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
301-867 A Washington Zone 14 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 0 Washington Zone 14 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 2 Washington Zone 14 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 3 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2019-04-29   
301-867 4 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2019-04-29   
301-867 5 Washington Zone 14 MD   876D ONVOY, LLC - MD 236   2016-03-14   
301-867 6 Washington Zone 14 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 7 Washington Zone 14 MD   876D ONVOY, LLC - MD 236   2016-03-14   
301-867 8 Washington Zone 14 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 9 Washington Zone 14 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      

Last updated: Wed, 01 Apr 2020 02:09:16 UTC

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