Area code 815
5,521 number blocks indexed across 66 carriers.
States: IL (5,521)
Carriers
| OCN | Company | HQ | Type | Blocks | Recent | Website |
|---|---|---|---|---|---|---|
| 6534 | New Cingular Wireless PCS LLC - IL | Atlanta, GA | Wireless Carrier | 289 | 17 | att.com |
| 6265 | United States Cellular - IL | Chicago, IL | Wireless Carrier | 250 | 15 | uscellular.com |
| 145J | Terra Nova Telecom Inc | Lakewood Ranch, FL | IP-Enabled Service / VoIP | 14 | 13 | terranova.net |
| 6333 | Cellco Partnership dba Verizon Wireless - IL | Olathe, KS | Wireless Carrier | 314 | 10 | verizonwireless.com |
| 224C | Onvoy LLC | Chicago, IL | Competitive Local Exchange Carrier | 589 | 7 | sinch.com |
| 063E | Peerless Network of Illinois LLC - IL | Chicago, IL | Competitive Local Exchange Carrier | 81 | 3 | peerlessnetwork.com |
| 6529 | T-Mobile USA Inc | Bellevue, WA | Personal Communications Service (Wireless) | 504 | 1 | t-mobile.com |
| 321J | HD Carrier LLC | Henderson, NV | IP-Enabled Service / VoIP | 1 | 1 | hdcarrier.com |
| 9329 | Ameritech Illinois | Hoffman Estates, IL | Regional Bell Operating Company | 540 | — | att.com |
| 6115 | Level 3 Communications LLC - IL | Westminster, CO | Competitive Local Exchange Carrier | 402 | — | centurylink.com |
| 1015 | Frontier North Inc - IL | Rochester, NY | Incumbent Local Exchange Carrier | 350 | — | frontier.com |
| 5562 | T-Mobile USA Inc | Dallas, TX | Personal Communications Service (Wireless) | 245 | — | metropcs.com |
| 1036 | Frontier North Inc - IL | Rochester, NY | Incumbent Local Exchange Carrier | 228 | — | frontier.com |
| 984E | Bandwidth.com CLEC LLC - IL | Cary, NC | Competitive Local Exchange Carrier | 198 | — | bandwidth.com |
| 318J | Comcast IP Phone LLC | Philadelphia, PA | IP-Enabled Service / VoIP | 158 | — | comcast.com |
| 508J | CenturyLink Communications LLC | Littleton, CO | IP-Enabled Service / VoIP | 154 | — | centurylink.com |
| 460K | First Communications LLC | Oakbrook Terrace, IL | IP-Enabled Service / VoIP | 117 | — | |
| 7136 | Teleport Communications America LLC - IL | Staten Island, NY | Competitive Local Exchange Carrier | 115 | — | att.com |
| 829J | PAETEC iTel LLC | Charlotte, NC | IP-Enabled Service / VoIP | 105 | — | |
| 073H | Telnyx LLC | Chicago, IL | IP-Enabled Service / VoIP | 87 | — | telnyx.com |
| 846F | Mediacom Telephony of Illinois LLC - IL | Middletown, NY | Competitive Local Exchange Carrier | 84 | — | mediacomcc.com |
| 7196 | MCImetro Access Transmission Services LLC - IL | Vienna, VA | Competitive Local Exchange Carrier | 76 | — | verizon.com |
| 624H | Onvoy Spectrum LLC | Broomfield, CO | Wireless Carrier | 75 | — | |
| 495J | Stratus Networks Inc | Peoria Heights, IL | IP-Enabled Service / VoIP | 72 | — | stratusnet.com |
| 1183 | Citizens Telecommunications Company of Illinois dba Frontier Citizens Communications of Illinois | Rochester, NY | Incumbent Local Exchange Carrier | 60 | — | frontier.com |
| 443F | Aero North Communications Inc - IL | Freeport, IL | Competitive Local Exchange Carrier | 55 | — | aeroinc.net |
| 516C | AT&T Enterprises LLC | San Antonio, TX | IP-Enabled Service / VoIP | 40 | — | att.com |
| 5447 | Access One Inc - IL | Chicago, IL | Competitive Local Exchange Carrier | 40 | — | accessoneinc.com |
| 1057 | Brightspeed of Illinois LLC | Monroe, LA | Incumbent Local Exchange Carrier | 35 | — | centurylink.com |
| 8702 | RCN Telecom Services of Illinios Inc - IL | Chicago, IL | Competitive Local Exchange Carrier | 32 | — | astound.com |
| 593K | MCC Telephony LLC | Mediacom Park, NY | IP-Enabled Service / VoIP | 26 | — | |
