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: 678

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-678 A Hancock MD HNCCMDHNRS0  9212 VERIZON MARYLAND, INC. 240      
301-678 1 Hancock MD   876D ONVOY, LLC - MD 240   2016-09-12   
301-678 2 Hancock MD   9212 VERIZON MARYLAND, INC. 240      
301-678 3 Hancock MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2008-12-04   
301-678 4 Hancock MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2007-06-04   
301-678 5 Hancock MD   9212 VERIZON MARYLAND, INC. 240      
301-678 6 Hancock MD   9212 VERIZON MARYLAND, INC. 240      
301-678 7 Hancock MD   9212 VERIZON MARYLAND, INC. 240      
301-678 8 Hancock MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2010-03-25   
301-678 9 Hancock MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2011-01-02   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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