Local Calling Guide

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NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX: 978

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-978 A Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-978 0 Washington Zone 10 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2004-03-26   
301-978 1 Washington Zone 10 MD BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-06-04   
301-978 2 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-978 3 Washington Zone 10 MD CHCHMDBE6MD  4716 PAETEC COMMUNICATIONS, INC. - MD 236   2013-01-25   
301-978 4 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-978 5 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-978 6 Washington Zone 10 MD BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-10-12   
301-978 7 Washington Zone 10 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2014-09-18   
301-978 8 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-978 9 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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