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.

North Warren, WI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
608-677 A WRRNILXARS0  1036 FRONTIER NORTH, INC. - IL 360      
608-677 0   624H ONVOY SPECTRUM, LLC 360      
608-677 2 WRRNILXARS0  1036 FRONTIER NORTH, INC. - IL 360      
608-677 3 RCFRILRTZMD  225C ONVOY, LLC - WI 360      
608-677 4 RCFRILRTZMD  225C ONVOY, LLC - WI 360      
608-677 6 RCFRILRTZMD  225C ONVOY, LLC - WI 360      
608-677 7 RCFRILRTXRX  508J CENTURYLINK COMMUNICATIONS, LLC 360      
608-677 8 RCFRILRTZMD  225C ONVOY, LLC - WI 360      
608-677 9   792K CHARTER IP ENABLED SERVICES, LLC 360      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.