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: 375

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-375 A Indian Head MD BRRDMDBRRS0  9212 VERIZON MARYLAND, INC. 236      
301-375 0 Indian Head MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2008-12-13   
301-375 1 Indian Head MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2004-03-26   
301-375 2 Indian Head MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2007-10-22   
301-375 3 Indian Head MD   829J PAETEC ITEL, LLC 236   2010-01-18   
301-375 4 Indian Head MD   829J PAETEC ITEL, LLC 236   2005-10-07   
301-375 5 Indian Head MD WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2009-09-25   
301-375 6 Indian Head MD BRRDMDBRRS0  9212 VERIZON MARYLAND, INC. 236      
301-375 7 Indian Head MD BRRDMDBRRS0  9212 VERIZON MARYLAND, INC. 236      
301-375 8 Indian Head MD BRRDMDBRRS0  9212 VERIZON MARYLAND, INC. 236      
301-375 9 Indian Head MD BRRDMDBRRS0  9212 VERIZON MARYLAND, INC. 236      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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