Local Calling Guide

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

NXX: 679

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-679 A Washington Zone 12 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-679 0 Washington Zone 12 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-05-20   
301-679 1 Washington Zone 12 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2008-10-05   
301-679 2 Washington Zone 12 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-12-31   
301-679 3 Washington Zone 12 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-04-29   
301-679 4 Washington Zone 12 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-679 5 Washington Zone 12 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-08-12   
301-679 6 Washington Zone 12 MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-03   
301-679 7 Washington Zone 12 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2012-10-07   
301-679 8 Washington Zone 12 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2013-08-14   
301-679 9 Washington Zone 12 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2013-06-16   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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