Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-833 A Washington Zone 14 MD WASHDCDTDS1  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-833 0 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2004-03-26   
301-833 1 Washington Zone 14 MD   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-07-17   
301-833 2 Washington Zone 14 MD   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-07-17   
301-833 3 Washington Zone 14 MD   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-07-17   
301-833 4 Washington Zone 14 MD   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-07-17   
301-833 5 Washington Zone 14 MD   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2003-06-29   
301-833 6 Washington Zone 14 MD   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2003-06-29   
301-833 7 Washington Zone 14 MD   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2003-06-29   
301-833 8 Washington Zone 14 MD   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2003-06-29   
301-833 9 Washington Zone 14 MD   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2003-06-29   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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