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312 Area Code

About Area Code 312

State: Illinois
Major City: Chicago
Timezone: Central (2:36pm)
Short URL: allareacodes.com/312
Download: Download this data

Area Code 312 Map

  • Chicago, IL

More About Area Code 312

Area code 312 is one of the original 86 area codes created by AT&T and the Bell System in 1947. It originally served the Chicago metropolitan area. In 1996, area code 773 was created as an overlay to area code 312. In 2009, area code 872 was created as an overlay to area code 312. To avoid exhausting all possible phone numbers in this area code, relief planning has begun. Currently, the largest city it serves is Chicago, IL, and it overlaps coverage areas with area code 872.

Overview of Active Prefixes

Assigned to Carrier

Usage

Carriers

Active Phone Number Prefixes

Prefix
Usage
Primary City
Carrier
Introduced
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 04/01/1997
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Allegiance Telecom
Introduced 08/20/2000
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Northbrook
Cellco Partnership DBA Verizon Wireless
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 10/31/2000
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Wireless
Wheeling
New Cingular Wireless PCS
Introduced 02/11/1995
Landline
Chicago
First Communications LLC
Introduced 02/13/2012
Wireless
Chicago
United States Cellular Corp. - Illinois
Introduced 11/11/2003
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Chicago
Bandwidth.com Clec
Introduced 04/10/2012
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 06/17/2011
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Broadwing Communications
Introduced 10/13/1999
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Ameritech Illinois
Introduced 09/15/2010
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Ameritech Illinois
Introduced 06/13/2000
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Wireless
Roselle
New Cingular Wireless PCS
Introduced 01/10/1996
Wireless
Chicago
American Messaging (am)
Introduced 04/23/2001
Landline
Chicago
Ameritech Illinois
Introduced 10/13/1999
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 01/14/2000
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 10/31/2000
Landline
Chicago
Broadwing Communications
Introduced 10/13/1999
Landline
Chicago
AT&T Local
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Wireless
Chicago
New Cingular Wireless PCS
Introduced 08/17/2011
Landline
Chicago
Teleport Communications America
Introduced 08/20/2000
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Ameritech Illinois
Introduced 10/31/2000
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Wireless
Wheeling
New Cingular Wireless PCS
Introduced 02/11/1995
Landline
Chicago
First Communications LLC
Introduced 04/06/2004
Unknown
Metro PCS
Introduced 07/01/2014
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Allegiance Telecom
Introduced 01/25/1998
Landline
Chicago
Allegiance Telecom
Introduced 01/25/1998
Landline
Chicago
Allegiance Telecom
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Allegiance Telecom
Introduced 01/25/1998
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 08/18/2011
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Mcimetro Access Transmission Services LLC
Introduced 04/01/1997
Landline
Chicago
Broadwing Communications
Introduced 05/10/1999
Landline
Chicago
Allegiance Telecom
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Broadwing Communications
Introduced 07/22/1999
Landline
Chicago
Access One
Introduced 11/29/2005
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 06/13/2000
Landline
Chicago
Broadwing Communications
Introduced 03/03/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Usa Mobility Wireless
Introduced 01/25/1998
Wireless
Chicago
Usa Mobility Wireless
Introduced 07/01/1996
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 09/13/2011
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Landline
Chicago
Allegiance Telecom
Introduced 01/25/1998
Landline
Chicago
Allegiance Telecom
Introduced 01/25/1998
Landline
Chicago
Allegiance Telecom
Introduced 01/25/1998
Landline
Chicago
Broadwing Communications
Introduced 10/31/2000
Landline
Chicago
Mcimetro Access Transmission Services LLC
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Global Crossing Local Services-il
Introduced 10/13/1999
Wireless
Chicago
New Cingular Wireless PCS
Introduced 10/31/2000
Landline
Chicago
Global Crossing Local Services-il
Introduced 10/13/1999
Landline
Chicago
Xo Illinois
Introduced 06/30/2001
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 06/30/2001
Wireless
Chicago
New Cingular Wireless PCS
Introduced 06/13/2000
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 10/31/2000
Landline
Chicago
Mcimetro Access Transmission Services LLC
