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: 850 [Rate centres in NPA 850] [Dial plan for NPA 850]

NXX: 892

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
850-892 A DeFuniak Springs FL DFSPFLXADS0  0340 CENTURYLINK OF FLORIDA, INC. (CENTRAL) 44814      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.