Phone Number Prefixes in the 203 Area Code - Page 11

PrefixUsagePrimary CityCarrierIntroduced
(203) 505   WirelessNorwalkVerizon Wireless02/27/1999
(203) 506   WirelessNew HavenCingular Wireless01/25/1998
(203) 507   WirelessNew HavenSprint06/30/2001
(203) 508   WirelessNew HavenCtc Comms Corp.02/03/2005
(203) 509   WirelessWaterburySprint01/25/1998
(203) 510   WirelessWaterburySprint07/22/1999
(203) 512   WirelessDanburyOmnipoint Comms01/25/1998
(203) 513   WirelessNew HavenAT&T Local04/01/1997
(203) 514   WirelessMeridenTeleport Comms America01/10/1996
(203) 515   WirelessNorwalkSprint02/27/1999
(203) 516   WirelessDerbyGlobal Crossing Local Services03/03/2001
(203) 517   WirelessStamfordLevel 3 Comms10/13/1999
(203) 518   WirelessWaterburyCingular Wireless07/02/2001
(203) 519   WirelessWaterburySprint02/09/2011
(203) 520   WirelessBridgeportVerizon Wireless05/30/2002
(203) 521   WirelessBridgeportVerizon Wireless04/01/1997
(203) 522   WirelessBridgeportCingular Wireless01/25/1998
(203) 523   WirelessNorwalkTeleport Comms America04/01/1997
(203) 524   WirelessStamfordCingular Wireless01/25/1998
(203) 525   WirelessWaterburyCingular Wireless01/25/1998
(203) 526   WirelessBridgeportSprint10/13/1999
(203) 527   WirelessWaterburySouthern New England Telco01/25/1998
(203) 528   WirelessWaterburyLevel 3 Comms10/13/1999
(203) 529   WirelessWiltonAT&T Local04/01/1997
(203) 530   WirelessNew HavenVerizon Wireless02/04/1994
(203) 531   WirelessGreenwichVerizon New York01/10/1996
(203) 532   WirelessGreenwichVerizon New York01/10/1996
(203) 533   WirelessGuilfordLevel 3 Comms01/25/1998
(203) 534   WirelessBridgeportSouthern New England Telco09/11/1994
(203) 535   WirelessNew HavenComcast Phone04/01/1997
(203) 536   WirelessStamfordVerizon Wireless01/25/1998
(203) 537   WirelessMeridenSprint01/25/1998
(203) 538   WirelessHuntingtonChoice One Comms08/20/2000
(203) 539   WirelessStamfordSouthern New England Telco06/13/2000
(203) 540   WirelessBridgeportCingular Wireless01/31/2005
(203) 541   WirelessStamfordSouthern New England Telco10/13/1999
(203) 542   WirelessGreenwichAT&T Local04/01/1997
(203) 543   WirelessBridgeportOmnipoint Comms08/20/2000
(203) 544   WirelessReddingSouthern New England Telco02/04/1994
(203) 545   WirelessBridgeportSprint08/20/2000
(203) 546   WirelessDanburyTeleport Comms America04/01/1997
(203) 547   WirelessStamfordGlobal Naps07/22/1999
(203) 548   WirelessStamfordBroadwing Comms05/30/2002
(203) 549   WirelessBridgeportChoice One Comms08/20/2000
(203) 550   WirelessStamfordOmnipoint Comms01/25/1998
(203) 551   WirelessBridgeportTeleport Comms America10/11/1997
(203) 552   WirelessGreenwichVerizon New York01/10/1996
(203) 553   WirelessNew HavenSouthern New England Telco02/04/1994
(203) 554   WirelessStamfordCingular Wireless02/11/1995
(203) 556   WirelessBridgeportCingular Wireless02/04/1994