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: 404

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
585-404 A Henrietta NY   793K TWC IP ENABLED SERVICES, LLC 974   2025-03-04   
585-404 0 Henrietta NY   793K TWC IP ENABLED SERVICES, LLC 974   2016-10-13   
585-404 1 Henrietta NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974   2016-10-14   
585-404 2 Henrietta NY ROCHNYEI9MD  145J TERRA NOVA TELECOM INC. 974   2024-10-21   
585-404 3 Henrietta NY ROCHNYXAGMD  997E BANDWIDTH.COM CLEC, LLC - NY 974   2018-06-03   
585-404 4 Henrietta NY ROCHNYXA7MD  384C ONVOY, LLC- NY 974   2017-04-08   
585-404 5 Henrietta NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974   2017-09-16   
585-404 6 Henrietta NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974   2017-12-22   
585-404 7 Henrietta NY ROCHNYEIDS2  155E PEERLESS NETWORK OF NEW YORK, LLC - NY 974   2018-03-14   
585-404 8 Henrietta NY PRTNNYAD2MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 974   2016-10-18   
585-404 9 Henrietta NY ROCHNYEI5MD  073H TELNYX LLC 974   2017-03-27   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.