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: ROCHNYXJRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
585-225 A Rochester NY 0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      
585-227 A Rochester NY 0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      
585-368 A Rochester NY 0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      
585-453 A Rochester NY 0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      
585-720 A Rochester NY 0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      
585-723 A Rochester NY 0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.