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779 Area Code

Area Code 779 Details

State: Illinois
Major City: Dekalb
Timezone: Central
Current time: 12:32pm
Short URL: allareacodes.com/779
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Area Code 779 Map

Click Here for a Printable Map: 779 Area Code Map

Major Cities in Area Code 779

  • Belvidere, IL
  • Crystal Lake, IL
  • De Kalb, IL
  • Freeport, IL
  • Joliet, IL
  • Kankakee, IL
  • Loves Park, IL
  • Machesney Park, IL
  • Mchenry, IL
  • Rockford, IL
  • Romeoville, IL
  • Woodstock, IL

Recent Changes for the 779 Area Code

Date Change
1/18/2011 Area code 779 was put into service when (779) 200- was introduced as the first prefix.

Area Code 779 Prefixes

Prefix Primary City Company County Usage Introduced
(779) 200- Rockford, IL Cellco Partnership DBA Verizon Wireless Unknown 01/18/2011
(779) 214- Galena, IL Mediacom Telephony Of Illinois Unknown 12/17/2009
(779) 220- Bandwidth.com Clec Unknown 05/25/2011
(779) 221- Rockford, IL Infotelecom Unknown 04/02/2010
(779) 222- Dekalb, IL Cygnus Telecommunications Corporation Unknown
(779) 232- Wilmington, IL Teleport Communications Group - Chicago Unknown 06/07/2007
(779) 235- Crescent City, IL Sbc Internet Services Unknown
(779) 245- Sterling, IL Iowa Wireless Services, Lp Unknown 07/14/2008
(779) 279- Joliet, IL Denali Spectrum License Unknown 10/29/2008
(779) 300- Rockford, IL Sprint Spectrum L.p. Unknown 02/17/2011
(779) 324- Frankfort, IL Bandwidth.com Clec Unknown 08/17/2010
(779) 348- Rockford, IL Teleport Communications Group - Chicago Unknown 06/13/2007
(779) 368- New Milford, IL Comcast Phone Of Illinois DBA Comco Unknown 08/21/2007
(779) 379- Joliet, IL Denali Spectrum License Unknown 10/29/2008
(779) 382- Genoa, IL Charter Fiberlink - Illinois Unknown 05/07/2007
(779) 400- Dekalb, IL Ymax Communications Corp. Unknown 02/17/2011
(779) 423- Rockford, IL Comcast Phone Of Illinois DBA Comco Unknown 08/08/2007
(779) 429- Wilmington, IL Cygnus Telecommunications Corporation Unknown 11/13/2008
(779) 432- Sheffield, IL Mtco Communications Unknown 03/27/2007
(779) 435- Joliet, IL Ameritech Illinois Unknown 11/13/2006
(779) 444- Wonder Lake, IL Bandwidth.com Clec Unknown 08/17/2010
(779) 456- Joliet, IL T-mobile Usa Unknown 01/09/2008
(779) 475- Beloit, IL Charter Fiberlink - Illinois Unknown 03/27/2007
(779) 500- Rockford, IL Teleport Communications Group - Chicago Unknown 03/16/2011
(779) 529- Manteno, IL Bandwidth.com Clec Unknown 08/17/2010
(779) 537- Rockford, IL Cellco Partnership DBA Verizon Wireless Unknown 03/27/2007
(779) 545- Mt Morris, IL Comcast Phone Of Illinois DBA Comco Unknown 08/08/2007
(779) 548- Marengo, IL Bandwidth.com Clec Unknown 08/16/2010
(779) 552- Belvidere, IL Digital Network Access Communications Unknown 06/04/2007
(779) 696- Rockford, IL Mcleodusa Telecommunications Services- Il Unknown 08/18/2010
(779) 770- Rockford, IL Denali Spectrum License Unknown 11/18/2008
(779) 771- Rockford, IL Denali Spectrum License Unknown 11/18/2008
(779) 772- Rockford, IL Denali Spectrum License Unknown 11/18/2008
(779) 777- Dekalb, IL Denali Spectrum License Unknown 10/22/2008
(779) 861- Dixon, IL Cellco Partnership DBA Verizon Wireless Unknown 05/26/2010
(779) 863- Unknown 12/01/2008
(779) 875- Joliet, IL Sprint Spectrum L.p. Unknown 07/12/2007
(779) 999- Newark, IL Cygnus Telecommunications Corporation Unknown 09/24/2010

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