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312 Area Code

State:Illinois
Major City:Chicago
Timezone:Central
Current Time:

History of area code 312

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. 312 was split in 1996 creating the need to update some of the phone numbers to area code 773. In 2009, area code 872 was created and is currently an overlay to 312 and 773.

Where is area code 312

Area code 312 serves part of Chicago, IL. It overlaps coverage areas with area code 872.

What time zone is area code 312?

The 312 area code is located in the Central timezone. The Central time zone is also known as America/Chicago

area code 312

312 area code map

Top 1 Counties in Area Code 312

CountyTotal Population% of 312% of County
Cook, IL5,194,675100%1%

Top 1 Cities in Area Code 312

CityTotal Population% of 312% of City
Chicago, IL2,695,598100%8%

Largest Landline Carriers in area code312

PrefixesCarrier
47%Ameritech
3%Broadwing
2%Mcimetro Access Transmission Services
1%Allegiance Telecom
1%Ovation
1%Teleport America
1%Rcn Telecom Services
10%Other

Largest Wireless Carriers in area code312

PrefixesCarrier
10%Cingular
7%Verizon Wireless
6%Usa Mobility Wireless
3%Sprint
3%American Messaging (am)
2%T-mobile
1%Ameritech
1%Other

Prefixes in area code312

PrefixUsagePrimary CityCarrierIntroduced
(312) 201-landlineChicago11/11/2003
(312) 202-landlineChicago04/01/1997
(312) 203-wirelessChicagoCingular Wireless11/11/2003
(312) 204-landlineChicago10/11/1997
(312) 205-landlineChicagoAllegiance Telecom08/20/2000
(312) 206-wirelessChicagoCingular Wireless11/11/2003
(312) 207-landlineChicago10/11/1997
(312) 208-wirelessChicagoCingular Wireless11/11/2003
(312) 209-wirelessNorthbrookVerizon Wireless02/11/1995
(312) 212-landlineChicago10/31/2000
(312) 213-wirelessChicagoCingular Wireless11/11/2003
(312) 214-landlineChicago11/11/2003
(312) 215-wirelessWheelingCingular Wireless02/11/1995
(312) 216-landlineChicagoFirst Comms02/13/2012
(312) 217-wirelessChicagoUnited States Cellular Corp.11/11/2003
(312) 218-wirelessChicagoCingular Wireless11/11/2003
(312) 219-wirelessChicagoBandwidth.com04/10/2012
(312) 220-landlineChicago02/04/1994
(312) 221-wirelessChicagoSprint06/17/2011
(312) 222-landlineChicago02/04/1994
(312) 223-landlineChicago10/11/1997
(312) 224-landlineChicagoBroadwing Comms10/13/1999
(312) 225-landlineChicago10/11/1997
(312) 226-landlineChicago10/11/1997
(312) 227-landlineChicago09/15/2010
(312) 228-landlineChicago10/11/1997
(312) 229-landlineChicago06/13/2000
(312) 230-landlineChicago10/11/1997
(312) 231-wirelessRoselleCingular Wireless01/10/1996
(312) 232-wirelessChicagoAmerican Messaging (am)04/23/2001
(312) 233-landlineChicago10/13/1999
(312) 234-landlineChicago01/25/1998
(312) 235-landlineChicago01/14/2000
(312) 236-landlineChicago11/11/2003
(312) 237-wirelessChicagoVerizon Wireless10/31/2000
(312) 238-landlineChicagoBroadwing Comms10/13/1999
(312) 239-landlineChicagoAT&T Local01/25/1998
(312) 240-landlineChicago10/11/1997
(312) 241-wirelessChicagoCingular Wireless08/17/2011
