Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX: 914

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-914 A Oakland MD THVLMDTV0MD  676A MOUNTAIN COMMUNICATIONS, LLC DBA PROCOM - MD 240      
301-914 0 Oakland MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-10-22   
301-914 1 Oakland MD THVLMDTV0MD  676A MOUNTAIN COMMUNICATIONS, LLC DBA PROCOM - MD 240   2013-02-17   
301-914 2 Oakland MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-10-22   
301-914 3 Oakland MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-10-22   
301-914 4 Oakland MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-10-22   
301-914 5 Oakland MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-10-22   
301-914 6 Oakland MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-10-22   
301-914 7 Oakland MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-10-22   
301-914 8 Oakland MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-10-22   
301-914 9 Oakland MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-10-22   

Last updated: Fri, 10 Sep 2021 12:38:21 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.