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: 234

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-234 A Washington Zone 16 MD ALTWMDATRP0  9212 VERIZON MARYLAND, INC. 236      
301-234 0 Washington Zone 16 MD ALTWMDATRP0  9212 VERIZON MARYLAND, INC. 236      
301-234 1 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
301-234 2 Washington Zone 16 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236      
301-234 3 Washington Zone 16 MD HRNDVACKBMD  5978 BROADVIEW NETWORKS OF VIRGINIA, INC. - VA 236      
301-234 4 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
301-234 5 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
301-234 6 Washington Zone 16 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-234 7 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236      
301-234 8 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236      
301-234 9 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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