Introduced 01/25/1998
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Wireless
Chicago
Usa Mobility Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 06/13/2000
Wireless
Chicago
Bandwidth.com Clec
Introduced 09/02/2011
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Wireless
La Grange Park
Usa Mobility Wireless
Introduced 02/11/1995
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 01/14/2000
Landline
Chicago
Ameritech Illinois
Introduced 02/11/1995
Landline
Chicago
Sigecom
Introduced 07/22/1999
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Landline
Chicago
Net Talk.com
Introduced 04/25/2011
Wireless
Hinsdale
New Cingular Wireless PCS
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Wheeling
New Cingular Wireless PCS
Introduced 02/11/1995
Wireless
Hinsdale
New Cingular Wireless PCS
Introduced 02/11/1995
Wireless
Northbrook
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Wireless
Northbrook
Cellco Partnership DBA Verizon Wireless
Introduced 02/11/1995
Wireless
Hinsdale
New Cingular Wireless PCS
Introduced 09/11/1994
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Wheeling
New Cingular Wireless PCS
Introduced 02/11/1995
Wireless
La Grange Park
Cellco Partnership DBA Verizon Wireless
Introduced 02/11/1995
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Wireless
Chicago
American Messaging (am)
Introduced 04/13/2001
Landline
Chicago
Level 3 Communications
Introduced 05/03/2001
Landline
Chicago
Ameritech Illinois
Introduced 06/24/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Xo Illinois
Introduced 08/20/2000
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Wheeling
New Cingular Wireless PCS
Introduced 01/10/1996
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
American Messaging (am)
Introduced 04/13/2001
Landline
Chicago
First Communications LLC
Introduced 10/31/2000
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 04/01/1997
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 09/21/2011
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Wireless
Chicago
New Cingular Wireless PCS
Introduced 06/30/2001
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 07/06/1997
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Neutral Tandem-illinois
Introduced 11/14/2003
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Hinsdale
New Cingular Wireless PCS
Introduced 07/04/1995
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Roselle
New Cingular Wireless PCS
Introduced 01/10/1996
Landline
Chicago
Ameritech Illinois
Introduced 07/04/1995
Landline
Chicago
Ameritech Illinois
Introduced 01/14/2000
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Wireless
Chicago
Usa Mobility Wireless
Introduced 07/04/1995
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 10/31/2000
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Rcn Telecom Services Of Illinois
Introduced 05/10/1999
Landline
Chicago
Ameritech Illinois
Introduced 09/11/1994
Wireless
Chicago
Usa Mobility Wireless
Introduced 11/11/2003
Wireless
La Grange Park
Usa Mobility Wireless
Introduced 01/10/1996
Wireless
La Grange Park
Usa Mobility Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Chicago
Usa Mobility Wireless
Introduced 11/11/2003
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Broadwing Communications
Introduced 05/10/1999
Landline
Chicago
Ameritech Illinois
Introduced 10/13/1999
Wireless
Chicago
T-mobile Usa
Introduced 06/30/2001
Landline
Chicago
Cbeyond Communications
Introduced 06/11/2004
Landline
Chicago
Xo Illinois
Introduced 01/25/1998
Wireless
Chicago
Usa Mobility Wireless
Introduced 01/25/1998
Landline
Chicago
Ovation Communications Of Illinois
Introduced 04/10/2001
Landline
Chicago
Ameritech Illinois
Introduced 08/20/2000
Landline
Chicago
Ameritech Illinois
Introduced 05/10/1999
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 10/13/1999
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 08/20/2000
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 01/25/1998
Wireless
Chicago
Usa Mobility Wireless
Introduced 11/11/2003
Wireless
Chicago
American Messaging (am)
Introduced 04/16/2001
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Chicago
American Messaging (am)
Introduced 04/23/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
AT&T Local
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Wireless
Chicago
Usa Mobility Wireless
Introduced 01/10/1996
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 07/22/1999
Wireless
Chicago
American Messaging (am)
Introduced 04/13/2001
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
La Grange Park
Cellco Partnership DBA Verizon Wireless
Introduced 02/11/1995
Wireless
Chicago
T-mobile Usa
Introduced 10/14/2002
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Wireless
Wheeling
New Cingular Wireless PCS
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Ameritech Illinois
