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: 666

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-666 A Washington Zone 14 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-666 0 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
301-666 1 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
301-666 2 Washington Zone 14 MD VINNVACBDS0  876D ONVOY, LLC - MD 236      
301-666 3 Washington Zone 14 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-666 4 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
301-666 5 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
301-666 6 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
301-666 7 Washington Zone 14 MD WASIDCRG7MD  508J CENTURYLINK COMMUNICATIONS, LLC 236      
301-666 8 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
301-666 9 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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