(312) 242-landlineChicagoTeleport Comms America08/20/2000
(312) 243-landlineChicago10/11/1997
(312) 244-landlineChicago10/31/2000
(312) 245-landlineChicago10/11/1997
(312) 246-wirelessWheelingCingular Wireless02/11/1995
(312) 247-landlineChicagoFirst Comms04/06/2004
(312) 248-wirelessMetro PCS07/01/2014
(312) 249-wirelessChicagoUSA Mobility Wireless02/04/1994
(312) 250-wirelessChicagoUSA Mobility Wireless02/04/1994
(312) 251-landlineChicago10/11/1997
(312) 252-landlineChicagoAllegiance Telecom01/25/1998
(312) 253-landlineChicagoAllegiance Telecom01/25/1998
(312) 254-landlineChicagoAllegiance Telecom01/25/1998
(312) 255-landlineChicago10/11/1997
(312) 256-landlineChicagoAllegiance Telecom01/25/1998
(312) 257-wirelessChicagoVerizon Wireless08/18/2011
(312) 258-landlineChicago10/11/1997
(312) 259-wirelessChicagoCingular Wireless11/11/2003
(312) 260-landlineChicagoMCI Metro ATS04/01/1997
(312) 261-landlineChicagoBroadwing Comms05/10/1999
(312) 262-landlineChicagoAllegiance Telecom01/25/1998
(312) 263-landlineChicago02/04/1994
(312) 264-landlineChicagoBroadwing Comms07/22/1999
(312) 265-landlineChicagoAccess One11/29/2005
(312) 266-landlineChicago02/04/1994
(312) 267-landlineChicago06/13/2000
(312) 268-landlineChicagoBroadwing Comms03/03/2001
(312) 269-landlineChicago02/04/1994
(312) 271-wirelessChicagoUSA Mobility Wireless01/25/1998
(312) 272-wirelessChicagoUSA Mobility Wireless07/01/1996
(312) 273-wirelessChicagoVerizon Wireless09/13/2011
(312) 274-landlineChicago01/25/1998
(312) 275-landlineChicagoAllegiance Telecom01/25/1998
(312) 276-landlineChicagoAllegiance Telecom01/25/1998
(312) 277-landlineChicagoAllegiance Telecom01/25/1998
(312) 278-landlineChicagoBroadwing Comms10/31/2000
(312) 279-landlineChicagoMCI Metro ATS01/25/1998
(312) 280-landlineChicago10/11/1997
(312) 281-landlineChicagoGlobal Crossing Local Services10/13/1999
(312) 282-wirelessChicagoCingular Wireless10/31/2000
(312) 283-landlineChicagoGlobal Crossing Local Services10/13/1999
(312) 284-landlineChicagoXo Illinois06/30/2001
(312) 285-wirelessChicagoSprint06/30/2001
(312) 286-wirelessChicagoCingular Wireless06/13/2000
(312) 287-wirelessChicagoSprint10/31/2000
(312) 288-landlineChicagoMCI Metro ATS01/25/1998
(312) 289-wirelessChicagoUSA Mobility Wireless02/04/1994
(312) 290-wirelessChicagoUSA Mobility Wireless11/11/2003
(312) 291-landlineChicago06/13/2000
(312) 292-wirelessChicagoBandwidth.com09/02/2011
(312) 293-landlineChicago02/04/1994
(312) 294-landlineChicago10/11/1997
(312) 295-wirelessLa Grange ParkUSA Mobility Wireless02/11/1995
(312) 296-wirelessChicagoSprint01/14/2000
(312) 297-landlineChicago02/11/1995
(312) 298-landlineChicagoSigecom07/22/1999
(312) 299-wirelessChicagoUSA Mobility Wireless02/04/1994
(312) 300-landlineChicagoNet Talk.com04/25/2011
(312) 301-wirelessHinsdaleCingular Wireless02/11/1995
(312) 302-landlineChicago02/04/1994
(312) 303-wirelessWheelingCingular Wireless02/11/1995
(312) 304-wirelessHinsdaleCingular Wireless02/11/1995
(312) 305-wirelessNorthbrookVerizon Wireless11/11/2003
(312) 306-landlineChicago02/04/1994
