779 Prefixes/Exchanges

The three digits following the area code of a phone number are known as the prefix or exchange. The remaining numbers (last 4 digits of phone number) all refer to that prefix/exhange.

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Prefixes

location/Company

779-200ROCKFORD, IL
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
Date Assigned: 2011-01-18
779-201LA SALLE, IL
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
Date Assigned: 2012-03-15
779-202GALENA, IL
TELEPORT COMMUNICATIONS GROUP - CHICAGO
Date Assigned: 2012-03-06
779-203ROCKFORD, IL
SPRINT SPECTRUM L.P.
Date Assigned: 2011-10-13
779-210ROCKFORD, IL
SBC INTERNET SERVICES, INC.
Date Assigned: 2011-09-16
779-211

779-214GALENA, IL
MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL
Date Assigned: 2009-12-17
779-217

779-219

779-220CRYSTAL LK, IL
BANDWIDTH.COM CLEC, LLC - IL
Date Assigned: 2011-05-25
779-221ROCKFORD, IL
INFOTELECOM, LLC - IL
Date Assigned: 2010-04-02
779-222SYCAMORE, IL
CYGNUS TELECOMMUNICATIONS CORPORATION - IL
Date Assigned: 2010-08-05
779-223OGLESBY, IL
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
Date Assigned: 2011-07-18
779-224

779-225JOLIET, IL
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
Date Assigned: 2011-09-21
779-232WILMINGTON, IL
TELEPORT COMMUNICATIONS GROUP - CHICAGO
Date Assigned: 2007-06-07
779-233JOLIET, IL
SPRINT SPECTRUM L.P.
Date Assigned: 2011-07-21
779-235CRESCENTCY, IL
SBC INTERNET SERVICES, INC.
Date Assigned: 2011-02-04
779-236KANKAKEE, IL
SPRINT SPECTRUM L.P.
Date Assigned: 2011-07-27
779-245STERLING, IL
IOWA WIRELESS SERVICES, LP
Date Assigned: 2008-07-14
779-256ROCKFORD, IL
SPRINT SPECTRUM L.P.
Date Assigned: 2011-11-08
779-279JOLIET, IL
DENALI SPECTRUM LICENSE, LLC
Date Assigned: 2008-10-29
779-300ROCKFORD, IL
SPRINT SPECTRUM L.P.
Date Assigned: 2011-02-17
779-309

779-311

779-312

779-324FRANKFORT, IL
BANDWIDTH.COM CLEC, LLC - IL
Date Assigned: 2010-08-17
779-331

779-348ROCKFORD, IL
TELEPORT COMMUNICATIONS GROUP - CHICAGO
Date Assigned: 2007-06-13
779-368NEWMILFORD, IL
COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL
Date Assigned: 2007-08-21
779-379JOLIET, IL
DENALI SPECTRUM LICENSE, LLC
Date Assigned: 2008-10-29
779-382GENOA, IL
CHARTER FIBERLINK - ILLINOIS, LLC - IL
Date Assigned: 2007-05-07
779-400DE KALB, IL
YMAX COMMUNICATIONS CORP. - IL
Date Assigned: 2011-02-17
779-411

779-423ROCKFORD, IL
COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL
Date Assigned: 2007-08-08
779-429WILMINGTON, IL
CYGNUS TELECOMMUNICATIONS CORPORATION - IL
Date Assigned: 2008-11-13
779-432SHEFFIELD, IL
MTCO COMMUNICATIONS, INC.
Date Assigned: 2007-03-27
779-435JOLIET, IL
AMERITECH ILLINOIS
Date Assigned: 2006-11-13
779-444WONDERLAKE, IL
BANDWIDTH.COM CLEC, LLC - IL
Date Assigned: 2010-08-17
779-456JOLIET, IL
T-MOBILE USA, INC.
Date Assigned: 2008-01-09
779-475SO BELOIT, IL
CHARTER FIBERLINK - ILLINOIS, LLC - IL
Date Assigned: 2007-03-27
779-500ROCKFORD, IL
TELEPORT COMMUNICATIONS GROUP - CHICAGO
Date Assigned: 2011-03-16
779-511

779-529MANTENO, IL
BANDWIDTH.COM CLEC, LLC - IL
Date Assigned: 2010-08-17
779-537ROCKFORD, IL
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
Date Assigned: 2007-03-27
779-545MT MORRIS, IL
COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL
Date Assigned: 2007-08-08
779-548MARENGO, IL
BANDWIDTH.COM CLEC, LLC - IL
Date Assigned: 2010-08-16
779-552BELVIDERE, IL
DIGITAL NETWORK ACCESS COMMUNICATIONS, INC. - IL
Date Assigned: 2007-06-04
779-555

779-563

779-608

779-611

779-618

779-630

779-696ROCKFORD, IL
MCLEODUSA TELECOMMUNICATIONS SERVICES, INC.- IL
Date Assigned: 2010-08-18
779-700

779-708

779-711

779-770ROCKFORD, IL
DENALI SPECTRUM LICENSE, LLC
Date Assigned: 2008-11-18
779-771ROCKFORD, IL
DENALI SPECTRUM LICENSE, LLC
Date Assigned: 2008-11-18
779-772ROCKFORD, IL
DENALI SPECTRUM LICENSE, LLC
Date Assigned: 2008-11-18
779-773

779-774ROCKFORD, IL
TDS METROCOM INC.-IL
Date Assigned: 2012-02-01
779-777DE KALB, IL
DENALI SPECTRUM LICENSE, LLC
Date Assigned: 2008-10-22
779-779

779-811

779-815

779-847

779-861DIXON, IL
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
Date Assigned: 2010-05-26
779-872

779-875JOLIET, IL
SPRINT SPECTRUM L.P.
Date Assigned: 2007-07-12
779-911

779-950

779-958
AMERITECH ILLINOIS
779-959
AMERITECH ILLINOIS
779-976

779-999NEWARK, IL
CYGNUS TELECOMMUNICATIONS CORPORATION - IL
Date Assigned: 2010-09-24
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