Local Calling Guide

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

NXX: 571

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-571 A Westport CT NWHNCT02X5X  7421 AT&T - LOCAL 920      
203-571 0 Westport CT SMFRCTQI9MD  3493 GLOBAL CROSSING LOCAL SERVICES, INC. - CT 920   2001-05-07   
203-571 1 Westport CT NWHNCT030MD  3722 CONVERSENT COMMUNICATIONS OF CONNECTICUT, LLC - CT 920   2001-05-17   
203-571 2 Westport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2016-01-19   
203-571 3 Westport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-05-02   
203-571 4 Westport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-05-02   
203-571 5 Westport CT NWHNCT02X5X  7421 AT&T - LOCAL 920      
203-571 6 Westport CT NWHNCT030MD  3722 CONVERSENT COMMUNICATIONS OF CONNECTICUT, LLC - CT 920   2006-05-25   
203-571 7 Westport CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2005-11-28   
203-571 8 Westport CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2002-12-11   
203-571 9 Westport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2016-01-19   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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