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: MDSRWIKE4MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
608-502 8 Evansville WI 145J TERRA NOVA TELECOM INC. 354   2024-02-14   
608-721 2 Madison WI 145J TERRA NOVA TELECOM INC. 354   2024-12-29   
608-728 9 Janesville WI 145J TERRA NOVA TELECOM INC. 354   2024-09-09   
608-866 A Madison WI 145J TERRA NOVA TELECOM INC. 354      
815-704 2 South Beloit IL 145J TERRA NOVA TELECOM INC. 354   2024-12-28   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.