Area code 512
6,030 number blocks indexed across 42 carriers.
States: TX (6,030)
Carriers
| OCN | Company | HQ | Type | Blocks | Recent | Website |
|---|---|---|---|---|---|---|
| 6534 | New Cingular Wireless PCS LLC - IL | Atlanta, GA | Wireless Carrier | 788 | 10 | att.com |
| 6529 | T-Mobile USA Inc | Bellevue, WA | Personal Communications Service (Wireless) | 644 | 6 | t-mobile.com |
| 903C | Onvoy LLC - TX | Chicago, IL | Competitive Local Exchange Carrier | 411 | 6 | sinch.com |
| 6506 | Cellco Partnership dba Verizon Wireless - TX | Olathe, KS | Wireless Carrier | 393 | 3 | verizonwireless.com |
| 9533 | Southwestern Bell Telephone Company | Dallas, TX | Regional Bell Operating Company | 1,200 | — | att.com |
| 004F | Bandwidth.com CLEC LLC - TX | Cary, NC | Competitive Local Exchange Carrier | 410 | — | bandwidth.com |
| 5562 | T-Mobile USA Inc | Dallas, TX | Personal Communications Service (Wireless) | 358 | — | metropcs.com |
| 7516 | Level 3 of Telecom of Texas LLC - TX | Littleton, CO | Competitive Local Exchange Carrier | 290 | — | twcable.com |
| 6114 | Level 3 Communications LLC - TX | Westminster, CO | Competitive Local Exchange Carrier | 265 | — | centurylink.com |
| 7249 | MCImetro Access Transmission Services LLC - TX | Vienna, VA | Competitive Local Exchange Carrier | 224 | — | verizon.com |
| 793K | TWC IP Enabled Services LLC | Saint Louis, MO | IP-Enabled Service / VoIP | 179 | — | |
| 4344 | Frontier Southwest Incorporated dba Frontier Communications of Texas | Irving, TX | Regional Bell Operating Company | 125 | — | frontier.com |
| 7138 | Teleport Communications America LLC - TX | Staten Island, NY | Competitive Local Exchange Carrier | 97 | — | att.com |
| 7670 | Grande Communications Networks Inc - TX | San Marcos, TX | Competitive Local Exchange Carrier | 84 | — | grandecom.com |
| 177F | Peerless Network of Texas LLC - TX | Chicago, IL | Competitive Local Exchange Carrier | 77 | — | peerlessnetwork.com |
| 2154 | Frontier Southwest Incorporated dba Frontier Communications of Texas | Irving, TX | Regional Bell Operating Company | 59 | — | frontier.com |
| 2140 | Brightspeed of Southern Texas Inc | Monroe, LA | Incumbent Local Exchange Carrier | 53 | — | centurylink.com |
| 516C | AT&T Enterprises LLC | San Antonio, TX | IP-Enabled Service / VoIP | 40 | — | att.com |
| 624H | Onvoy Spectrum LLC | Broomfield, CO | Wireless Carrier | 39 | — | |
| 139F | Evolve Cellular Inc | Austin, TX | Wireless Carrier | 36 | — | worldcall.net |
| 508J | CenturyLink Communications LLC | Littleton, CO | IP-Enabled Service / VoIP | 33 | — | centurylink.com |
| 318C | Cebridge Telecom TX LP - TX | Atlanta, GA | Competitive Local Exchange Carrier | 32 | — | altice.com |
| 829J | PAETEC iTel LLC | Charlotte, NC | IP-Enabled Service / VoIP | 32 | — | |
| 2114 | Brightspeed of Texas Inc | Overland Park, KS | Incumbent Local Exchange Carrier | 31 | — | centurylink.com |
| 671J | U.S. Telepacific Corporation dba TPx Communications | Las Vegas, NV | IP-Enabled Service / VoIP | 22 | — | tpx.com |
| 073H | Telnyx LLC | Chicago, IL | IP-Enabled Service / VoIP | 20 | — | telnyx.com |
| 6630 | Spok Inc | Plano, TX | Wireless Carrier | 16 | — | spok.com |
| MULT | Multiple OCN Listing | Administrative / Reserved | 14 | — | ||
| 473F | USFon Inc - TX | West Lake Hills, TX | Competitive Local Exchange Carrier | 11 | — | usfon.org |
| 7551 | Austin Bestline Company | Austin, TX | Competitive Local Exchange Carrier | 11 | — | bestline.net |
| 158H | Invoxio Incorporated | Fort Myers, FL | IP-Enabled Service / VoIP | 10 | — | |
| 425J | CSC Wireless LLC | Long Island City, NY | Wireless Carrier | 4 | — | alticeusa.com |
| 319D | Foremost Telecommunications Corporation - TX | Dallas, TX | Competitive Local Exchange Carrier | 3 | — | foremosttelecom.com |
| 8958 | XO Texas Inc | Reston, VA | Competitive Local Exchange Carrier | 3 | — | verizon.com |
| 9748 | American Messaging Services LLC | Lewisville, TX | Wireless Carrier | 3 | — | americanmessaging.net |
| 515J | IP Horizon LLC | Orlando, FL | IP-Enabled Service / VoIP | 2 | — | |
| 551G | NUSO LLC | Atlanta, GA | Wireless Carrier | 2 | — | 365wireless.net |
| 616J | Leap Telecom LLC | Denver, CO | IP-Enabled Service / VoIP | 2 | — | leap.tel |
| 7399 | Westel Inc - TX | Austin, TX | Competitive Local Exchange Carrier | 2 | — | westelsystems.com |
| 7421 | AT&T Local | Bedminster, NJ | Competitive Local Exchange Carrier | 2 | — | att.com |
| 7715 | Matrix Telecom LLC SII TNCI - TX | San Antonio, TX | Competitive Local Exchange Carrier | 2 | — | lingo.com |
| 156J | RCLEC Inc | Centennial, CO | IP-Enabled Service / VoIP | 1 | — | rclec.com |