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: 639 [Rate centres in NPA 639] [Dial plan for NPA 639]

NXX: 337

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
639-337 A Prudhomme SK PRDHSK020MD  6574 BELL CELLULAR, INC. 888 809102    

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.