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: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

NXX: 899

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-899 A Baltimore MD BLTQMD01AMD  965H FRACTEL, LLC 238      
667-899 0 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2022-02-24   
667-899 1 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2022-02-24   
667-899 2 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2022-02-24   
667-899 3 Baltimore MD   876D ONVOY, LLC - MD 238   2022-05-15   
667-899 4 Baltimore MD   876D ONVOY, LLC - MD 238   2022-05-22   
667-899 5 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-11-08   
667-899 6 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-11-08   
667-899 7 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2022-02-24   
667-899 8 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2022-02-24   
667-899 9 Baltimore MD   965H FRACTEL, LLC 238   2021-12-26   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.