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: 343

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-343 A Cambridge MD ESTNMDES5MD  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
667-343 0 Cambridge MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
667-343 1 Cambridge MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
667-343 2 Cambridge MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
667-343 3 Cambridge MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
667-343 4 Cambridge MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
667-343 5 Cambridge MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
667-343 6 Cambridge MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
667-343 7 Cambridge MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
667-343 8 Cambridge MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
667-343 9 Cambridge MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.