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: 823

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-823 A Washington Zone 13 MD WASHDCDTDS1  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-823 0 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-823 1 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-823 2 Washington Zone 13 MD   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-10-10   
301-823 3 Washington Zone 13 MD   2697 CTC COMMUNICATIONS CORP. - MD 236   2012-11-21   
301-823 4 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-823 5 Washington Zone 13 MD   197D VONAGE AMERICA LLC 236   2020-05-20   
301-823 6 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-823 7 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-823 8 Washington Zone 13 MD   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 236   2004-04-06   
301-823 9 Washington Zone 13 MD   624H ONVOY SPECTRUM, LLC 236   2021-11-08   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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