Telephone Area +1 (815) XXX-XXXX Page 4. Rockford

Telephone Area +1 (815) XXX-XXXX / Page 4

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: 1 2 3 46 7 8 9 10

Company	District	Major City	Prefix
Teleport Communications Group - Chicago	Will	Lockport, IL	+1 (815) 524-XXXX
Tds Metrocom Inc.-il	Winnebago	Beloit, IL	+1 (815) 525-XXXX
Teleport Communications Group - Chicago	Mchenry	Crystal Lake, IL	+1 (815) 526-XXXX
Teleport Communications Group - Chicago	Mchenry	Woodstock, IL	+1 (815) 527-XXXX
Teleport Communications Group - Chicago	Mchenry	Mchenry, IL	+1 (815) 528-XXXX
Cellco Partnership DBA Verizon Wireless	Mchenry	Woodstock, IL	+1 (815) 529-XXXX
Nextel Communications	Will	Joliet, IL	+1 (815) 530-XXXX
Teleport Communications Group - Chicago	Will	Joliet, IL	+1 (815) 531-XXXX
Usa Mobility Wireless	Grundy	Morris, IL	+1 (815) 532-XXXX
Indiana Paging Ntwk	Cook	La Grange Park, IL	+1 (815) 533-XXXX
Level 3 Communications	Will	Frankfort, IL	+1 (815) 534-XXXX
Ameritech Illinois	Whiteside	Sterling, IL	+1 (815) 535-XXXX
Usa Mobility Wireless	Cook	La Grange Park, IL	+1 (815) 536-XXXX
Citizens Telecom Co Illinois-frontier Citizens -il	Whiteside	Prophetstown, IL	+1 (815) 537-XXXX
Frontier North	La Salle	Mendota, IL	+1 (815) 538-XXXX
Frontier North	La Salle	Mendota, IL	+1 (815) 539-XXXX
Sprint Spectrum L.p.	Winnebago	Rockford, IL	+1 (815) 540-XXXX
United States Cellular Corp. - Illinois	Stephenson	Freeport, IL	+1 (815) 541-XXXX
Citizens Telecom Co Illinois-frontier Citizens -il	Whiteside	Tampico, IL	+1 (815) 542-XXXX
United States Cellular Corp. - Illinois	Winnebago	Rockford, IL	+1 (815) 543-XXXX
Frontier North	Boone	Belvidere, IL	+1 (815) 544-XXXX
New Cingular Wireless PCS	Will	Joliet, IL	+1 (815) 545-XXXX
New Cingular Wireless PCS	Will	Joliet, IL	+1 (815) 546-XXXX
Frontier North	Boone	Belvidere, IL	+1 (815) 547-XXXX
Ameritech Illinois	Whiteside	Sterling, IL	+1 (815) 548-XXXX
Sprint Spectrum L.p.	Kankakee	Kankakee, IL	+1 (815) 549-XXXX
Broadwing Communications	Kankakee	Grant Park, IL	+1 (815) 550-XXXX
Essex Telcom	Carroll	Savanna, IL	+1 (815) 551-XXXX
Ameritech Illinois	Will	Lockport, IL	+1 (815) 552-XXXX
Ovation Communications Of Illinois	Will	Joliet, IL	+1 (815) 553-XXXX
Sprint Communications Company, L.p.	Jo Daviess	East Dubuque, IL	+1 (815) 554-XXXX
Broadwing Communications	Will	Plainfield, IL	+1 (815) 556-XXXX
Sprint Spectrum L.p.	Will	Joliet, IL	+1 (815) 557-XXXX
United States Cellular Corp. - Illinois	Winnebago	Rockford, IL	+1 (815) 558-XXXX
Essex Telcom	Whiteside	Fulton, IL	+1 (815) 559-XXXX
Nextel Communications	Mchenry	Harvard, IL	+1 (815) 560-XXXX
