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: 883

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
585-883 A Mount Morris NY ROCHNYXA7MD  384C ONVOY, LLC- NY 974      
585-883 0 Mount Morris NY   384C ONVOY, LLC- NY 974   2017-04-08   
585-883 1 Mount Morris NY   829J PAETEC ITEL, LLC 974   2016-04-07   
585-883 2 Mount Morris NY   384C ONVOY, LLC- NY 974   2019-05-22   
585-883 3 Mount Morris NY   384C ONVOY, LLC- NY 974   2019-09-09   
585-883 4 Mount Morris NY   818H PEERING HUB, INC. - NY 974   2023-12-22   
585-883 5 Mount Morris NY   5562 METROPCS, INC. 974   2021-07-15   
585-883 6 Mount Morris NY   508J CENTURYLINK COMMUNICATIONS, LLC 974   2014-10-03   
585-883 7 Mount Morris NY   5562 METROPCS, INC. 974   2021-09-18   
585-883 8 Mount Morris NY   997E BANDWIDTH.COM CLEC, LLC - NY 974   2012-04-06   
585-883 9 Mount Morris NY   073H TELNYX LLC 974   2021-02-22   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.