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: 640

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-640 A Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-640 0 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-05-20   
301-640 1 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-06-16   
301-640 2 Washington Zone 10 MD   9212 VERIZON MARYLAND, INC. 236      
301-640 3 Washington Zone 10 MD   9212 VERIZON MARYLAND, INC. 236      
301-640 4 Washington Zone 10 MD   9212 VERIZON MARYLAND, INC. 236      
301-640 5 Washington Zone 10 MD   876D ONVOY, LLC - MD 236   2012-09-06   
301-640 6 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-08-17   
301-640 7 Washington Zone 10 MD   9212 VERIZON MARYLAND, INC. 236      
301-640 8 Washington Zone 10 MD   5562 METRO PCS, INC. 236   2013-08-06   
301-640 9 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-05-20   

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

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