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.

Switch: MDSNWI11XBY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
608-403 0 Adams WI 197D VONAGE AMERICA LLC 354   2022-10-01   
608-747 5 Mauston WI 197D VONAGE AMERICA LLC 354   2022-10-01   
608-816 1 La Crosse WI 197D VONAGE AMERICA LLC 354   2022-10-01   
608-904 7 Beloit WI 197D VONAGE AMERICA LLC 354   2023-12-07   
608-909 5 Oregon WI 197D VONAGE AMERICA LLC 354   2023-11-26   
608-982 A Madison WI 197D VONAGE AMERICA LLC 354      
608-982 0 Madison WI 197D VONAGE AMERICA LLC 354   2018-05-14   

Last updated: Mon, 01 Apr 2024 02:18:34 UTC

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