Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Washington Zone 5, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
301-909 7 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-909 8 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
301-909 9 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-925 A LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-967 A STLDMDSLDS0  9212 VERIZON MARYLAND, INC. 236      
301-981 A LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      

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Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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