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: CORFNYXADS2

Remotes:

Switch Switch name Switch type
DARNNYXARS2  DARIEN  1RE 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
585-599 A Corfu NY 0096 CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 140      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.