Introduced 09/11/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Wheeling
New Cingular Wireless PCS
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Mci Worldcom Communications
Introduced 01/10/1996
Wireless
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Usa Mobility Wireless
Introduced 09/11/1994
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Wireless
Chicago
New Cingular Wireless PCS
Introduced 06/30/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Broadwing Communications
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 09/11/1994
Landline
Chicago
Ameritech Illinois
Introduced 07/01/1996
Wireless
Chicago
Usa Mobility Wireless
Introduced 01/10/1996
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Level 3 Communications
Introduced 11/11/2003
Landline
Chicago
Global Crossing Local Services-il
Introduced 10/13/1999
Landline
Chicago
Ameritech Illinois
Introduced 05/02/2004
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Ameritech Illinois
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 07/08/2011
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 01/14/2000
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 07/22/1999
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 06/13/2000
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 08/14/1998
Landline
Chicago
Ameritech Illinois
Introduced 06/13/2000
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 08/02/2011
Wireless
Chicago
American Messaging (am)
Introduced 04/23/2001
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
T-mobile Usa
Introduced 01/25/1998
Wireless
Chicago
American Messaging (am)
Introduced 04/13/2001
Landline
Chicago
Mci Worldcom Communications
Introduced 01/10/1996
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
American Messaging (am)
Introduced 04/23/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
T-mobile Usa
Introduced 08/02/2011
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Us Xchange Of Illinois LLC DBA Choice One Comm Il
Introduced 03/26/2009
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 10/31/2000
Landline
Chicago
Mcimetro Access Transmission Services LLC
Introduced 01/10/1996
Landline
Chicago
Ameritech Illinois
Introduced 10/27/2005
Landline
Chicago
Ymax Communications Corp.
Introduced 11/15/2006
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Landline
Chicago
Sprint Spectrum L.p.
Introduced 08/20/2000
Wireless
Chicago
Level 3 Communications
Introduced 10/20/2010
Landline
Chicago
T-mobile Usa
Introduced 03/20/2014
Landline
Chicago
AT&T Local
Introduced 01/25/1998
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Mci Worldcom Communications
Introduced 04/23/2004
Landline
Chicago
Pg Telecom Of Illinois Inc.
Introduced 01/18/2006
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 08/20/2000
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 07/04/1995
Landline
Chicago
Ameritech Illinois
Introduced 07/06/1997
Wireless
Chicago
T-mobile Usa
Introduced 06/30/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Usa Mobility Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 07/01/1996
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 07/22/1999
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
La Grange Park
Cellco Partnership DBA Verizon Wireless
Introduced 02/11/1995
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Broadwing Communications
Introduced 02/04/1994
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Cimco Communications
Introduced 05/24/2004
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Peerless Network Of Illinois
Introduced 03/19/2012
Landline
Chicago
Peerless Network Of Illinois
Introduced 03/06/2012
Wireless
Hinsdale
New Cingular Wireless PCS
Introduced 02/11/1995
Wireless
Chicago
Usa Mobility Wireless
Introduced 05/01/2002
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Chicago
American Messaging (am)
Introduced 04/13/2001
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/11/1995
Wireless
Wheeling
New Cingular Wireless PCS
Introduced 02/11/1995
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
AT&T Local
Introduced 01/25/1998
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 06/30/2001
Wireless
Wheeling
New Cingular Wireless PCS
Introduced 02/11/1995
Landline
Chicago
Mcimetro Access Transmission Services LLC
Introduced 03/20/2002
Landline
Chicago
Ameritech Illinois
Introduced 07/04/1995
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Landline
Chicago
AT&T Local
Introduced 10/11/1997
Wireless
Chicago
Usa Mobility Wireless
Introduced 04/15/1996
Wireless
Hinsdale
New Cingular Wireless PCS
Introduced 02/11/1995
Wireless
Chicago
T-mobile Usa
Introduced 11/11/2003
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 10/13/1999
Landline
Chicago
Ameritech Illinois
Introduced 09/17/2008
Landline
Chicago
Ameritech Illinois
