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: 284

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
585-284 A Rochester NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974      
585-284 0 Rochester NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974   2007-04-24   
585-284 1 Rochester NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974   2007-04-24   
585-284 2 Rochester NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974   2007-04-24   
585-284 3 Rochester NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974   2007-04-24   
585-284 4 Rochester NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974   2007-04-24   
585-284 5 Rochester NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974   2007-04-24   
585-284 6 Rochester NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974   2007-04-24   
585-284 7 Rochester NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974   2007-04-24   
585-284 8 Rochester NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974   2007-04-24   
585-284 9 Rochester NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974   2007-04-24   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.