Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Washington Zone 2, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
301-968 2 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 3 WASHDCSWXZZ  829J PAETEC ITEL, LLC 236   2009-06-24   
301-968 4 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 5 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-09-07   
301-968 6 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-10-17   
301-968 7 WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2010-09-01   
301-968 8 LARLMDCCAMD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236   2010-07-22   
301-968 9 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-986 A CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      

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Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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