Area code 858
4,555 number blocks indexed across 45 carriers.
States: CA (4,555)
Carriers
| OCN | Company | HQ | Type | Blocks | Recent | Website |
|---|---|---|---|---|---|---|
| 6010 | New Cingular Wireless PCS LLC | Kirkland, WA | Wireless Carrier | 486 | 48 | att.com |
| 649C | Onvoy LLC - CA | Chicago, IL | Competitive Local Exchange Carrier | 578 | 39 | sinch.com |
| 6006 | Cellco Partnership dba Verizon Wireless - CA | Olathe, KS | Wireless Carrier | 385 | 32 | verizonwireless.com |
| 6529 | T-Mobile USA Inc | Bellevue, WA | Personal Communications Service (Wireless) | 533 | 15 | t-mobile.com |
| 624H | Onvoy Spectrum LLC | Broomfield, CO | Wireless Carrier | 82 | 12 | |
| 7147 | Teleport Communications America LLC - CA | Staten Island, NY | Competitive Local Exchange Carrier | 219 | 10 | att.com |
| 145J | Terra Nova Telecom Inc | Lakewood Ranch, FL | IP-Enabled Service / VoIP | 6 | 5 | terranova.net |
| 732J | NUSO LLC | University City, MO | IP-Enabled Service / VoIP | 7 | 3 | brightlink.com |
| 490J | Boost SubscriberCo LLC | Washington, DC | Wireless Carrier | 4 | 2 | dish.com |
| 478J | NUSO LLC | Atlanta, GA | IP-Enabled Service / VoIP | 2 | 2 | brightlink.com |
| 829J | PAETEC iTel LLC | Charlotte, NC | IP-Enabled Service / VoIP | 116 | 1 | |
| 073H | Telnyx LLC | Chicago, IL | IP-Enabled Service / VoIP | 44 | 1 | telnyx.com |
| 114J | Exiant Communications LLC | Eldersburg, MD | IP-Enabled Service / VoIP | 3 | 1 | exiantcom.com |
| 700J | Wavenation LLC | Chicago, IL | IP-Enabled Service / VoIP | 2 | 1 | peerlessnetwork.com |
| 9740 | Pacific Bell Telephone Company | Dallas, TX | Regional Bell Operating Company | 561 | — | att.com |
| 981E | Bandwidth.com CLEC LLC - CA | Cary, NC | Competitive Local Exchange Carrier | 234 | — | bandwidth.com |
| 7240 | MCImetro Access Transmission Services LLC - CA | Vienna, VA | Competitive Local Exchange Carrier | 226 | — | verizon.com |
| 8826 | Level 3 Communications LLC - CA | Westminster, CO | Competitive Local Exchange Carrier | 200 | — | centurylink.com |
| 671J | U.S. Telepacific Corporation dba TPx Communications | Las Vegas, NV | IP-Enabled Service / VoIP | 136 | — | tpx.com |
| 318J | Comcast IP Phone LLC | Philadelphia, PA | IP-Enabled Service / VoIP | 116 | — | comcast.com |
| 7718 | Level 3 Telecom of California LP - CA | Littleton, CO | Competitive Local Exchange Carrier | 107 | — | centurylink.com |
| 373F | Peerless Network of California LLC - CA | Chicago, IL | Competitive Local Exchange Carrier | 70 | — | peerlessnetwork.com |
| 965H | Fractel LLC | Indialantic, FL | IP-Enabled Service / VoIP | 70 | — | fractel.net |
| 576C | Time Warner Cable Information Services (California) LLC dba Time Warner Cable - CA | Stamford, CT | Competitive Local Exchange Carrier | 69 | — | level3.com |
| 939H | Commio LLC | Austin, TX | IP-Enabled Service / VoIP | 58 | — | commio.com |
| 5562 | T-Mobile USA Inc | Dallas, TX | Personal Communications Service (Wireless) | 42 | — | metropcs.com |
| 9262 | Utility Telecom Group LLC - CA | Stockton, CA | Competitive Local Exchange Carrier | 27 | — | utilitytelephone.com |
| 4129 | O1 Communications Inc - CA | Sacramento, CA | Competitive Local Exchange Carrier | 24 | — | tpx.com |
| 516C | AT&T Enterprises LLC | San Antonio, TX | IP-Enabled Service / VoIP | 24 | — | att.com |
| 197D | Vonage America LLC | Holmdel, NJ | IP-Enabled Service / VoIP | 20 | — | vonage.com |
| 7421 | AT&T Local | Bedminster, NJ | Competitive Local Exchange Carrier | 17 | — | att.com |
| 321J | HD Carrier LLC | Henderson, NV | IP-Enabled Service / VoIP | 15 | — | hdcarrier.com |
| 516J | Ton80 Communications LLC | Anderson, SC | IP-Enabled Service / VoIP | 15 | — | coretel.net |
| MULT | Multiple OCN Listing | Administrative / Reserved | 14 | — | ||
| 508J | CenturyLink Communications LLC | Littleton, CO | IP-Enabled Service / VoIP | 13 | — | centurylink.com |
| 7379 | Matrix Telecom LLC SII TNCI - CA | Stockton, CA | Competitive Local Exchange Carrier | 9 | — | pacwest.com |
| 7894 | North County Communications Corporation - CA | San Diego, CA | Competitive Local Exchange Carrier | 6 | — | nccom.com |
| 9748 | American Messaging Services LLC | Lewisville, TX | Wireless Carrier | 3 | — | americanmessaging.net |
| 252F | Wide Voice LLC - CA | Las Vegas, NV | Competitive Local Exchange Carrier | 2 | — | widevoice.com |
| 506J | Twilio International Inc | San Francisco, CA | IP-Enabled Service / VoIP | 2 | — | twilio.com |
| 598J | Five9 InC | San Ramon, CA | IP-Enabled Service / VoIP | 2 | — | five9.com |
| 6630 | Spok Inc | Plano, TX | Wireless Carrier | 2 | — | spok.com |
| 7229 | MCImetro Access Transmission Services LLC | Vienna, VA | Competitive Local Exchange Carrier | 2 | — | verizon.com |
| 222H | Local Access Services LLC - CA | Windermere, FL | Competitive Local Exchange Carrier | 1 | — | |
| 6906 | American Messaging Services LLC | Lewisville, TX | Wireless Carrier | 1 | — |