North American Telephone Operator
North American
Telephone Operator

Telephone Area 815. Page 4.

Phone numbers of the state Illinois
Prefix: +1815
This prefix is distributed within the state Illinois
The largest city in the region is Rockford
Time Zone: Central
Winter time: UTC-6
Summer time: UTC-5
Below on the map, there is indicated the largest city in the telephone area +1-815-...-.... Illinois Rockford.

In the United States, telephone numbers are divided into a country code (+1), an area code (or prefix), which is three digits long, and a subscriber number (seven digits). These are just a few examples, and there are over 300 area codes in the United States. Each code can cover both large cities and less populated areas depending on population density and telephone network distribution.

The table below shows the main major cities and telecom operators.

If you notice any errors of any community’s location on the map, please report it via the feedback form.

Phone numbers +1-815-YYY-YYYY

Other pages: 1234678910
Company District Major City Prefix
Teleport Communications Group - ChicagoWillLockport, IL+1-815524-SSSS
Tds Metrocom Inc.-ilWinnebagoBeloit, IL+1-815525-SSSS
Teleport Communications Group - ChicagoMchenryCrystal Lake, IL+1-815526-SSSS
Teleport Communications Group - ChicagoMchenryWoodstock, IL+1-815527-SSSS
Teleport Communications Group - ChicagoMchenryMchenry, IL+1-815528-SSSS
Cellco Partnership DBA Verizon WirelessMchenryWoodstock, IL+1-815529-SSSS
Nextel CommunicationsWillJoliet, IL+1-815530-SSSS
Teleport Communications Group - ChicagoWillJoliet, IL+1-815531-SSSS
Usa Mobility WirelessGrundyMorris, IL+1-815532-SSSS
Indiana Paging NtwkCookLa Grange Park, IL+1-815533-SSSS
Level 3 CommunicationsWillFrankfort, IL+1-815534-SSSS
Ameritech IllinoisWhitesideSterling, IL+1-815535-SSSS
Usa Mobility WirelessCookLa Grange Park, IL+1-815536-SSSS
Citizens Telecom Co Illinois-frontier Citizens -ilWhitesideProphetstown, IL+1-815537-SSSS
Frontier NorthLa SalleMendota, IL+1-815538-SSSS
Frontier NorthLa SalleMendota, IL+1-815539-SSSS
Sprint Spectrum L.p.WinnebagoRockford, IL+1-815540-SSSS
United States Cellular Corp. - IllinoisStephensonFreeport, IL+1-815541-SSSS
Citizens Telecom Co Illinois-frontier Citizens -ilWhitesideTampico, IL+1-815542-SSSS
United States Cellular Corp. - IllinoisWinnebagoRockford, IL+1-815543-SSSS
Frontier NorthBooneBelvidere, IL+1-815544-SSSS
New Cingular Wireless PCSWillJoliet, IL+1-815545-SSSS
New Cingular Wireless PCSWillJoliet, IL+1-815546-SSSS
Frontier NorthBooneBelvidere, IL+1-815547-SSSS
Ameritech IllinoisWhitesideSterling, IL+1-815548-SSSS
Sprint Spectrum L.p.KankakeeKankakee, IL+1-815549-SSSS
Broadwing CommunicationsKankakeeGrant Park, IL+1-815550-SSSS
Essex TelcomCarrollSavanna, IL+1-815551-SSSS
Ameritech IllinoisWillLockport, IL+1-815552-SSSS
Ovation Communications Of IllinoisWillJoliet, IL+1-815553-SSSS
Sprint Communications Company, L.p.Jo DaviessEast Dubuque, IL+1-815554-SSSS
Broadwing CommunicationsWillPlainfield, IL+1-815556-SSSS
Sprint Spectrum L.p.WillJoliet, IL+1-815557-SSSS
United States Cellular Corp. - IllinoisWinnebagoRockford, IL+1-815558-SSSS
Essex TelcomWhitesideFulton, IL+1-815559-SSSS
Nextel CommunicationsMchenryHarvard, IL+1-815560-SSSS
Frontier NorthOgleRochelle, IL+1-815561-SSSS
Frontier NorthOgleRochelle, IL+1-815562-SSSS
Frontier NorthStephensonDakota, IL+1-815563-SSSS
Ameritech IllinoisWhitesideSterling, IL+1-815564-SSSS
Sprint Communications Company, L.p.WhitesideMorrison, IL+1-815565-SSSS
Level 3 CommunicationsBooneBelvidere, IL+1-815566-SSSS
Frontier NorthLivingstonEmington, IL+1-815567-SSSS
Ameritech IllinoisMchenryMarengo, IL+1-815568-SSSS
Frontier NorthBooneCapron, IL+1-815569-SSSS
Level 3 CommunicationsDekalbSandwich, IL+1-815570-SSSS
Sprint Communications Company, L.p.Shannon, IL+1-815571-SSSS
Broadwing CommunicationsMchenryMarengo, IL+1-815572-SSSS
Level 3 CommunicationsKankakeeKankakee, IL+1-815573-SSSS
Essex TelcomLeeHarmon, IL+1-815574-SSSS
New Cingular Wireless PCSMchenryWoodstock, IL+1-815575-SSSS
Essex TelcomOglePolo, IL+1-815576-SSSS
Ameritech IllinoisWillPlainfield, IL+1-815577-SSSS
Ameritech IllinoisMchenryMchenry, IL+1-815578-SSSS
Sprint Spectrum L.p.La SalleLa Salle, IL+1-815579-SSSS
AT&T LocalWinnebagoRockford, IL+1-815580-SSSS
Comcast Phone Of Illinois DBA ComcoMchenrySpring Grove, IL+1-815581-SSSS
T-mobile UsaWillJoliet, IL+1-815582-SSSS
Essex TelcomWhitesideMorrison, IL+1-815583-SSSS
Ameritech IllinoisLivingstonDwight, IL+1-815584-SSSS
Level 3 CommunicationsGrundyMorris, IL+1-815585-SSSS
C-r Telephone Co.La SalleRansom, IL+1-815586-SSSS
Level 3 CommunicationsLa SalleOttawa, IL+1-815587-SSSS
Ameritech IllinoisWillLockport, IL+1-815588-SSSS
Citizens Telecom Co Illinois-frontier Citizens -ilWhitesideFulton, IL+1-815589-SSSS
Sprint Spectrum L.p.WhitesideSterling, IL+1-815590-SSSS
Frontier NorthJo DaviessHanover, IL+1-815591-SSSS
Cellco Partnership DBA Verizon WirelessKankakeeKankakee, IL+1-815592-SSSS
AT&T LocalDekalbDekalb, IL+1-815593-SSSS
Frontier NorthJo DaviessApple River, IL+1-815594-SSSS
AT&T LocalOgleOregon, IL+1-815595-SSSS
Sbc Internet ServicesMarengo, IL+1-815596-SSSS
Frontier NorthBooneGarden Prairie, IL+1-815597-SSSS
Frontier NorthJo DaviessElizabeth, IL+1-815598-SSSS
Frontier NorthStephensonFreeport, IL+1-815599-SSSS
New Cingular Wireless PCSWillJoliet, IL+1-815600-SSSS
Bitwise CommunicationsWinnebagoRockford, IL+1-815601-SSSS
Globalcom-ilKankakeeKankakee, IL+1-815602-SSSS
T-mobile UsaKankakeeKankakee, IL+1-815603-SSSS
Essex TelcomLeeDixon, IL+1-815604-SSSS

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