Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX: 278

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-278 A Washington Zone 5 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-278 0 Washington Zone 5 MD LARLMDLR3MD  2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 236      
301-278 1 Washington Zone 5 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-278 2 Washington Zone 5 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-278 3 Washington Zone 5 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
301-278 4 Washington Zone 5 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236      
301-278 5 Washington Zone 5 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
301-278 6 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-278 7 Washington Zone 5 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
301-278 8 Washington Zone 5 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
301-278 9 Washington Zone 5 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      

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

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