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
443-698 A Odenton MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-698 0 Odenton MD   964H BARR TELL USA, INC. 238   2016-12-17   
443-698 1 Odenton MD   4716 PAETEC COMMUNICATIONS, INC. - MD 238   2005-11-11   
443-698 2 Odenton MD   5562 METRO PCS, INC. 238   2013-06-14   
443-698 3 Odenton MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2016-08-25   
443-698 4 Odenton MD   5562 METRO PCS, INC. 238   2019-12-28   
443-698 5 Odenton MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-698 6 Odenton MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-698 7 Odenton MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-698 8 Odenton MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-06-02   
443-698 9 Odenton MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.