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: 921

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-921 A Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-921 0 Washington Zone 10 MD   9212 VERIZON MARYLAND, INC. 236      
301-921 1 Washington Zone 10 MD   9212 VERIZON MARYLAND, INC. 236      
301-921 2 Washington Zone 10 MD   9212 VERIZON MARYLAND, INC. 236      
301-921 3 Washington Zone 10 MD   9212 VERIZON MARYLAND, INC. 236      
301-921 4 Washington Zone 10 MD   9212 VERIZON MARYLAND, INC. 236      
301-921 5 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-09-20   
301-921 6 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2014-11-24   
301-921 7 Washington Zone 10 MD   9212 VERIZON MARYLAND, INC. 236      
301-921 8 Washington Zone 10 MD   9212 VERIZON MARYLAND, INC. 236      
301-921 9 Washington Zone 10 MD   9212 VERIZON MARYLAND, INC. 236      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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