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: 543

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
585-543 A Olean NY BFLONYGODS2  7140 TC SYSTEMS, INC. - NY 140      
585-543 0 Olean NY   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 140   2025-11-10   
585-543 1 Olean NY   6959 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 140   2019-08-19   
585-543 4 Olean NY   384C ONVOY, LLC- NY 140   2012-10-12   
585-543 5 Olean NY   7140 TC SYSTEMS, INC. - NY 140      
585-543 6 Olean NY   516J TON80 COMMUNICATIONS, LLC 140   2022-03-21   
585-543 7 Olean NY   624H ONVOY SPECTRUM, LLC 140   2021-04-30   
585-543 9 Olean NY   6959 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 140   2025-11-11   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.