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: 703

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-703 A Mount Airy MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
301-703 0 Mount Airy MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2014-05-05   
301-703 1 Mount Airy MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2015-09-17   
301-703 2 Mount Airy MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2006-05-20   
301-703 3 Mount Airy MD FRDRMDFRPMD  2589 US LEC OF MARYLAND, INC. 240   2009-11-16   
301-703 4 Mount Airy MD MTARMDMARS1  9212 VERIZON MARYLAND, INC. 240   2004-11-17   
301-703 5 Mount Airy MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2012-05-26   
301-703 6 Mount Airy MD FRDRMDFRXAX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 240   2013-06-10   
301-703 7 Mount Airy MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2021-11-08   
301-703 8 Mount Airy MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2007-04-07   
301-703 9 Mount Airy MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2005-02-17   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.