Local Calling Guide

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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 477

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-477 A Gaithersburg MD HRNDVACKBMD  5966 LIGHTWAVE COMMUNICATIONS, LLC - MD 236      
240-477 0 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2008-06-09   
240-477 1 Gaithersburg MD HRNDVACKBMD  5966 LIGHTWAVE COMMUNICATIONS, LLC - MD 236   2005-06-19   
240-477 2 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2006-04-07   
240-477 3 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2006-04-07   
240-477 4 Gaithersburg MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2006-05-29   
240-477 5 Gaithersburg MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2006-05-29   
240-477 6 Gaithersburg MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2006-08-02   
240-477 7 Gaithersburg MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2006-08-02   
240-477 8 Gaithersburg MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2006-08-02   
240-477 9 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2008-06-09   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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