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: 449

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-449 A Preston MD SLBRMD901MD  939H COMMIO, LLC 242      
667-449 0 Preston MD SLBRMD901MD  939H COMMIO, LLC 242   2023-11-04   
667-449 1 Preston MD SLBRMD901MD  939H COMMIO, LLC 242   2023-11-04   
667-449 2 Preston MD SLBRMD901MD  939H COMMIO, LLC 242   2023-11-04   
667-449 3 Preston MD SLBRMD901MD  939H COMMIO, LLC 242   2023-11-04   
667-449 4 Preston MD SLBRMD901MD  939H COMMIO, LLC 242   2023-11-04   
667-449 9 Preston MD SLBRMD906MD  145J TERRA NOVA TELECOM INC. 242   2023-11-13   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.