Local Calling Guide

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NPA: 203 [Rate centres in NPA 203] [Dial plan for NPA 203]

NXX: 437

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-437 A Waterbury CT HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920      
203-437 0 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2003-10-11   
203-437 1 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2003-10-11   
203-437 2 Waterbury CT MDTWCTNIGT1  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2003-12-06   
203-437 3 Waterbury CT HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920      
203-437 4 Waterbury CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2003-03-02   
203-437 5 Waterbury CT MDTWCTNIGT1  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2004-02-15   
203-437 6 Waterbury CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-02-19   
203-437 7 Waterbury CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2004-10-27   
203-437 8 Waterbury CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920   2009-08-31   
203-437 9 Waterbury CT HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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