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: 478

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-478 A Flintstone MD FLNTMDFSRS0  9212 VERIZON MARYLAND, INC. 240      
301-478 0 Flintstone MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2004-03-26   
301-478 1 Flintstone MD CMLDMDCH0MD  228C IDT AMERICA, CORP. - MD 240   2006-03-10   
301-478 2 Flintstone MD FLNTMDFSRS0  9212 VERIZON MARYLAND, INC. 240      
301-478 3 Flintstone MD FLNTMDFSRS0  9212 VERIZON MARYLAND, INC. 240      
301-478 4 Flintstone MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2012-08-24   
301-478 5 Flintstone MD OLTWMDOTRS0  9212 VERIZON MARYLAND, INC. 240      
301-478 6 Flintstone MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-03-01   
301-478 7 Flintstone MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-11-07   
301-478 8 Flintstone MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-09-12   
301-478 9 Flintstone MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-09-12   

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

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