331 Area Code

Area Code 331 Map

Click Here for a Printable Map: 331 Area Code Map

Major Cities in Area Code 331

Addison, IL
Aurora, IL
Bartlett, IL
Batavia, IL
Bensenville, IL
Bloomingdale, IL
Bolingbrook, IL
Carol Stream, IL
Darien, IL
Downers Grove, IL
Elmhurst, IL
Glen Ellyn, IL
Glendale Heights, IL
Hanover Park, IL
Lisle, IL
Lombard, IL
Naperville, IL
Roselle, IL
St. Charles, IL
Streamwood, IL
Villa Park, IL
West Chicago, IL
Westmont, IL
Wheaton, IL
Woodridge, IL

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Area Code 331 Details

StateIllinois
Major CityDowners Grove
Timezone:Central
Current time:6:45pm
Short URL:allareacodes.com/331
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Recent Changes for the 331 Area Code

DateChange
1/21/2009Area code 331 was put into service when (331) 221- was introduced as the first prefix.


Area Code 331 Prefixes

PrefixPrimary CityCompanyCountyUsageIntroduced
(331) 200-T-mobile UsaUnknown07/11/2011
(331) 220-Sprint Spectrum L.p.Unknown07/12/2011
(331) 221-Elmhurst, ILAmeritech IllinoisUnknown01/21/2009
(331) 222-Saint Charles, ILDenali Spectrum LicenseUnknown10/28/2008
(331) 223-Saint Charles, ILDenali Spectrum LicenseUnknown10/28/2008
(331) 248-Geneva, ILComcast Phone Of Illinois DBA ComcoUnknown07/06/2007
(331) 262-Aurora, ILSprint Spectrum L.p.Unknown07/30/2008
(331) 330-Oswego, ILDenali Spectrum LicenseUnknown
(331) 332-Naperville, ILDenali Spectrum LicenseUnknown11/03/2008
(331) 333-Naperville, ILDenali Spectrum LicenseUnknown11/03/2008
(331) 422-Saint Charles, ILLevel 3 CommunicationsUnknown11/13/2008
(331) 425-Aurora, ILT-mobile UsaUnknown07/11/2007
(331) 431-Aurora, ILBandwidth.com ClecUnknown05/26/2010
(331) 442-Saint Charles, ILCellco Partnership DBA Verizon WirelessUnknown10/30/2008
(331) 444-Naperville, ILCygnus Telecommunications CorporationUnknown08/04/2010
(331) 452-Aurora, ILCellco Partnership DBA Verizon WirelessUnknown09/20/2007
(331) 454-Aurora, ILDenali Spectrum LicenseUnknown05/07/2009
(331) 456-Roselle, ILGlobalcom-ilUnknown12/05/2007
(331) 457-Naperville, ILCellco Partnership DBA Verizon WirelessUnknown11/14/2008
(331) 462-Lombard, ILXo IllinoisUnknown08/23/2008
(331) 465-West Chicago, ILNew Cingular Wireless PCSUnknown10/17/2007
(331) 472-Naperville, ILT-mobile UsaUnknown10/22/2008
(331) 481-Downers Grove, ILCellco Partnership DBA Verizon WirelessUnknown10/29/2008
(331) 551-Lombard, ILDenali Spectrum LicenseUnknown11/05/2008
(331) 552-Unknown11/05/2008
(331) 553-Unknown11/05/2008
(331) 575-Aurora, ILSprint Spectrum L.p.Unknown09/18/2007
(331) 588-Saint Charles, ILNew Cingular Wireless PCSUnknown02/15/2010
(331) 591-Elmhurst, ILUnknown09/28/2007
(331) 625-Downers Grove, ILCellco Partnership DBA Verizon WirelessUnknown10/16/2009
(331) 642-Elmhurst, ILBandwidth.com ClecUnknown06/19/2008
(331) 643-Aurora, ILSprint Spectrum L.p.Unknown09/18/2007
(331) 645-Elmhurst, ILSprint Spectrum L.p.Unknown11/05/2007
(331) 684-Aurora, ILSigecomUnknown07/12/2007
(331) 725-Oswego, ILNew Cingular Wireless PCSUnknown05/19/2009
(331) 777-Downers Grove, ILCygnus Telecommunications CorporationUnknown09/22/2010
(331) 825-Geneva, ILDigital Network Access CommunicationsUnknown11/08/2007
(331) 826-Elmhurst, ILSprint Spectrum L.p.Unknown11/18/2008
(331) 888-Warrenville, ILCygnus Telecommunications CorporationUnknown09/24/2010
(331) 999-Oswego, ILCygnus Telecommunications CorporationUnknown09/22/2010

Most Searched Numbers

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Prefixes with the Most Subscribers

(331) 220-
(331) 333-
(331) 456-
(331) 553-
(331) 684-
(331) 221-
(331) 422-
(331) 457-
(331) 575-
(331) 725-
(331) 222-
(331) 425-
(331) 462-
(331) 588-
(331) 777-
(331) 223-
(331) 431-
(331) 465-
(331) 591-
(331) 825-
(331) 248-
(331) 442-
(331) 472-
(331) 625-
(331) 826-
(331) 262-
(331) 444-
(331) 481-
(331) 642-
(331) 888-
(331) 330-
(331) 452-
(331) 551-
(331) 643-
(331) 999-
(331) 200-
(331) 332-
(331) 454-
(331) 552-
(331) 645-

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