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
301-291 A Washington Zone 14 MD   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 236      
301-291 0 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2018-10-23   
301-291 1 Washington Zone 14 MD   5562 METRO PCS, INC. 236   2016-11-10   
301-291 2 Washington Zone 14 MD   7421 AT&T LOCAL 236   2003-07-25   
301-291 3 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2018-10-23   
301-291 4 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2018-10-23   
301-291 5 Washington Zone 14 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-08-12   
301-291 6 Washington Zone 14 MD   5562 METRO PCS, INC. 236   2019-07-20   
301-291 7 Washington Zone 14 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2004-11-21   
301-291 8 Washington Zone 14 MD   5562 METRO PCS, INC. 236   2017-01-18   
301-291 9 Washington Zone 14 MD   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 236      

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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