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
301-470 A Washington Zone 14 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-470 0 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2018-10-23   
301-470 1 Washington Zone 14 MD   9212 VERIZON MARYLAND, INC. 236      
301-470 2 Washington Zone 14 MD   9212 VERIZON MARYLAND, INC. 236      
301-470 3 Washington Zone 14 MD   9212 VERIZON MARYLAND, INC. 236      
301-470 4 Washington Zone 14 MD   9212 VERIZON MARYLAND, INC. 236      
301-470 5 Washington Zone 14 MD   9212 VERIZON MARYLAND, INC. 236      
301-470 6 Washington Zone 14 MD   9212 VERIZON MARYLAND, INC. 236      
301-470 7 Washington Zone 14 MD   9212 VERIZON MARYLAND, INC. 236      
301-470 8 Washington Zone 14 MD   9212 VERIZON MARYLAND, INC. 236      
301-470 9 Washington Zone 14 MD   9212 VERIZON MARYLAND, INC. 236      

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

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