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - TX (004F) | AUSYTXFC0MD | 558 | — | — |
| 737-201 | 4 | Taylor | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-201 | 5 | Taylor | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-201 | 6 | Taylor | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-201 | 7 | Taylor | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-201 | 8 | Taylor | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-201 | 9 | Taylor | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-201 | A | Taylor | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-202 | 0 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-202 | 1 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-202 | 2 | Austin | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 737-202 | 3 | Austin | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 737-202 | 4 | Austin | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | AUSXTXZR0MD | 558 | — | — |
| 737-202 | 5 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-202 | 6 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-202 | 7 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-202 | 8 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-202 | 9 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-202 | A | Austin | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 737-203 | 0 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-203 | 1 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-203 | 2 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-203 | 3 | Austin | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX (7249) | AUSTIN | 558 | — | — |
| 737-203 | 4 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-203 | 5 | Austin | Landline or VoIP | AT&T CORP. (516C) | AUSTTXGR25Z | 558 | — | — |
| 737-203 | 6 | Austin | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | AUSUTXNIGT3 | 558 | — | — |
| 737-203 | 7 | Austin | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | AUSUTXNIGT3 | 558 | — | — |
| 737-203 | 8 | Austin | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | AUSXTXZR0MD | 558 | — | — |
| 737-203 | 9 | Austin | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | AUSXTXZR0MD | 558 | — | — |
| 737-203 | A | Austin | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX (7249) | AUSTIN | 558 | — | — |
| 737-204 | 0 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-204 | 1 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-204 | 2 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-204 | 3 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-204 | 4 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-204 | 5 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-204 | 6 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-204 | 7 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-204 | 8 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-204 | 9 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-204 | A | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-205 | 0 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-205 | 1 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-205 | 2 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-205 | 3 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-205 | 4 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-205 | 5 | Austin | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | AUSXTXZR0MD | 558 | — | — |
| 737-205 | 6 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-205 | 7 | Austin | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | AUSXTXZR0MD | 558 | — | — |
| 737-205 | 8 | Austin | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | AUSXTXZR0MD | 558 | — | — |
| 737-205 | 9 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-205 | A | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-206 | 0 | Bastrop | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-206 | 1 | Bastrop | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-206 | 2 | Bastrop | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | AUSUTXNIGT3 | 558 | — | — |
| 737-206 | 3 | Bastrop | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | AUSUTXNIGT3 | 558 | — | — |
| 737-206 | 4 | Bastrop | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 737-206 | 5 | Bastrop | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-206 | 6 | Bastrop | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-206 | 7 | Bastrop | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-206 | 8 | Bastrop | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-206 | 9 | Bastrop | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-206 | A | Bastrop | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-207 | 0 | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 737-207 | 1 | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 737-207 | 2 | Austin | Wireless | T-MOBILE USA, INC. (6529) | AUSWTXGXBMD | 558 | — | — |
| 737-207 | 3 | Austin | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - TX (7138) | AUSTIN | 558 | — | — |
| 737-207 | 4 | Austin | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - TX (7138) | AUSTIN | 558 | — | — |
| 737-207 | 5 | Austin | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - TX (7138) | AUSTIN | 558 | — | — |
| 737-207 | 6 | Austin | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - TX (7138) | AUSTIN | 558 | — | — |
| 737-207 | 7 | Austin | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - TX (7138) | AUSTIN | 558 | — | — |
| 737-207 | 8 | Austin | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - TX (7138) | AUSTIN | 558 | — | — |
| 737-207 | 9 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-207 | A | Austin | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - TX (7138) | AUSTIN | 558 | — | — |
| 737-208 | 0 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-208 | 1 | Austin | Landline or VoIP | ONVOY, LLC - TX (903C) | AUSTTXGR03Z | 558 | — | — |
| 737-208 | 2 | Austin | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - TX (6114) | AUSTTXUH5MD | 558 | — | — |
| 737-208 | 3 | Austin | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX (7249) | AUSTIN | 558 | — | — |
| 737-208 | 4 | Austin | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX (7249) | AUSTIN | 558 | — | — |
| 737-208 | 5 | Austin | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX (7249) | AUSTIN | 558 | — | — |
| 737-208 | 6 | Austin | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX (7249) | AUSTIN | 558 | — | — |
| 737-208 | 7 | Austin | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - TX (7138) | AUSTTXGR09Z | 558 | — | — |
| 737-208 | 8 | Austin | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - TX (7138) | AUSTTXGR09Z | 558 | — | — |
| 737-208 | 9 | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 737-208 | A | Austin | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | AUSUTX78AMD | 558 | — | — |
| 737-209 | 0 | Austin | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | AUSXTXZR0MD | 558 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
330
Assignment Blocks
3,445
Rate Centers
35
Carriers of Record
48
| Type | Blocks | Share |
|---|---|---|
| Landline | 9 | 0% |
| Landline or VoIP | 1,922 | 56% |
| Wireless | 1,514 | 44% |
| Carrier | Blocks |
|---|---|
| ONVOY, LLC - TX | 803 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 531 |
| T-MOBILE USA, INC. | 494 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 351 |
| BANDWIDTH.COM CLEC, LLC - TX | 229 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 166 |
| ONVOY SPECTRUM, LLC | 115 |
| PEERLESS NETWORK OF TEXAS, LLC - TX | 84 |
| LEVEL 3 COMMUNICATIONS, LLC - TX | 73 |
| FRACTEL, LLC | 57 |
| 38 other carriers | 542 |
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 | 153 | 1,683 |
| Georgetown | 20 | 211 |
| Bastrop | 19 | 194 |
| San Marcos | 13 | 138 |
| Kyle | 10 | 106 |
| Leander | 10 | 106 |
| Elgin | 9 | 88 |
| Taylor | 8 | 85 |
| Buda | 7 | 68 |
| Lampasas | 6 | 61 |
| Lockhart | 6 | 60 |
| Burnet | 5 | 52 |
| Dripping Springs | 5 | 46 |
| Rockdale | 5 | 45 |
| Wimberley | 5 | 50 |
| Bertram | 4 | 40 |
| Hutto | 4 | 41 |
| Smithville | 4 | 37 |
| Granger | 3 | 28 |
| Jarrell | 3 | 24 |
| Liberty Hill | 3 | 25 |
| Martindale | 3 | 24 |
| San Gabriel | 3 | 21 |
| Adamsville | 2 | 16 |
| Briggs | 2 | 19 |
| Coupland | 2 | 17 |
| Dale/Lytton Springs | 2 | 15 |
| Fentress | 2 | 22 |
| Kempner | 2 | 20 |
| Lometa | 2 | 21 |
| McDade | 2 | 20 |
| Milano | 2 | 20 |
| Thorndale-Thrall | 2 | 21 |
| Buchanan Dam | 1 | 10 |
| Paige | 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 737 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. 737 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 737 covers 35 cities and communities in Texas, including Adamsville, Austin, Bastrop, Bertram, Briggs, and 30 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 737 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 737 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 + 737 + 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 1 737 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 737 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +17375550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.