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: 288

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-288 A Washington Zone 12 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-288 0 Washington Zone 12 MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2004-03-26   
301-288 1 Washington Zone 12 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-02-22   
301-288 2 Washington Zone 12 MD   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236   2006-05-28   
301-288 3 Washington Zone 12 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-06-26   
301-288 4 Washington Zone 12 MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2013-10-04   
301-288 5 Washington Zone 12 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-04-23   
301-288 7 Washington Zone 12 MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2006-10-09   
301-288 8 Washington Zone 12 MD   5977 BROADVIEW NETWORKS, INC. - DC 236   2011-04-28   
301-288 9 Washington Zone 12 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      

Last updated: Sat, 31 Oct 2020 19:28:10 UTC

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