Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Washington Zone 14, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
301-860 8   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-860 9 BTVLMD127MD  5562 METROPCS, INC. 236   2018-04-16   
301-867 A WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 0 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 1 OCQNVAXAVMD  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2020-08-10   
301-867 2 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 3   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-867 4   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-867 5 VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-03-14   
301-867 6 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 7 VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-03-14   
301-867 8 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 9 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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