Frontier North	Ogle	Rochelle, IL	+1 (815) 561-XXXX
Frontier North	Ogle	Rochelle, IL	+1 (815) 562-XXXX
Frontier North	Stephenson	Dakota, IL	+1 (815) 563-XXXX
Ameritech Illinois	Whiteside	Sterling, IL	+1 (815) 564-XXXX
Sprint Communications Company, L.p.	Whiteside	Morrison, IL	+1 (815) 565-XXXX
Level 3 Communications	Boone	Belvidere, IL	+1 (815) 566-XXXX
Frontier North	Livingston	Emington, IL	+1 (815) 567-XXXX
Ameritech Illinois	Mchenry	Marengo, IL	+1 (815) 568-XXXX
Frontier North	Boone	Capron, IL	+1 (815) 569-XXXX
Level 3 Communications	Dekalb	Sandwich, IL	+1 (815) 570-XXXX
Sprint Communications Company, L.p.		Shannon, IL	+1 (815) 571-XXXX
Broadwing Communications	Mchenry	Marengo, IL	+1 (815) 572-XXXX
Level 3 Communications	Kankakee	Kankakee, IL	+1 (815) 573-XXXX
Essex Telcom	Lee	Harmon, IL	+1 (815) 574-XXXX
New Cingular Wireless PCS	Mchenry	Woodstock, IL	+1 (815) 575-XXXX
Essex Telcom	Ogle	Polo, IL	+1 (815) 576-XXXX
Ameritech Illinois	Will	Plainfield, IL	+1 (815) 577-XXXX
Ameritech Illinois	Mchenry	Mchenry, IL	+1 (815) 578-XXXX
Sprint Spectrum L.p.	La Salle	La Salle, IL	+1 (815) 579-XXXX
AT&T Local	Winnebago	Rockford, IL	+1 (815) 580-XXXX
Comcast Phone Of Illinois DBA Comco	Mchenry	Spring Grove, IL	+1 (815) 581-XXXX
T-mobile Usa	Will	Joliet, IL	+1 (815) 582-XXXX
Essex Telcom	Whiteside	Morrison, IL	+1 (815) 583-XXXX
Ameritech Illinois	Livingston	Dwight, IL	+1 (815) 584-XXXX
Level 3 Communications	Grundy	Morris, IL	+1 (815) 585-XXXX
C-r Telephone Co.	La Salle	Ransom, IL	+1 (815) 586-XXXX
Level 3 Communications	La Salle	Ottawa, IL	+1 (815) 587-XXXX
Ameritech Illinois	Will	Lockport, IL	+1 (815) 588-XXXX
Citizens Telecom Co Illinois-frontier Citizens -il	Whiteside	Fulton, IL	+1 (815) 589-XXXX
Sprint Spectrum L.p.	Whiteside	Sterling, IL	+1 (815) 590-XXXX
Frontier North	Jo Daviess	Hanover, IL	+1 (815) 591-XXXX
Cellco Partnership DBA Verizon Wireless	Kankakee	Kankakee, IL	+1 (815) 592-XXXX
AT&T Local	Dekalb	Dekalb, IL	+1 (815) 593-XXXX
Frontier North	Jo Daviess	Apple River, IL	+1 (815) 594-XXXX
AT&T Local	Ogle	Oregon, IL	+1 (815) 595-XXXX
Sbc Internet Services		Marengo, IL	+1 (815) 596-XXXX
Frontier North	Boone	Garden Prairie, IL	+1 (815) 597-XXXX
Frontier North	Jo Daviess	Elizabeth, IL	+1 (815) 598-XXXX
Frontier North	Stephenson	Freeport, IL	+1 (815) 599-XXXX
New Cingular Wireless PCS	Will	Joliet, IL	+1 (815) 600-XXXX
Bitwise Communications	Winnebago	Rockford, IL	+1 (815) 601-XXXX
Globalcom-il	Kankakee	Kankakee, IL	+1 (815) 602-XXXX
T-mobile Usa	Kankakee	Kankakee, IL	+1 (815) 603-XXXX
Essex Telcom	Lee	Dixon, IL	+1 (815) 604-XXXX

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