Introduced 04/15/1996
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Wireless
Chicago
New Cingular Wireless PCS
Introduced 04/01/1997
Landline
Chicago
Ameritech Illinois
Introduced 06/13/2000
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 03/03/2001
Landline
Chicago
Level 3 Communications
Introduced 01/25/1998
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Broadwing Communications
Introduced 09/05/2007
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 06/20/2012
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Cimco Communications
Introduced 11/13/2006
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 01/10/1996
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 06/13/2000
Landline
Chicago
Ameritech Illinois
Introduced 10/31/2000
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Mci Worldcom Communications
Introduced 01/11/1997
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 05/16/2002
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Landline
Chicago
Mcimetro Access Transmission Services LLC
Introduced 04/16/2013
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 03/03/2001
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
T-mobile Usa
Introduced 11/11/2003
Landline
Chicago
Mcimetro Access Transmission Services LLC
Introduced 11/06/2008
Landline
Chicago
Ameritech Illinois
Introduced 09/11/1994
Landline
Chicago
Teleport Communications America
Introduced 07/01/1996
Landline
Chicago
Neutral Tandem-illinois
Introduced 05/01/2012
Landline
Chicago
Mcimetro Access Transmission Services LLC
Introduced 04/01/1997
Landline
Chicago
Broadwing Communications
Introduced 05/10/1999
Landline
Chicago
Ameritech Illinois
Introduced 09/11/1994
Landline
Chicago
Xo Illinois
Introduced 01/25/1998
Landline
Chicago
Ovation Communications Of Illinois
Introduced 08/06/2012
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 08/06/2012
Landline
Chicago
Ameritech Illinois
Introduced 10/31/2000
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 10/19/2012
Wireless
Wheeling
New Cingular Wireless PCS
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 11/11/2003
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Chicago
T-mobile Usa
Introduced 09/11/2012
Landline
Chicago
Bandwidth.com Clec
Introduced 08/15/2012
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
New Cingular Wireless PCS
Introduced 02/14/2001
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Rcn Telecom Services Of Illinois
Introduced 05/10/1999
Landline
Chicago
Level 3 Communications
Introduced 05/01/2002
Landline
Chicago
Broadvox-clec
Introduced 02/04/2008
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Xo Illinois
Introduced 06/30/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Centurylink Communications LLC
Introduced 01/11/2013
Landline
Chicago
Ameritech Illinois
Introduced 07/22/1999
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Global Crossing Local Services-il
Introduced 11/11/2003
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Broadwing Communications
Introduced 05/10/1999
Landline
Chicago
Broadwing Communications
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Rcn Telecom Services Of Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Broadwing Communications
Introduced 03/27/2007
Wireless
Chicago
T-mobile Usa
Introduced 05/24/2013
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Rcn Telecom Services Of Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 07/04/1995
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 07/06/1997
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Teleport Communications America
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 08/20/2000
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Teleport Communications America
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Peerless Network Of Illinois
Introduced 08/31/2012
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
First Communications LLC
Introduced 04/01/1997
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Ameritech Illinois
Introduced 08/20/2000
Landline
Chicago
First Communications LLC
Introduced 06/16/2006
Wireless
Chicago
Usa Mobility Wireless
Introduced 10/15/1996
Wireless
Chicago
T-mobile Usa
Introduced 07/25/2013
Wireless
Chicago
American Messaging (am)
Introduced 04/23/2001
Wireless
Chicago
Usa Mobility Wireless
Introduced 01/10/1996
Landline
Chicago
Ameritech Illinois
Introduced 08/20/2000
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 10/13/1999
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Wireless
Chicago
American Messaging (am)
Introduced 04/13/2001
Unknown
Rclec
Introduced 05/06/2014
Wireless
Chicago
Indiana Paging Ntwk
Introduced 04/01/1997
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 10/31/2000
Landline
Chicago
Ameritech Illinois
Introduced 05/10/1999
