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: 585 [Rate centres in NPA 585] [Dial plan for NPA 585]

NXX: 556

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
585-556 A Darien NY BFLONYFRXHY  384C ONVOY, LLC- NY 140      
585-556 0 Darien NY   624H ONVOY SPECTRUM, LLC 140      
585-556 2 Darien NY BFLONYFRXHY  384C ONVOY, LLC- NY 140      
585-556 6 Darien NY BFLONYFRXHY  384C ONVOY, LLC- NY 140      
585-556 7 Darien NY BFLONYFRXHY  384C ONVOY, LLC- NY 140      
585-556 9 Darien NY BFLONYFRXBY  818H PEERING HUB, INC. - NY 140      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.