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: ROCHNYEIHMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
585-550 A Rochester NY 558C REGIONAL TELEPHONE CORPORATION - NY 974      
585-550 0 Rochester NY 558C REGIONAL TELEPHONE CORPORATION - NY 974   2023-01-01   
585-550 1 Rochester NY 558C REGIONAL TELEPHONE CORPORATION - NY 974   2023-11-03   
585-550 2 Rochester NY 558C REGIONAL TELEPHONE CORPORATION - NY 974   2023-11-03   
585-550 3 Rochester NY 558C REGIONAL TELEPHONE CORPORATION - NY 974   2023-11-03   
585-550 4 Rochester NY 558C REGIONAL TELEPHONE CORPORATION - NY 974   2023-09-18   
585-550 5 Rochester NY 558C REGIONAL TELEPHONE CORPORATION - NY 974   2023-09-18   
585-550 6 Rochester NY 558C REGIONAL TELEPHONE CORPORATION - NY 974   2023-09-18   
585-550 7 Rochester NY 558C REGIONAL TELEPHONE CORPORATION - NY 974   2023-09-18   
585-550 8 Rochester NY 558C REGIONAL TELEPHONE CORPORATION - NY 974   2023-09-18   
585-550 9 Rochester NY 558C REGIONAL TELEPHONE CORPORATION - NY 974   2023-09-18   
585-660 2 Rochester NY 558C REGIONAL TELEPHONE CORPORATION - NY 974   2023-09-07   
585-660 3 Rochester NY 558C REGIONAL TELEPHONE CORPORATION - NY 974   2023-09-07   
585-660 6 Rochester NY 558C REGIONAL TELEPHONE CORPORATION - NY 974   2023-09-07   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.