USA Phone Code Guide
USA Phone
Code Guide

Telephone Area +1 (815) XXX-XXXX / Page 2

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) XXX-XXXX

Other pages: 1245678910
Company District Major City Prefix
Frontier NorthStephensonGerman Valley, IL+1 (815) 362-XXXX
Ameritech IllinoisMchenryMchenry, IL+1 (815) 363-XXXX
Broadwing CommunicationsGrundyMorris, IL+1 (815) 364-XXXX
Frontier NorthKankakeeReddick, IL+1 (815) 365-XXXX
Broadwing CommunicationsLa SalleOttawa, IL+1 (815) 366-XXXX
Frontier NorthStephensonWinslow, IL+1 (815) 367-XXXX
Frontier NorthLa SalleLostant, IL+1 (815) 368-XXXX
Frontier NorthStephensonLena, IL+1 (815) 369-XXXX
Cellco Partnership DBA Verizon WirelessKankakeeKankakee, IL+1 (815) 370-XXXX
Broadwing CommunicationsLa SalleUtica, IL+1 (815) 371-XXXX
Ameritech IllinoisWillRomeoville, IL+1 (815) 372-XXXX
Us Xchange Of Illinois LLC DBA Choice One Comm IlWillElwood, IL+1 (815) 373-XXXX
Us Xchange Of Illinois LLC DBA Choice One Comm IlWillDwight, IL+1 (815) 374-XXXX
United States Cellular Corp. - IllinoisDekalbDekalb, IL+1 (815) 375-XXXX
Frontier NorthBureauOhio, IL+1 (815) 376-XXXX
Broadwing CommunicationsIroquoisCrescent City, IL+1 (815) 377-XXXX
Nextel CommunicationsWinnebagoRockford, IL+1 (815) 378-XXXX
Frontier NorthBureauWalnut, IL+1 (815) 379-XXXX
Essex TelcomWhitesideSterling, IL+1 (815) 380-XXXX
Ameritech IllinoisWinnebagoRockford, IL+1 (815) 381-XXXX
New Cingular Wireless PCSMchenryWoodstock, IL+1 (815) 382-XXXX
New Cingular Wireless PCSIroquoisCrescent City, IL+1 (815) 383-XXXX
Frontier NorthDekalbMalta, IL+1 (815) 384-XXXX
Ameritech IllinoisMchenryMchenry, IL+1 (815) 385-XXXX
Cellco Partnership DBA Verizon WirelessKankakeeKankakee, IL+1 (815) 386-XXXX
Ameritech IllinoisWinnebagoRockford, IL+1 (815) 387-XXXX
Nextel CommunicationsMchenryMchenry, IL+1 (815) 388-XXXX
Ameritech IllinoisWinnebagoBeloit, IL+1 (815) 389-XXXX
Comcast Phone Of Illinois DBA ComcoWillBraidwood, IL+1 (815) 390-XXXX
Ameritech IllinoisWinnebagoRockford, IL+1 (815) 391-XXXX
Kinsman Mutual Telephone CompanyGrundyKinsman, IL+1 (815) 392-XXXX
Frontier NorthOgleMonroe Center, IL+1 (815) 393-XXXX
Ameritech IllinoisWinnebagoRockford, IL+1 (815) 394-XXXX
Ameritech IllinoisWinnebagoRockford, IL+1 (815) 395-XXXX
Frontier NorthLeeSteward, IL+1 (815) 396-XXXX
Ameritech IllinoisWinnebagoRockford, IL+1 (815) 397-XXXX
Ameritech IllinoisWinnebagoRockford, IL+1 (815) 398-XXXX
Ameritech IllinoisWinnebagoRockford, IL+1 (815) 399-XXXX
Mediacom Telephony Of IllinoisWinnebagoMorrison, IL+1 (815) 400-XXXX
Level 3 CommunicationsKankakeeKankakee, IL+1 (815) 401-XXXX
Sprint Communications Company, L.p.Jo DaviessGalena, IL+1 (815) 402-XXXX
Sprint Spectrum L.p.MchenryMchenry, IL+1 (815) 403-XXXX
Sprint Spectrum L.p.MchenryCrystal Lake, IL+1 (815) 404-XXXX
Nextel CommunicationsWillJoliet, IL+1 (815) 405-XXXX
Frontier NorthOgleByron, IL+1 (815) 406-XXXX
Ameritech IllinoisWillRomeoville, IL+1 (815) 407-XXXX
Globalcom-ilLa SalleUtica, IL+1 (815) 408-XXXX
Cellco Partnership DBA Verizon WirelessWillJoliet, IL+1 (815) 409-XXXX
Level 3 CommunicationsLa SalleLa Salle, IL+1 (815) 410-XXXX
Broadwing CommunicationsWillFrankfort, IL+1 (815) 412-XXXX
Globalcom-ilGrundyMorris, IL+1 (815) 413-XXXX
New Cingular Wireless PCSLa SalleEarlville, IL+1 (815) 414-XXXX
Ameritech IllinoisLa SalleSeneca, IL+1 (815) 415-XXXX
Ameritech IllinoisGrundyMorris, IL+1 (815) 416-XXXX
Ameritech IllinoisWillBraidwood, IL+1 (815) 417-XXXX
Globalcom-ilWillManhattan, IL+1 (815) 418-XXXX
AT&T LocalLivingstonPontiac, IL+1 (815) 419-XXXX
Essex TelcomDekalbMalta, IL+1 (815) 420-XXXX
Ameritech IllinoisKankakeeHerscher, IL+1 (815) 421-XXXX
Ameritech IllinoisKankakeeSt Anne, IL+1 (815) 422-XXXX
Ameritech IllinoisWillElwood, IL+1 (815) 423-XXXX
Ameritech IllinoisWillElwood, IL+1 (815) 424-XXXX
Broadwing CommunicationsMchenryCrystal Lake, IL+1 (815) 425-XXXX
Ameritech IllinoisKankakeeHerscher, IL+1 (815) 426-XXXX
Ameritech IllinoisKankakeeSt Anne, IL+1 (815) 427-XXXX
Frontier NorthIroquoisMartinton, IL+1 (815) 428-XXXX
Frontier NorthIroquoisSheldon, IL+1 (815) 429-XXXX
Globalcom-ilMchenryMchenry, IL+1 (815) 430-XXXX
Ameritech IllinoisLa SalleOttawa, IL+1 (815) 431-XXXX
Ameritech IllinoisIroquoisWatseka, IL+1 (815) 432-XXXX
Ameritech IllinoisLa SalleOttawa, IL+1 (815) 433-XXXX
Ameritech IllinoisLa SalleOttawa, IL+1 (815) 434-XXXX
Frontier NorthIroquoisBeaverville, IL+1 (815) 435-XXXX
Ameritech IllinoisWillPlainfield, IL+1 (815) 436-XXXX
Frontier NorthPutnamPutnam, IL+1 (815) 437-XXXX
Citizens Telecom Co Illinois-frontier Citizens -ilWhitesideTampico, IL+1 (815) 438-XXXX
Ameritech IllinoisWillPlainfield, IL+1 (815) 439-XXXX
Cellco Partnership DBA Verizon WirelessLeeDixon, IL+1 (815) 440-XXXX
Cellco Partnership DBA Verizon WirelessWhitesideSterling, IL+1 (815) 441-XXXX
Tonica Telephone Co.La SalleTonica, IL+1 (815) 442-XXXX

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