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: 608 [Rate centres in NPA 608] [Dial plan for NPA 608]

NXX: 585

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
608-585 A Ithaca WI ITHCWIXARS0  0886 FRONTIER NORTH INC. - WI 354      
608-585 0 Ithaca WI   2556 TECH COM, INC. - WI 354   2020-10-09   
608-585 1 Ithaca WI   792K CHARTER IP ENABLED SERVICES, LLC 354   2024-04-07   
608-585 2 Ithaca WI   0886 FRONTIER NORTH INC. - WI 354      
608-585 3 Ithaca WI   0886 FRONTIER NORTH INC. - WI 354      
608-585 4 Ithaca WI   225C ONVOY, LLC - WI 354   2021-07-25   
608-585 5 Ithaca WI   225C ONVOY, LLC - WI 354   2021-04-04   
608-585 6 Ithaca WI   624H ONVOY SPECTRUM, LLC 354   2021-06-24   
608-585 7 Ithaca WI   508J CENTURYLINK COMMUNICATIONS, LLC 354   2014-12-29   
608-585 8 Ithaca WI   225C ONVOY, LLC - WI 354   2020-05-25   
608-585 9 Ithaca WI   145J TERRA NOVA TELECOM INC. 354   2025-08-14   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.