(312) 307-wirelessChicagoCingular Wireless11/11/2003
(312) 308-landlineChicago10/11/1997
(312) 309-landlineChicago11/11/2003
(312) 310-wirelessNorthbrookVerizon Wireless02/11/1995
(312) 314-wirelessHinsdaleCingular Wireless09/11/1994
(312) 315-wirelessChicagoCingular Wireless11/11/2003
(312) 316-wirelessChicagoCingular Wireless11/11/2003
(312) 317-wirelessWheelingCingular Wireless02/11/1995
(312) 318-wirelessLa Grange ParkVerizon Wireless02/11/1995
(312) 320-wirelessChicagoCingular Wireless11/11/2003
(312) 321-landlineChicago10/11/1997
(312) 322-landlineChicago10/11/1997
(312) 323-wirelessChicagoAmerican Messaging (am)04/13/2001
(312) 324-landlineChicagoLevel 3 Comms05/03/2001
(312) 325-landlineChicago06/24/2003
(312) 326-landlineChicago02/04/1994
(312) 327-landlineChicagoXo Illinois08/20/2000
(312) 328-landlineChicago10/11/1997
(312) 329-landlineChicago02/04/1994
(312) 330-wirelessChicagoCingular Wireless11/11/2003
(312) 331-wirelessWheelingCingular Wireless01/10/1996
(312) 332-landlineChicago02/04/1994
(312) 333-wirelessChicagoAmerican Messaging (am)04/13/2001
(312) 334-landlineChicagoFirst Comms10/31/2000
(312) 335-landlineChicago02/04/1994
(312) 336-landlineChicago11/11/2003
(312) 337-landlineChicago02/04/1994
(312) 338-landlineChicago04/01/1997
(312) 339-wirelessChicagoVerizon Wireless11/11/2003
(312) 340-wirelessChicagoVerizon Wireless09/21/2011
(312) 341-landlineChicago10/11/1997
(312) 342-wirelessChicagoCingular Wireless06/30/2001
(312) 343-wirelessChicagoVerizon Wireless11/11/2003
(312) 344-landlineChicago07/06/1997
(312) 345-landlineChicago11/11/2003
(312) 346-landlineChicago11/11/2003
(312) 347-landlineChicago02/04/1994
(312) 348-landlineChicagoNeutral Tandem11/14/2003
(312) 349-wirelessChicagoUSA Mobility Wireless02/04/1994
(312) 350-wirelessChicagoVerizon Wireless11/11/2003
(312) 351-wirelessChicagoCingular Wireless11/11/2003
(312) 352-wirelessHinsdaleCingular Wireless07/04/1995
(312) 353-landlineChicago02/04/1994
(312) 354-wirelessRoselleCingular Wireless01/10/1996
(312) 355-landlineChicago07/04/1995
(312) 356-landlineChicago01/14/2000
(312) 357-landlineChicago10/11/1997
(312) 359-wirelessChicagoUSA Mobility Wireless07/04/1995
(312) 360-landlineChicago02/04/1994
(312) 361-landlineChicago10/31/2000
(312) 362-landlineChicago10/11/1997
(312) 363-landlineChicagoRcn Telecom Services05/10/1999
(312) 364-landlineChicago09/11/1994
(312) 365-wirelessChicagoUSA Mobility Wireless11/11/2003
(312) 366-wirelessLa Grange ParkUSA Mobility Wireless01/10/1996
(312) 367-wirelessLa Grange ParkUSA Mobility Wireless11/11/2003
(312) 368-landlineChicago02/04/1994
(312) 369-wirelessChicagoCingular Wireless11/11/2003
(312) 370-wirelessChicagoUSA Mobility Wireless11/11/2003
(312) 371-wirelessChicagoSprint01/25/1998
(312) 372-landlineChicago11/11/2003
(312) 373-landlineChicagoBroadwing Comms05/10/1999
(312) 374-landlineChicago10/13/1999
(312) 375-wirelessChicagoT-mobile USA06/30/2001
(312) 376-landlineChicagoCbeyond Comms06/11/2004
(312) 377-landlineChicagoXo Illinois01/25/1998
(312) 378-wirelessChicagoUSA Mobility Wireless01/25/1998
