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: 258

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-258 A Ridge MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-258 0 Ridge MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2004-03-26   
240-258 1 Ridge MD TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236   2004-02-05   
240-258 2 Ridge MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-03-05   
240-258 3 Ridge MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2022-01-27   
240-258 4 Ridge MD WASIDCRG7MD  508J CENTURYLINK COMMUNICATIONS, LLC 236   2014-06-12   
240-258 5 Ridge MD CHCHMDBEXCX  228C IDT AMERICA, CORP. - MD 236   2007-09-12   
240-258 6 Ridge MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2008-02-13   
240-258 7 Ridge MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-09-24   
240-258 8 Ridge MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2008-12-13   
240-258 9 Ridge MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      

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

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