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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
608-237 A Madison WI MDSNWI021MD  7421 AT&T LOCAL 354      
608-237 0 Madison WI   7421 AT&T LOCAL 354      
608-237 1 Madison WI   7979 US XCHANGE OF WISCONSIN LLC DBA CHOICE ONE COMM WI 354   2004-12-06   
608-237 2 Madison WI   7979 US XCHANGE OF WISCONSIN LLC DBA CHOICE ONE COMM WI 354   2005-02-18   
608-237 3 Madison WI   7979 US XCHANGE OF WISCONSIN LLC DBA CHOICE ONE COMM WI 354   2005-06-10   
608-237 4 Madison WI   7979 US XCHANGE OF WISCONSIN LLC DBA CHOICE ONE COMM WI 354   2005-06-10   
608-237 5 Madison WI   7421 AT&T LOCAL 354      
608-237 6 Madison WI   7979 US XCHANGE OF WISCONSIN LLC DBA CHOICE ONE COMM WI 354   2005-09-08   
608-237 7 Madison WI   7979 US XCHANGE OF WISCONSIN LLC DBA CHOICE ONE COMM WI 354   2005-09-08   
608-237 8 Madison WI   7979 US XCHANGE OF WISCONSIN LLC DBA CHOICE ONE COMM WI 354   2005-10-02   
608-237 9 Madison WI   7421 AT&T LOCAL 354      

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.