| 1073 | Frontier Communications - Prairie Inc | Rochester, NY | Incumbent Local Exchange Carrier | 17 | — | frontier.com |
| 792K | Charter IP Enabled Services LLC | Saint Louis, MO | IP-Enabled Service / VoIP | 17 | — | |
| 1000 | Frontier Communications of the Carolinas Inc - IL | Rochester, NY | Incumbent Local Exchange Carrier | 15 | — | frontier.com |
| 1050 | The Marseilles Telephone Company of Marseilles Illinois | Metamora, IL | Incumbent Local Exchange Carrier | 15 | — | mtco.com |
| MULT | Multiple OCN Listing | Administrative / Reserved | 14 | — | ||
| 259E | YMax Communications Corporation - IL | Palm Beach, FL | Competitive Local Exchange Carrier | 10 | — | ymaxcorp.com |
| 1038 | Frontier Communications of Illinois Inc | Rochester, NY | Incumbent Local Exchange Carrier | 9 | — | frontier.com |
| 6630 | Spok Inc | Plano, TX | Wireless Carrier | 9 | — | spok.com |
| 7421 | AT&T Local | Bedminster, NJ | Competitive Local Exchange Carrier | 9 | — | att.com |
| 939H | Commio LLC | Austin, TX | IP-Enabled Service / VoIP | 9 | — | commio.com |
| 0998 | Frontier Communications of Depue Inc | Rochester, NY | Incumbent Local Exchange Carrier | 7 | — | frontier.com |
| 7229 | MCImetro Access Transmission Services LLC | Vienna, VA | Competitive Local Exchange Carrier | 7 | — | verizon.com |
| 972C | Digital Network Access Communications Inc - IL | Rochelle, IL | Competitive Local Exchange Carrier | 7 | — | dna-communications.com |
| 9748 | American Messaging Services LLC | Lewisville, TX | Wireless Carrier | 5 | — | americanmessaging.net |
| 057H | Local Access LLC - IL | Windermere, FL | Competitive Local Exchange Carrier | 4 | — | |
| 965H | Fractel LLC | Indialantic, FL | IP-Enabled Service / VoIP | 4 | — | fractel.net |
| 490J | Boost SubscriberCo LLC | Washington, DC | Wireless Carrier | 3 | — | dish.com |
| 1009 | C-R Telephone Company | Dodge City, KS | Incumbent Local Exchange Carrier | 2 | — | consolidated.com |
| 114J | Exiant Communications LLC | Eldersburg, MD | IP-Enabled Service / VoIP | 2 | — | exiantcom.com |
| 197D | Vonage America LLC | Holmdel, NJ | IP-Enabled Service / VoIP | 2 | — | vonage.com |
| 515J | IP Horizon LLC | Orlando, FL | IP-Enabled Service / VoIP | 2 | — | |
| 551G | NUSO LLC | Atlanta, GA | Wireless Carrier | 2 | — | 365wireless.net |
| 597F | VOIP Innovations LLC | Pittsburgh, PA | IP-Enabled Service / VoIP | 2 | — | voipstreet.com |
| 0848 | Bergen Telephone Company - WI | Sharon, WI | Incumbent Local Exchange Carrier | 1 | — | solarus.net |
| 0946 | Sharon Telephone Company - WI | Sharon, WI | Incumbent Local Exchange Carrier | 1 | — | sharontc.net |
| 1041 | Kinsman Mutual Telephone Company | Kinsman, IL | Incumbent Local Exchange Carrier | 1 | — | mtco.com |
| 1045 | Leaf River Telephone Company | Leaf River, IL | Incumbent Local Exchange Carrier | 1 | — | lrnet1.com |
| 1046 | Leonore Mutual Telephone Company | Leonore, IL | Incumbent Local Exchange Carrier | 1 | — | lmtc.net |
| 1048 | McNabb Telephone Company | McNabb, IL | Incumbent Local Exchange Carrier | 1 | — | nabbnet.com |
| 1086 | Tonica Telephone Company | Tonica, IL | Incumbent Local Exchange Carrier | 1 | — | tonicacom.net |
| 1092 | Stelle Telephone Company | Cabery, IL | Incumbent Local Exchange Carrier | 1 | — | stelle.net |
| 4837 | MTCO Communications Inc | Metamora, IL | Competitive Local Exchange Carrier | 1 | — | mdtc.net |
| 520K | TDS Metrocom LLC | Madison, WI | IP-Enabled Service / VoIP | 1 | — | |
| 6795 | Indiana Paging Network Inc | Michigan City, IN | Wireless Carrier | 1 | — | indianapaging.com |
| 7894 | North County Communications Corporation - CA | San Diego, CA | Competitive Local Exchange Carrier | 1 | — | nccom.com |