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: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-501 A Pikesville MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-501 0 Pikesville MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-501 1 Pikesville MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-501 2 Pikesville MD   876D ONVOY, LLC - MD 238   2012-10-08   
443-501 3 Pikesville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2007-07-12   
443-501 4 Pikesville MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-501 6 Pikesville MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2014-03-22   
443-501 7 Pikesville MD   7575 CENTURYLINK COMMUNICATIONS LLC 238   2014-04-02   
443-501 8 Pikesville MD   551G BRIGHTLINK COMMUNICATIONS, LLC 238   2016-04-01   
443-501 9 Pikesville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-10-12   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.