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Updated Jan 02, 2010Area Code 779
  1. "E" is Eastern Time Zone, "C" is Central Time Zone, "M" is Mountain Time Zone, and "P" is Pacific Time Zone. Occasionally, an area code will fall in more than one time zone. In this case, the abbreviation is a combination of the previous abbreviations. Some area codes are shown with time zones referencing Universal Coordinated Time (UTC).
  2. Additional technical status can be retrived from the North American Numbering Plan Administration on the 779 area code specific link here.
Area Code779 (area code map)
LocationIllinois
Dates and historical informationArea code 779 went live into service on March 17, 2007 (The paperwork process started on February 06, 2004).  It was formed as a subdivision of the 815 area code.
Growth StatusThis area code went live on March 17, 2007 as a result of a subdivision of the 815 area code.  
Technical Status 2Area code 779 is currently live and in service.
Time Zone(s) 1C
LATA numbers served358, 360, 364, 368, 354
Number of rate centers served9
List of rate centersWILMINGTON, JOLIET, ROCKFORD, NEWMILFORD, GENOA, SHEFFIELD, SO BELOIT, MT MORRIS, BELVIDERE
Number of major cities served24
Names of major cities served (ZIP code)(00000), Wilmington (60481), Custer Park (60481), Ballou (60481), Lorenzo (60481), Ritchie (60481), Symerton (60481), Sterling (61081), Coleta (61081), Rockford (61108), Rockford (61109), Morristown (61109), New Milford (61109), Genoa (60135), Sheffield (61361), Joliet (60432), Downtown Station Joliet (60432), Beloit (53511), Mount Morris (61054), Mt Morris (61054), Belvidere (61008), Dekalb (60115), Coal City (60416), Carbon Hill (60416), Diamond (60416), Eileen (60416)
Number of exchanges served15
List of exchanges served779-232-xxxx, 779-279-xxxx, 779-348-xxxx, 779-368-xxxx, 779-382-xxxx, 779-423-xxxx, 779-432-xxxx, 779-435-xxxx, 779-456-xxxx, 779-475-xxxx, 779-537-xxxx, 779-545-xxxx, 779-552-xxxx, 779-863-xxxx, 779-875-xxxx
Number of telephone companies15 telephone companies servicing the 779 area code
List of telephone companiesTELEPORT COMMUNICATIONS GROUP - CHICAGO, BROADWING COMMUNICATIONS, LLC - IL, LEVEL 3 COMMUNICATIONS, LLC - IL, CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL, NEW CINGULAR WIRELESS PCS, LLC - IL, SPRINT SPECTRUM L.P., COMCAST PHONE OF ILLINOIS, LLC - IL, AT&T LOCAL, CHARTER FIBERLINK - ILLINOIS, LLC - IL, MTCO COMMUNICATIONS, INC., AMERITECH ILLINOIS, PAETEC COMMUNICATIONS, INC. - IL, T-MOBILE USA, INC., DIGITAL NETWORK ACCESS COMMUNICATIONS, INC. - IL, ESSEX TELCOM, INC.

779 Area Code Map

 
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