(312) 379-landlineChicagoOvation Comms04/10/2001
(312) 380-landlineChicago08/20/2000
(312) 381-landlineChicago05/10/1999
(312) 382-landlineChicago02/04/1994
(312) 384-landlineChicago10/13/1999
(312) 385-landlineChicago01/25/1998
(312) 386-landlineChicago08/20/2000
(312) 387-wirelessChicagoUSA Mobility Wireless02/04/1994
(312) 388-wirelessChicagoSprint01/25/1998
(312) 389-wirelessChicagoUSA Mobility Wireless11/11/2003
(312) 390-wirelessChicagoAmerican Messaging (am)04/16/2001
(312) 391-wirelessChicagoCingular Wireless11/11/2003
(312) 393-wirelessChicagoAmerican Messaging (am)04/23/2001
(312) 394-landlineChicago02/04/1994
(312) 395-landlineChicagoAT&T Local01/25/1998
(312) 396-landlineChicago02/04/1994
(312) 397-landlineChicago10/11/1997
(312) 398-wirelessChicagoUSA Mobility Wireless01/10/1996
(312) 399-wirelessChicagoSprint07/22/1999
(312) 400-wirelessChicagoAmerican Messaging (am)04/13/2001
(312) 401-wirelessChicagoCingular Wireless11/11/2003
(312) 402-wirelessChicagoCingular Wireless11/11/2003
(312) 403-wirelessLa Grange ParkVerizon Wireless02/11/1995
(312) 404-wirelessChicagoT-mobile USA10/14/2002
(312) 405-wirelessChicagoVerizon Wireless11/11/2003
(312) 406-wirelessWheelingCingular Wireless02/11/1995
(312) 407-landlineChicago02/04/1994
(312) 408-landlineChicago10/11/1997
(312) 409-landlineChicago09/11/1994
(312) 410-landlineChicago02/04/1994
(312) 412-wirelessWheelingCingular Wireless02/11/1995
(312) 413-landlineChicago02/04/1994
(312) 415-wirelessChicagoVerizon Wireless11/11/2003
(312) 416-landlineChicagoMci Worldcom Comms01/10/1996
(312) 417-wirelessChicago02/04/1994
(312) 418-wirelessChicagoUSA Mobility Wireless09/11/1994
(312) 419-landlineChicago11/11/2003
(312) 420-wirelessChicagoCingular Wireless06/30/2001
(312) 421-landlineChicago02/04/1994
(312) 422-landlineChicago11/11/2003
(312) 423-landlineChicagoBroadwing Comms11/11/2003
(312) 424-landlineChicago09/11/1994
(312) 425-landlineChicago07/01/1996
(312) 426-wirelessChicagoUSA Mobility Wireless01/10/1996
(312) 427-landlineChicago02/04/1994
(312) 428-wirelessChicagoLevel 3 Comms11/11/2003
(312) 429-landlineChicagoGlobal Crossing Local Services10/13/1999
(312) 430-landlineChicago05/02/2004
(312) 431-landlineChicago10/11/1997
(312) 432-landlineChicago02/11/1995
(312) 433-landlineChicago02/04/1994
(312) 434-wirelessChicagoSprint07/08/2011
(312) 435-landlineChicago02/04/1994
(312) 436-landlineChicago01/14/2000
(312) 437-wirelessChicagoSprint07/22/1999
(312) 440-landlineChicago02/04/1994
(312) 441-landlineChicago02/04/1994
(312) 442-landlineChicago01/25/1998
(312) 443-landlineChicago11/11/2003
(312) 444-landlineChicago02/04/1994
(312) 445-landlineChicago06/13/2000
(312) 446-wirelessChicagoSprint08/14/1998
(312) 447-landlineChicago06/13/2000
(312) 448-wirelessChicagoVerizon Wireless08/02/2011
(312) 449-wirelessChicagoAmerican Messaging (am)04/23/2001
(312) 450-wirelessChicagoCingular Wireless11/11/2003
(312) 451-landlineChicagoT-mobile USA01/25/1998
(312) 452-wirelessChicagoAmerican Messaging (am)04/13/2001
