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.

Switch: LNNXSDXARS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
605-238 A Hurley SD 1652 CLARITY TELECOM, LLC DBA BLUEPEAK 640      
605-253 A Alsen SD 1652 CLARITY TELECOM, LLC DBA BLUEPEAK 640      
605-327 A Flyger SD 1652 CLARITY TELECOM, LLC DBA BLUEPEAK 640      
605-372 A Worthing SD 1652 CLARITY TELECOM, LLC DBA BLUEPEAK 640      
605-647 A Lennox SD 1652 CLARITY TELECOM, LLC DBA BLUEPEAK 640      
605-957 A Beresford Rural SD 1652 CLARITY TELECOM, LLC DBA BLUEPEAK 640      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.