Local Calling Guide

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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
301-372 A Washington Zone 16 MD BRNDMDBERS0  9212 VERIZON MARYLAND, INC. 236      
301-372 0 Washington Zone 16 MD   9212 VERIZON MARYLAND, INC. 236      
301-372 1 Washington Zone 16 MD   9212 VERIZON MARYLAND, INC. 236      
301-372 2 Washington Zone 16 MD   9212 VERIZON MARYLAND, INC. 236      
301-372 3 Washington Zone 16 MD   9212 VERIZON MARYLAND, INC. 236      
301-372 4 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2019-03-29   
301-372 5 Washington Zone 16 MD   2697 CTC COMMUNICATIONS CORP. - MD 236   2016-06-17   
301-372 6 Washington Zone 16 MD   9212 VERIZON MARYLAND, INC. 236      
301-372 7 Washington Zone 16 MD   7575 CENTURYLINK COMMUNICATIONS LLC 236   2014-06-25   
301-372 8 Washington Zone 16 MD   9212 VERIZON MARYLAND, INC. 236      

Last updated: Fri, 17 May 2019 00:49:52 UTC

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