(312) 453-landlineChicagoMci Worldcom Comms01/10/1996
(312) 454-landlineChicago02/04/1994
(312) 455-landlineChicago02/04/1994
(312) 456-landlineChicago02/04/1994
(312) 457-wirelessChicagoAmerican Messaging (am)04/23/2001
(312) 458-landlineChicago02/04/1994
(312) 459-wirelessChicagoT-mobile USA08/02/2011
(312) 460-landlineChicago11/11/2003
(312) 461-landlineChicago02/04/1994
(312) 462-landlineChicago10/11/1997
(312) 463-landlineChicago01/25/1998
(312) 464-landlineChicago02/04/1994
(312) 465-landlineChicagoUs Xchange Of Illinois DBA Choice One Comm Il03/26/2009
(312) 466-landlineChicago02/04/1994
(312) 467-landlineChicago02/04/1994
(312) 469-landlineChicago10/31/2000
(312) 470-landlineChicagoMCI Metro ATS01/10/1996
(312) 472-landlineChicago10/27/2005
(312) 473-landlineChicagoYmax Comms Corp.11/15/2006
(312) 474-landlineChicago02/04/1994
(312) 475-landlineChicago01/25/1998
(312) 476-landlineChicagoSprint08/20/2000
(312) 477-wirelessChicagoLevel 3 Comms10/20/2010
(312) 478-landlineChicagoT-mobile USA03/20/2014
(312) 479-landlineChicagoAT&T Local01/25/1998
(312) 480-wirelessChicagoCingular Wireless11/11/2003
(312) 482-landlineChicago02/04/1994
(312) 484-wirelessChicagoUSA Mobility Wireless02/04/1994
(312) 485-wirelessChicagoVerizon Wireless11/11/2003
(312) 486-landlineChicagoMci Worldcom Comms04/23/2004
(312) 488-landlineChicagoPg Telecom01/18/2006
(312) 489-wirelessChicagoVerizon Wireless08/20/2000
(312) 490-wirelessChicagoUSA Mobility Wireless02/04/1994
(312) 491-landlineChicago07/04/1995
(312) 492-landlineChicago07/06/1997
(312) 493-wirelessChicagoT-mobile USA06/30/2001
(312) 494-landlineChicago02/04/1994
(312) 495-wirelessChicagoUSA Mobility Wireless11/11/2003
(312) 496-landlineChicago07/01/1996
(312) 497-wirelessChicagoVerizon Wireless11/11/2003
(312) 498-wirelessChicagoSprint07/22/1999
(312) 499-landlineChicago02/04/1994
(312) 501-wirelessLa Grange ParkVerizon Wireless02/11/1995
(312) 502-wirelessChicagoVerizon Wireless11/11/2003
(312) 503-landlineChicagoBroadwing Comms02/04/1994
(312) 504-wirelessChicagoCingular Wireless11/11/2003
(312) 505-wirelessChicagoVerizon Wireless11/11/2003
(312) 506-landlineChicagoCimco Comms05/24/2004
(312) 507-landlineChicago02/04/1994
(312) 508-landlineChicagoPeerless Network03/19/2012
(312) 509-landlineChicagoPeerless Network03/06/2012
(312) 510-wirelessHinsdaleCingular Wireless02/11/1995
(312) 512-wirelessChicagoUSA Mobility Wireless05/01/2002
(312) 513-wirelessChicagoCingular Wireless11/11/2003
(312) 514-wirelessChicagoAmerican Messaging (am)04/13/2001
(312) 515-wirelessChicagoVerizon Wireless11/11/2003
(312) 516-landlineChicago02/11/1995
(312) 518-wirelessWheelingCingular Wireless02/11/1995
(312) 519-wirelessChicagoVerizon Wireless11/11/2003
(312) 520-wirelessChicagoVerizon Wireless11/11/2003
(312) 521-landlineChicagoAT&T Local01/25/1998
(312) 523-wirelessChicagoSprint06/30/2001
(312) 524-wirelessWheelingCingular Wireless02/11/1995
(312) 525-landlineChicagoMCI Metro ATS03/20/2002
(312) 526-landlineChicago07/04/1995
(312) 527-landlineChicago02/04/1994
(312) 528-landlineChicago01/25/1998
