Local Calling Guide

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

NXX: 547

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-547 A Washington Zone 2 MD WASHDCDTDS1  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-547 0 Washington Zone 2 MD WASHDCDTDS1  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-547 1 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2008-03-11   
301-547 2 Washington Zone 2 MD WASHDCDTDS1  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-547 3 Washington Zone 2 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-06-04   
301-547 4 Washington Zone 2 MD WASHDCDTDS1  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-547 5 Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-01-11   
301-547 6 Washington Zone 2 MD CHCHMDBEX4X  551G NUSO, LLC 236   2016-08-31   
301-547 7 Washington Zone 2 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-12-03   
301-547 8 Washington Zone 2 MD WASHDCCZDS1  4773 XO MARYLAND, LLC 236   2014-02-21   
301-547 9 Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-02-08   

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

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