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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-842 A Clear Spring MD CLSPMDCSRS0  9212 VERIZON MARYLAND, INC. 240      
301-842 0 Clear Spring MD   9212 VERIZON MARYLAND, INC. 240      
301-842 1 Clear Spring MD   9212 VERIZON MARYLAND, INC. 240      
301-842 2 Clear Spring MD   9212 VERIZON MARYLAND, INC. 240      
301-842 3 Clear Spring MD   9212 VERIZON MARYLAND, INC. 240      
301-842 4 Clear Spring MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2008-12-04   
301-842 5 Clear Spring MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 240   2009-12-31   
301-842 6 Clear Spring MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2010-03-25   
301-842 7 Clear Spring MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2011-01-02   
301-842 8 Clear Spring MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2012-06-01   
301-842 9 Clear Spring MD   073H TELNYX LLC 240   2017-08-08   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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