(312) 529-landlineChicagoAT&T Local10/11/1997
(312) 530-wirelessChicagoUSA Mobility Wireless04/15/1996
(312) 531-wirelessHinsdaleCingular Wireless02/11/1995
(312) 532-wirelessChicagoT-mobile USA11/11/2003
(312) 533-wirelessChicagoVerizon Wireless10/13/1999
(312) 534-landlineChicago09/17/2008
(312) 537-landlineChicago04/15/1996
(312) 540-landlineChicago02/04/1994
(312) 541-landlineChicago11/11/2003
(312) 542-landlineChicago01/25/1998
(312) 543-wirelessChicagoCingular Wireless04/01/1997
(312) 544-landlineChicago06/13/2000
(312) 545-wirelessChicagoSprint03/03/2001
(312) 546-landlineChicagoLevel 3 Comms01/25/1998
(312) 547-wirelessChicagoCingular Wireless11/11/2003
(312) 548-landlineChicagoBroadwing Comms09/05/2007
(312) 550-wirelessChicagoVerizon Wireless11/11/2003
(312) 551-landlineChicago02/04/1994
(312) 552-landlineChicago02/04/1994
(312) 553-landlineChicago02/04/1994
(312) 554-landlineChicago02/04/1994
(312) 556-wirelessChicago11/11/2003
(312) 557-landlineChicago11/11/2003
(312) 558-landlineChicago02/04/1994
(312) 559-landlineChicago02/04/1994
(312) 560-wirelessChicagoCingular Wireless11/11/2003
(312) 561-wirelessChicagoVerizon Wireless06/20/2012
(312) 562-wirelessChicagoUSA Mobility Wireless02/04/1994
(312) 563-landlineChicago02/04/1994
(312) 564-landlineChicagoCimco Comms11/13/2006
(312) 565-landlineChicago02/04/1994
(312) 566-landlineChicago01/10/1996
(312) 567-landlineChicago02/04/1994
(312) 568-landlineChicago06/13/2000
(312) 569-landlineChicago10/31/2000
(312) 570-landlineChicago02/04/1994
(312) 571-wirelessChicagoUSA Mobility Wireless02/04/1994
(312) 572-landlineChicago02/04/1994
(312) 573-landlineChicago02/04/1994
(312) 574-landlineChicago02/04/1994
(312) 575-landlineChicago02/04/1994
(312) 576-wirelessChicagoCingular Wireless11/11/2003
(312) 577-landlineChicagoMci Worldcom Comms01/11/1997
(312) 578-landlineChicago11/11/2003
(312) 580-landlineChicago02/04/1994
(312) 582-landlineChicago05/16/2002
(312) 583-landlineChicago01/25/1998
(312) 585-landlineChicagoMCI Metro ATS04/16/2013
(312) 587-landlineChicago02/04/1994
(312) 588-landlineChicago01/25/1998
(312) 589-landlineChicago03/03/2001
(312) 590-wirelessChicagoVerizon Wireless11/11/2003
(312) 591-landlineChicago11/11/2003
(312) 592-landlineChicago02/04/1994
(312) 593-wirelessChicagoT-mobile USA11/11/2003
(312) 594-landlineChicagoMCI Metro ATS11/06/2008
(312) 595-landlineChicago09/11/1994
(312) 596-landlineChicagoTeleport Comms America07/01/1996
(312) 600-landlineChicagoNeutral Tandem05/01/2012
(312) 601-landlineChicagoMCI Metro ATS04/01/1997
(312) 602-landlineChicagoBroadwing Comms05/10/1999
(312) 603-landlineChicago09/11/1994
(312) 604-landlineChicagoXo Illinois01/25/1998
(312) 605-landlineChicagoOvation Comms08/06/2012
(312) 606-landlineChicago02/04/1994
(312) 607-wirelessChicagoCingular Wireless11/11/2003
(312) 608-wirelessChicagoCingular Wireless11/11/2003
(312) 609-landlineChicago02/04/1994
(312) 610-wirelessChicagoVerizon Wireless08/06/2012
(312) 612-landlineChicago10/31/2000
(312) 613-wirelessChicagoCingular Wireless11/11/2003
