Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 339

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-339 A Washington Zone 15 MD WASHDC12OMD  4820 CAVALIER EAST, LLC - MD 236      
240-339 0 Washington Zone 15 MD WASHDC12OMD  4820 CAVALIER EAST, LLC - MD 236      
240-339 1 Washington Zone 15 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2006-03-14   
240-339 2 Washington Zone 15 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2008-10-05   
240-339 3 Washington Zone 15 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2008-12-13   
240-339 4 Washington Zone 15 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-06-26   
240-339 5 Washington Zone 15 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-05-20   
240-339 6 Washington Zone 15 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2012-10-07   
240-339 7 Washington Zone 15 MD WASIDCRG7MD  508J CENTURYLINK COMMUNICATIONS, LLC 236   2014-06-12   
240-339 8 Washington Zone 15 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2015-07-23   
240-339 9 Washington Zone 15 MD WASHDC12OMD  4820 CAVALIER EAST, LLC - MD 236      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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