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Broadwing Communications
Introduced 08/23/2001
Wireless
Hinsdale
New Cingular Wireless PCS
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Mcimetro Access Transmission Services LLC
Introduced 12/31/2012
Wireless
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Teleport Communications America
Introduced 02/04/1994
Landline
Chicago
Teleport Communications America
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
T-mobile Usa
Introduced 05/24/2013
Landline
Chicago
Ameritech Illinois
Introduced 07/04/1995
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
American Messaging (am)
Introduced 04/16/2001
Landline
Chicago
Ameritech Illinois
Introduced 10/31/2000
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
La Grange Park
Usa Mobility Wireless
Introduced 02/11/1995
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 11/11/2003
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Wireless
Chicago
T-mobile Usa
Introduced 10/22/2013
Landline
Chicago
Bandwidth.com Clec
Introduced 02/07/2013
Landline
Chicago
Bandwidth.com Clec
Introduced 10/08/2008
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 07/06/1997
Landline
Chicago
AT&T Local
Introduced 01/25/1998
Landline
Chicago
T-mobile Usa
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 07/06/2001
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Wireless
Chicago
American Messaging (am)
Introduced 04/13/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 11/15/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Usa Mobility Wireless
Introduced 11/11/2003
Wireless
Hinsdale
New Cingular Wireless PCS
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Broadwing Communications
Introduced 04/19/2002
Landline
Chicago
Rcn Telecom Services Of Illinois
Introduced 01/25/1998
Landline
Chicago
Tw Telecom Of Illinois LLC
Introduced 02/26/2013
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/27/1999
Landline
Chicago
Citrix Communications LLC
Introduced 03/28/2013
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
American Messaging (am)
Introduced 04/13/2001
Landline
Chicago
Ameritech Illinois
Introduced 01/14/2000
Unknown
Comcast Phone Of Illinois DBA Comco
Introduced 05/12/2014
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
AT&T Local
Introduced 01/25/1998
Wireless
Chicago
Indiana Paging Ntwk
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Wireless
Chicago
Cricket Communications
Introduced 08/18/2008
Wireless
Chicago
T-mobile Usa
Introduced 08/19/2013
Landline
Chicago
Ameritech Illinois
Introduced 10/13/1999
Landline
Chicago
Teleport Communications America
Introduced 01/25/1998
Landline
Chicago
Mci Worldcom Communications
Introduced 01/11/1997
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
First Communications LLC
Introduced 07/12/2007
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 10/31/2000
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Rcn Telecom Services Of Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 07/06/1997
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 10/31/2000
Landline
Chicago
Ameritech Illinois
Introduced 06/13/2000
Landline
Chicago
Peerless Network Of Illinois
Introduced 11/20/2012
Wireless
Chicago
365 Wireless
Introduced 04/29/2013
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Mci Worldcom Communications
Introduced 09/11/1994
Wireless
Chicago
T-mobile Usa
Introduced 01/23/2002
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Mcimetro Access Transmission Services LLC
Introduced 10/25/2013
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Wireless
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Hinsdale
New Cingular Wireless PCS
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 02/11/1995
Wireless
Chicago
T-mobile Usa
Introduced 08/19/2013
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Usa Mobility Wireless
Introduced 11/11/2003
Landline
Chicago
Mci Worldcom Communications
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 09/11/1994
Landline
Chicago
Ameritech Illinois
Introduced 09/11/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Usa Mobility Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 01/10/1996
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 10/31/2000
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Wireless
Chicago
American Messaging (am)
Introduced 04/13/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Teleport Communications America
Introduced 03/12/2014
Wireless
Hinsdale
New Cingular Wireless PCS
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Rcn Telecom Services Of Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 01/25/2006
Landline
Chicago
Ovation Communications Of Illinois
Introduced 04/10/2001
Landline
Chicago
Ameritech Illinois
Introduced 10/31/2000
Wireless
Wheeling
New Cingular Wireless PCS