(312) 614-landlineChicago10/19/2012
(312) 615-wirelessWheelingCingular Wireless02/11/1995
(312) 616-landlineChicago02/04/1994
(312) 617-wirelessChicagoSprint11/11/2003
(312) 618-wirelessChicagoCingular Wireless11/11/2003
(312) 619-wirelessChicagoT-mobile USA09/11/2012
(312) 620-landlineChicagoBandwidth.com08/15/2012
(312) 621-landlineChicago02/04/1994
(312) 622-wirelessChicagoCingular Wireless02/14/2001
(312) 623-wirelessChicagoCingular Wireless11/11/2003
(312) 624-landlineChicagoRcn Telecom Services05/10/1999
(312) 625-landlineChicagoLevel 3 Comms05/01/2002
(312) 626-landlineChicagoBroadvox-clec02/04/2008
(312) 627-landlineChicago02/04/1994
(312) 628-landlineChicagoXo Illinois06/30/2001
(312) 629-landlineChicago02/04/1994
(312) 630-landlineChicago02/04/1994
(312) 631-landlineChicagoCenturylink Comms01/11/2013
(312) 632-landlineChicago07/22/1999
(312) 633-landlineChicago02/04/1994
(312) 634-landlineChicago02/04/1994
(312) 635-landlineChicagoGlobal Crossing Local Services11/11/2003
(312) 636-wirelessChicagoVerizon Wireless11/11/2003
(312) 637-landlineChicagoBroadwing Comms05/10/1999
(312) 638-landlineChicagoBroadwing Comms01/25/1998
(312) 640-landlineChicago02/04/1994
(312) 641-landlineChicago02/04/1994
(312) 642-landlineChicago02/04/1994
(312) 643-landlineChicagoRcn Telecom Services01/25/1998
(312) 644-landlineChicago10/11/1997
(312) 645-landlineChicago10/11/1997
(312) 646-landlineChicagoBroadwing Comms03/27/2007
(312) 647-wirelessChicagoT-mobile USA05/24/2013
(312) 648-landlineChicago02/04/1994
(312) 649-landlineChicago02/04/1994
(312) 650-landlineChicagoRcn Telecom Services01/25/1998
(312) 651-landlineChicago01/25/1998
(312) 652-landlineChicago11/11/2003
(312) 653-landlineChicago07/04/1995
(312) 654-landlineChicago02/04/1994
(312) 655-landlineChicago02/04/1994
(312) 656-wirelessChicagoSprint07/06/1997
(312) 657-wirelessChicagoUSA Mobility Wireless02/04/1994
(312) 658-landlineChicago11/11/2003
(312) 659-wirelessChicagoCingular Wireless11/11/2003
(312) 660-landlineChicagoTeleport Comms America01/25/1998
(312) 661-landlineChicago02/04/1994
(312) 662-landlineChicago08/20/2000
(312) 663-landlineChicago02/04/1994
(312) 664-landlineChicago02/04/1994
(312) 665-landlineChicagoTeleport Comms America01/25/1998
(312) 666-landlineChicago02/04/1994
(312) 667-landlineChicagoPeerless Network08/31/2012
(312) 669-landlineChicago02/04/1994
(312) 670-landlineChicago02/04/1994
(312) 671-wirelessChicagoSprint11/11/2003
(312) 672-landlineChicago10/11/1997
(312) 673-landlineChicagoFirst Comms04/01/1997
(312) 674-landlineChicago10/11/1997
(312) 675-landlineChicago08/20/2000
(312) 676-landlineChicagoFirst Comms06/16/2006
(312) 677-wirelessChicagoUSA Mobility Wireless10/15/1996
(312) 678-wirelessChicagoT-mobile USA07/25/2013
(312) 679-wirelessChicagoAmerican Messaging (am)04/23/2001
(312) 680-wirelessChicagoUSA Mobility Wireless01/10/1996
(312) 681-landlineChicago08/20/2000
(312) 682-wirelessChicagoUSA Mobility Wireless02/04/1994
(312) 683-landlineChicago11/11/2003
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