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
301-388 A Washington Zone 12 MD SLSPMDCVDS0  9212 VERIZON MARYLAND, INC. 236      
301-388 0 Washington Zone 12 MD   9212 VERIZON MARYLAND, INC. 236      
301-388 1 Washington Zone 12 MD   9212 VERIZON MARYLAND, INC. 236      
301-388 2 Washington Zone 12 MD   9212 VERIZON MARYLAND, INC. 236      
301-388 3 Washington Zone 12 MD   9212 VERIZON MARYLAND, INC. 236      
301-388 4 Washington Zone 12 MD   9212 VERIZON MARYLAND, INC. 236      
301-388 5 Washington Zone 12 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2014-06-06   
301-388 6 Washington Zone 12 MD   5562 METRO PCS, INC. 236   2013-07-25   
301-388 7 Washington Zone 12 MD   2697 CTC COMMUNICATIONS CORP. - MD 236   2008-04-11   
301-388 8 Washington Zone 12 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-05-20   
301-388 9 Washington Zone 12 MD   9212 VERIZON MARYLAND, INC. 236      

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

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