Area code 510
5,893 number blocks indexed across 43 carriers.
States: CA (5,893)
Carriers
| OCN | Company | HQ | Type | Blocks | Recent | Website |
|---|---|---|---|---|---|---|
| 6010 | New Cingular Wireless PCS LLC | Kirkland, WA | Wireless Carrier | 411 | 19 | att.com |
| 6006 | Cellco Partnership dba Verizon Wireless - CA | Olathe, KS | Wireless Carrier | 466 | 11 | verizonwireless.com |
| 385L | Sequoia Wireless LLC | Hayward, CA | Competitive Local Exchange Carrier | 5 | 5 | |
| 649C | Onvoy LLC - CA | Chicago, IL | Competitive Local Exchange Carrier | 604 | 4 | sinch.com |
| 624H | Onvoy Spectrum LLC | Broomfield, CO | Wireless Carrier | 71 | 3 | |
| 9740 | Pacific Bell Telephone Company | Dallas, TX | Regional Bell Operating Company | 1,153 | — | att.com |
| 6529 | T-Mobile USA Inc | Bellevue, WA | Personal Communications Service (Wireless) | 707 | — | t-mobile.com |
| 5562 | T-Mobile USA Inc | Dallas, TX | Personal Communications Service (Wireless) | 630 | — | metropcs.com |
| 981E | Bandwidth.com CLEC LLC - CA | Cary, NC | Competitive Local Exchange Carrier | 454 | — | bandwidth.com |
| 8826 | Level 3 Communications LLC - CA | Westminster, CO | Competitive Local Exchange Carrier | 290 | — | centurylink.com |
| 7229 | MCImetro Access Transmission Services LLC | Vienna, VA | Competitive Local Exchange Carrier | 224 | — | verizon.com |
| 671J | U.S. Telepacific Corporation dba TPx Communications | Las Vegas, NV | IP-Enabled Service / VoIP | 145 | — | tpx.com |
| 318J | Comcast IP Phone LLC | Philadelphia, PA | IP-Enabled Service / VoIP | 144 | — | comcast.com |
| 7145 | Teleport Communications America LLC - CA | Staten Island, NY | Competitive Local Exchange Carrier | 108 | — | att.com |
| 373F | Peerless Network of California LLC - CA | Chicago, IL | Competitive Local Exchange Carrier | 95 | — | peerlessnetwork.com |
| 9262 | Utility Telecom Group LLC - CA | Stockton, CA | Competitive Local Exchange Carrier | 52 | — | utilitytelephone.com |
| 7240 | MCImetro Access Transmission Services LLC - CA | Vienna, VA | Competitive Local Exchange Carrier | 49 | — | verizon.com |
| 433E | Sonic Telecom LLC - CA | Santa Rosa, CA | Competitive Local Exchange Carrier | 39 | — | sonic.net |
| 516C | AT&T Enterprises LLC | San Antonio, TX | IP-Enabled Service / VoIP | 31 | — | att.com |
| 4129 | O1 Communications Inc - CA | Sacramento, CA | Competitive Local Exchange Carrier | 27 | — | tpx.com |
| 7718 | Level 3 Telecom of California LP - CA | Littleton, CO | Competitive Local Exchange Carrier | 27 | — | centurylink.com |
| 829J | PAETEC iTel LLC | Charlotte, NC | IP-Enabled Service / VoIP | 21 | — | |
| 073H | Telnyx LLC | Chicago, IL | IP-Enabled Service / VoIP | 20 | — | telnyx.com |
| 197D | Vonage America LLC | Holmdel, NJ | IP-Enabled Service / VoIP | 16 | — | vonage.com |
| 508J | CenturyLink Communications LLC | Littleton, CO | IP-Enabled Service / VoIP | 14 | — | centurylink.com |
| MULT | Multiple OCN Listing | Administrative / Reserved | 13 | — | ||
| 222H | Local Access Services LLC - CA | Windermere, FL | Competitive Local Exchange Carrier | 12 | — | |
| 6630 | Spok Inc | Plano, TX | Wireless Carrier | 11 | — | spok.com |
| 939H | Commio LLC | Austin, TX | IP-Enabled Service / VoIP | 11 | — | commio.com |
| 707H | Integrated Path Communications LLC - CA | Hillsdale, NY | Competitive Local Exchange Carrier | 10 | — | ipc-llc.com |
| 7421 | AT&T Local | Bedminster, NJ | Competitive Local Exchange Carrier | 6 | — | att.com |
| 321J | HD Carrier LLC | Henderson, NV | IP-Enabled Service / VoIP | 4 | — | hdcarrier.com |
| 515J | IP Horizon LLC | Orlando, FL | IP-Enabled Service / VoIP | 4 | — | |
| 553J | Whitesky Communications LLC | Northport, AL | IP-Enabled Service / VoIP | 4 | — | whitesky.us |
| 6967 | 33 Wireless Inc | Carson, CA | Wireless Carrier | 3 | — | wildgate.com |
| 9748 | American Messaging Services LLC | Lewisville, TX | Wireless Carrier | 3 | — | americanmessaging.net |
| 7894 | North County Communications Corporation - CA | San Diego, CA | Competitive Local Exchange Carrier | 2 | — | nccom.com |
| 965H | Fractel LLC | Indialantic, FL | IP-Enabled Service / VoIP | 2 | — | fractel.net |
| 0051 | Shelcomm | Baldwin Park, CA | Wireless Carrier | 1 | — | |
| 485E | Astound Broadband LLC - CA | Kirkland, WA | Competitive Local Exchange Carrier | 1 | — | astound.com |
| 6906 | American Messaging Services LLC | Lewisville, TX | Wireless Carrier | 1 | — | |
| 7174 | Electric Lightwave LLC dba Allstream | Portland, OR | Competitive Local Exchange Carrier | 1 | — | allstream.com |
| 996H | Airespring Inc | Van Nuys, CA | IP-Enabled Service / VoIP | 1 | — | airespring.com |