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: 548

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
585-548 A Byron NY BYRNNYBYRP0  9104 VERIZON NEW YORK, INC. 140      
585-548 0 Byron NY   384C ONVOY, LLC- NY 140   2014-09-08   
585-548 1 Byron NY   155E PEERLESS NETWORK OF NEW YORK, LLC - NY 140   2015-12-28   
585-548 2 Byron NY   9104 VERIZON NEW YORK, INC. 140      
585-548 3 Byron NY   1215 CORETEL NEW YORK, INC. - NY 140   2019-04-09   
585-548 4 Byron NY   4006 LEVEL 3 COMMUNICATIONS, LLC - NY 140   2015-06-12   
585-548 5 Byron NY   793K TWC IP ENABLED SERVICES, LLC 140   2010-08-08   
585-548 6 Byron NY   997E BANDWIDTH.COM CLEC, LLC - NY 140   2012-01-12   
585-548 7 Byron NY   9104 VERIZON NEW YORK, INC. 140      
585-548 8 Byron NY   384C ONVOY, LLC- NY 140   2012-09-23   
585-548 9 Byron NY   9104 VERIZON NEW YORK, INC. 140      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.