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: 780

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-780 A Gaithersburg MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-780 0 Gaithersburg MD   515J IP HORIZON LLC 236   2013-09-07   
240-780 1 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-14   
240-780 2 Gaithersburg MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-11-29   
240-780 3 Gaithersburg MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-780 4 Gaithersburg MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-780 5 Gaithersburg MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-07-12   
240-780 6 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-14   
240-780 7 Gaithersburg MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2012-10-07   
240-780 8 Gaithersburg MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-10-19   
240-780 9 Gaithersburg MD SLSPMD913MD  939H COMMIO, LLC 236   2021-07-12   

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

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