Area code 251
4,237 number blocks indexed across 53 carriers.
States: AL (4,237)
Carriers
| OCN | Company | HQ | Type | Blocks | Recent | Website |
|---|---|---|---|---|---|---|
| 6214 | New Cingular Wireless PCS LLC - GA | Atlanta, GA | Wireless Carrier | 790 | 190 | att.com |
| 321J | HD Carrier LLC | Henderson, NV | IP-Enabled Service / VoIP | 15 | 15 | hdcarrier.com |
| 6804 | Cellco Partnership dba Verizon Wireless - AL | Olathe, KS | Wireless Carrier | 310 | 14 | verizonwireless.com |
| 604E | Onvoy LLC - AL | Chicago, IL | Competitive Local Exchange Carrier | 865 | 4 | sinch.com |
| 624H | Onvoy Spectrum LLC | Broomfield, CO | Wireless Carrier | 213 | 3 | |
| 8271 | Teleport Communications America LLC - AL | Staten Island, NY | Competitive Local Exchange Carrier | 35 | 3 | att.com |
| 318J | Comcast IP Phone LLC | Philadelphia, PA | IP-Enabled Service / VoIP | 43 | 2 | comcast.com |
| 478J | NUSO LLC | Atlanta, GA | IP-Enabled Service / VoIP | 8 | 2 | brightlink.com |
| 490J | Boost SubscriberCo LLC | Washington, DC | Wireless Carrier | 8 | 2 | dish.com |
| 114J | Exiant Communications LLC | Eldersburg, MD | IP-Enabled Service / VoIP | 2 | 2 | exiantcom.com |
| 145J | Terra Nova Telecom Inc | Lakewood Ranch, FL | IP-Enabled Service / VoIP | 2 | 2 | terranova.net |
| 700J | Wavenation LLC | Chicago, IL | IP-Enabled Service / VoIP | 2 | 2 | peerlessnetwork.com |
| 773F | MCC Telephony of the South LLC - AL | Middletown, NY | Competitive Local Exchange Carrier | 67 | 1 | mediacomcc.com |
| 7229 | MCImetro Access Transmission Services LLC | Vienna, VA | Competitive Local Exchange Carrier | 8 | 1 | verizon.com |
| 045L | BHN IP Enabled Services LLC | Saint Louis, MO | IP-Enabled Service / VoIP | 4 | 1 | |
| 476H | Airus Inc - AL | Chicago, IL | Competitive Local Exchange Carrier | 3 | 1 | airustel.com |
| 593K | MCC Telephony LLC | Mediacom Park, NY | IP-Enabled Service / VoIP | 1 | 1 | |
| 9419 | Bellsouth Telecommunications Inc dba South Central Bell Telephone | Atlanta, GA | Regional Bell Operating Company | 391 | — | att.com |
| 6916 | Eliska Wireless Ventures Subsidiary I LLC | Bellevue, WA | Personal Communications Service (Wireless) | 300 | — | t-mobile.com |
| 072F | Bandwidth.com CLEC LLC - AL | Cary, NC | Competitive Local Exchange Carrier | 195 | — | bandwidth.com |
| 5562 | T-Mobile USA Inc | Dallas, TX | Personal Communications Service (Wireless) | 168 | — | metropcs.com |
| 5255 | Level 3 Communications LLC - AL | Broomfield, CO | Competitive Local Exchange Carrier | 137 | — | centurylink.com |
| 829J | PAETEC iTel LLC | Charlotte, NC | IP-Enabled Service / VoIP | 105 | — | |
| 0298 | Brightspeed of Southern Alabama | Monroe, LA | Incumbent Local Exchange Carrier | 92 | — | centurylink.com |
| 939H | Commio LLC | Austin, TX | IP-Enabled Service / VoIP | 60 | — | commio.com |
| 947G | Telepak Networks Inc - AL | Ridgeland, MS | Competitive Local Exchange Carrier | 55 | — | telepak.net |
| 073H | Telnyx LLC | Chicago, IL | IP-Enabled Service / VoIP | 42 | — | telnyx.com |
| 0306 | Frontier Communications of the South LLC - AL | Rochester, NY | Incumbent Local Exchange Carrier | 39 | — | frontier.com |
| 9789 | Brightspeed of Alabama LLC - Northern | Monroe, LA | Incumbent Local Exchange Carrier | 38 | — | centurylink.com |
| 965H | Fractel LLC | Indialantic, FL | IP-Enabled Service / VoIP | 30 | — | fractel.net |
| 516C | AT&T Enterprises LLC | San Antonio, TX | IP-Enabled Service / VoIP | 28 | — | att.com |
| 6744 | Southern Communications Services Inc | Birmingham, AL | Wireless Carrier | 27 | — | |
| 4464 | Frontier Communications of the South LLC - AL | Rochester, NY | Incumbent Local Exchange Carrier | 20 | — | frontier.com |
| 508J | CenturyLink Communications LLC | Littleton, CO | IP-Enabled Service / VoIP | 20 | — | centurylink.com |
| 6581 | Cellular South Inc | Jackson, MS | Wireless Carrier | 15 | — | cspire.com |
| 7327 | Level 3 Telecom of Alabama LLC - AL | Columbia, MD | Competitive Local Exchange Carrier | 15 | — | centurylink.com |
| MULT | Multiple OCN Listing | Administrative / Reserved | 14 | — | ||
| 7221 | MCImetro Access Transmission Services LLC - AL | Vienna, VA | Competitive Local Exchange Carrier | 12 | — | verizon.com |
| 0284 | Butler Telephone Company Inc | Madison, WI | Incumbent Local Exchange Carrier | 11 | — | tdstelecom.com |
| 0304 | Millry Telephone Company | Millry, AL | Incumbent Local Exchange Carrier | 7 | — | millry.net |
| 7421 | AT&T Local | Bedminster, NJ | Competitive Local Exchange Carrier | 7 | — | att.com |
| 6630 | Spok Inc | Plano, TX | Wireless Carrier | 6 | — | spok.com |
| 807C | Intrado Communications LLC | Bedminster, NJ | Competitive Local Exchange Carrier | 5 | — | |
| 732J | NUSO LLC | University City, MO | IP-Enabled Service / VoIP | 4 | — | brightlink.com |
| 197D | Vonage America LLC | Holmdel, NJ | IP-Enabled Service / VoIP | 3 | — | vonage.com |
| 551G | NUSO LLC | Atlanta, GA | Wireless Carrier | 3 | — | 365wireless.net |
| 156J | RCLEC Inc | Centennial, CO | IP-Enabled Service / VoIP | 2 | — | rclec.com |
| 425J | CSC Wireless LLC | Long Island City, NY | Wireless Carrier | 2 | — | alticeusa.com |
| 506J | Twilio International Inc | San Francisco, CA | IP-Enabled Service / VoIP | 2 | — | twilio.com |
| 9417 | Bellsouth Telecommunications Inc dba Southern Bell Telephone & Telegraph | Atlanta, GA | Regional Bell Operating Company | 2 | — | att.com |
| 9736 | Pine Belt Broadcasting LLC dba Pine Belt Telephone Competitive Services - AL | Arlington, AL | Competitive Local Exchange Carrier | 2 | — | pinebelt.net |
| 0285 | Castleberry Telephone Company Inc | Castleberry, AL | Incumbent Local Exchange Carrier | 1 | — | cbtelco.com |
| 515J | IP Horizon LLC | Orlando, FL | IP-Enabled Service / VoIP | 1 | — |