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 01/10/1996
Landline
Chicago
Ameritech Illinois
Introduced 10/31/2000
Landline
Chicago
First Communications LLC
Introduced 07/06/1997
Landline
Chicago
Mci Worldcom Communications
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Landline
Chicago
Peerless Network Of Illinois
Introduced 02/04/2008
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 03/03/2001
Landline
Chicago
Ovation Communications Of Illinois
Introduced 04/10/2001
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Ovation Communications Of Illinois
Introduced 04/10/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 07/22/1999
Landline
Chicago
New Cingular Wireless PCS
Introduced 02/19/2009
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 03/03/2001
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Landline
Chicago
Broadwing Communications
Introduced 01/25/1998
Landline
Chicago
Broadwing Communications
Introduced 01/25/1998
Landline
Chicago
Mcimetro Access Transmission Services LLC
Introduced 01/25/1998
Landline
Chicago
Broadwing Communications
Introduced 07/06/1997
Landline
Chicago
Broadwing Communications
Introduced 11/20/1998
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
American Messaging (am)
Introduced 04/13/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Wireless
Chicago
Usa Mobility Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 09/11/1994
Landline
Chicago
Ameritech Illinois
Introduced 10/11/1997
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
American Messaging (am)
Introduced 04/23/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
T-mobile Usa
Introduced 08/19/2013
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 11/11/2003
Landline
Chicago
Ameritech Illinois
Introduced 07/21/2008
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Paetec Communications
Introduced 03/03/2001
Wireless
Chicago
New Cingular Wireless PCS
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 04/01/1997
Wireless
Chicago
T-mobile Usa
Introduced 08/21/2002
Landline
Chicago
Ameritech Illinois
Introduced 04/01/1997
Landline
Chicago
T-mobile Usa
Introduced 04/27/2006
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
Sprint Spectrum L.p.
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Wireless
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Peerless Network Of Illinois
Introduced 09/20/2013
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
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Chicago
Ameritech Illinois
Introduced 11/18/2010
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Chicago
Ovation Communications Of Illinois
Introduced 04/10/2001
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Chicago
Ameritech Illinois
Introduced 02/04/1994
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Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
New Cingular Wireless PCS
Introduced 10/15/1996
Wireless
Chicago
New Cingular Wireless PCS
Introduced 04/01/1997
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
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Chicago
Rcn Telecom Services Of Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 09/11/1994
Landline
Chicago
Ameritech Illinois
Introduced 07/06/1997
Wireless
Chicago
New Cingular Wireless PCS
Introduced 01/25/1998
Landline
Chicago
Global Crossing Local Services-il
Introduced 01/25/1998
Wireless
Chicago
Usa Mobility Wireless
Introduced 02/11/1995
Wireless
Chicago
Cellco Partnership DBA Verizon Wireless
Introduced 11/11/2003
Wireless
La Grange Park
Cellco Partnership DBA Verizon Wireless
Introduced 02/11/1995
Wireless
La Grange Park
Cellco Partnership DBA Verizon Wireless
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 03/03/2001
Unknown
Bandwidth.com Clec
Introduced 05/01/2014
Wireless
Chicago
New Cingular Wireless PCS
Introduced 11/11/2003
Landline
Chicago
Mcimetro Access Transmission Services LLC
Introduced 02/19/2014
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Chicago
T-mobile Usa
Introduced 10/22/2013
Wireless
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Teleport Communications America
Introduced 04/01/1997
Landline
Chicago
Ovation Communications Of Illinois
Introduced 04/10/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ovation Communications Of Illinois
Introduced 04/10/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Wireless
Hinsdale
New Cingular Wireless PCS
Introduced 02/11/1995
Wireless
Wheeling
New Cingular Wireless PCS
Introduced 02/11/1995
Landline
Chicago
Ameritech Illinois
Introduced 01/25/1998
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ovation Communications Of Illinois
Introduced 04/10/2001
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Ameritech Illinois
Introduced 02/04/1994
Landline
Chicago
Xo Illinois
Introduced 08/20/2010

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