North American Telephone Operator
North American
Telephone Operator

Telephone Area 815. .

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: 2345678910
Company District Major City Prefix
Paetec CommunicationsLa Salle, IL+1-815200-SSSS
Usa Mobility WirelessWinnebagoRockford, IL+1-815201-SSSS
New Cingular Wireless PCSWinnebagoOglesby, IL+1-815202-SSSS
Usa Mobility WirelessWillJoliet, IL+1-815203-SSSS
Usa Mobility WirelessMchenryCrystal Lake, IL+1-815204-SSSS
Usa Mobility WirelessCookLa Grange Park, IL+1-815205-SSSS
Ameritech IllinoisMchenryWoodstock, IL+1-815206-SSSS
AT&T LocalWillJoliet, IL+1-815207-SSSS
Sprint Communications Company, L.p.WhitesideFulton, IL+1-815208-SSSS
Level 3 CommunicationsWinnebagoRockford, IL+1-815209-SSSS
New Cingular Wireless PCSWillJoliet, IL+1-815210-SSSS
T-mobile UsaWillJoliet, IL+1-815212-SSSS
United States Cellular Corp. - IllinoisWhitesideSterling, IL+1-815213-SSSS
Rcn Telecom Services Of IllinoisKankakeeKankakee, IL+1-815214-SSSS
Globalcom-ilWillNew Lenox, IL+1-815215-SSSS
Cellco Partnership DBA Verizon WirelessKankakeeKankakee, IL+1-815216-SSSS
Digital Network Access CommunicationsDekalbDekalb, IL+1-815217-SSSS
Cellco Partnership DBA Verizon WirelessWinnebagoRockford, IL+1-815218-SSSS
United States Cellular Corp. - IllinoisCrystal Lake, IL+1-815219-SSSS
Ameritech IllinoisLa SalleLa Salle, IL+1-815220-SSSS
Teleport Communications Group - ChicagoWillLockport, IL+1-815221-SSSS
Cellco Partnership DBA Verizon WirelessWinnebagoRockford, IL+1-815222-SSSS
Ameritech IllinoisLa SalleLa Salle, IL+1-815223-SSSS
Ameritech IllinoisLa SalleLa Salle, IL+1-815224-SSSS
Citizens Telecom Co Illinois-frontier Citizens -ilCarrollMilledgeville, IL+1-815225-SSSS
Ameritech IllinoisWinnebagoRockford, IL+1-815226-SSSS
Ameritech IllinoisWinnebagoRockford, IL+1-815227-SSSS
New Cingular Wireless PCSLa SalleOglesby, IL+1-815228-SSSS
Ameritech IllinoisWinnebagoRockford, IL+1-815229-SSSS
Broadwing CommunicationsWillPlainfield, IL+1-815230-SSSS
Ameritech IllinoisWinnebagoRockford, IL+1-815231-SSSS
Frontier NorthStephensonFreeport, IL+1-815232-SSSS
Frontier NorthStephensonFreeport, IL+1-815233-SSSS
Frontier NorthOgleByron, IL+1-815234-SSSS
Frontier NorthStephensonFreeport, IL+1-815235-SSSS
New Cingular Wireless PCSMchenryWoodstock, IL+1-815236-SSSS
Ameritech IllinoisGrundyGardner, IL+1-815237-SSSS
Cellco Partnership DBA Verizon WirelessStephensonFreeport, IL+1-815238-SSSS
Frontier NorthWinnebagoPecatonica, IL+1-815239-SSSS
Charter Fiberlink - IllinoisWillRockford, IL+1-815240-SSSS
American Messaging (am)CookNorthbrook, IL+1-815241-SSSS
Usa Mobility WirelessWinnebagoRockford, IL+1-815242-SSSS
United States Cellular Corp. - IllinoisWinnebagoRockford, IL+1-815243-SSSS
Gallatin River Communications DBA CenturylinkCarrollMt Carroll, IL+1-815244-SSSS
New Cingular Wireless PCSMchenryWoodstock, IL+1-815245-SSSS
Frontier NorthLa SalleEarlville, IL+1-815246-SSSS
Frontier NorthWinnebagoPecatonica, IL+1-815247-SSSS
Frontier NorthWinnebagoDurand, IL+1-815248-SSSS
Frontier NorthLa SalleGrand Ridge, IL+1-815249-SSSS
Comcast Phone Of Illinois DBA ComcoLa Salle, IL+1-815250-SSSS
Gallatin River Communications DBA CenturylinkWhitesideRock Falls, IL+1-815251-SSSS
New Cingular Wireless PCSLa SalleOglesby, IL+1-815252-SSSS
Frontier Communications Of IllinoisFordKempton, IL+1-815253-SSSS
Ameritech IllinoisWillPlainfield, IL+1-815254-SSSS
Us Xchange Of Illinois LLC DBA Choice One Comm IlMchenryMinooka, IL+1-815255-SSSS
Stelle Telephone Co.FordStelle, IL+1-815256-SSSS
Illinois Valley Cellular Rsa 2-ii PartnershipLa SalleStreator, IL+1-815257-SSSS
New Cingular Wireless PCSWillJoliet, IL+1-815258-SSSS
Gallatin River Communications DBA CenturylinkCarrollThomson, IL+1-815259-SSSS
United States Cellular Corp. - IllinoisWillJoliet, IL+1-815260-SSSS
Mci Worldcom CommunicationsMchenryCrystal Lake, IL+1-815261-SSSS
Cellco Partnership DBA Verizon WirelessWinnebagoRockford, IL+1-815262-SSSS
Cellco Partnership DBA Verizon WirelessKankakeeKankakee, IL+1-815263-SSSS
Frontier NorthDekalbWaterman, IL+1-815264-SSSS
Ameritech IllinoisIroquoisGilman, IL+1-815265-SSSS
Frontier NorthStephensonFreeport, IL+1-815266-SSSS
Mci Worldcom CommunicationsWillPlainfield, IL+1-815267-SSSS
Ameritech IllinoisIroquoisOnarga, IL+1-815268-SSSS
Frontier Communications Of The Carolinas, IncIroquoisDanforth, IL+1-815269-SSSS
Charter Fiberlink - IllinoisLanark, IL+1-815270-SSSS
Mci Worldcom CommunicationsMchenryMchenry, IL+1-815271-SSSS
Mci Worldcom CommunicationsWillJoliet, IL+1-815272-SSSS
Gallatin River Communications DBA CenturylinkCarrollSavanna, IL+1-815273-SSSS
New Cingular Wireless PCSWillJoliet, IL+1-815274-SSSS
Cellco Partnership DBA Verizon WirelessStephensonFreeport, IL+1-815275-SSSS
Teleport Communications Group - ChicagoMchenryCrystal Lake, IL+1-815276-SSSS
Teleport Communications Group - ChicagoWillFrankfort, IL+1-815277-SSSS
Cellco Partnership DBA Verizon WirelessKankakeeKankakee, IL+1-815278-SSSS
American Messaging (am)KankakeeKankakee, IL+1-815279-SSSS
Teleport Communications Group - ChicagoWillJoliet, IL+1-815280-SSSS

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