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: 598

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
608-598 A Madison WI MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-598 0 Madison WI MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2015-10-01   
608-598 1 Madison WI LCRSWIXCIMD  508J CENTURYLINK COMMUNICATIONS, LLC 354   2015-12-29   
608-598 2 Madison WI LCRSWIXCIMD  508J CENTURYLINK COMMUNICATIONS, LLC 354   2015-12-29   
608-598 3 Madison WI LCRSWIXCIMD  508J CENTURYLINK COMMUNICATIONS, LLC 354   2015-12-29   
608-598 4 Madison WI LCRSWIXCIMD  508J CENTURYLINK COMMUNICATIONS, LLC 354   2015-12-29   
608-598 5 Madison WI LCRSWIXCIMD  508J CENTURYLINK COMMUNICATIONS, LLC 354   2015-12-29   
608-598 6 Madison WI LCRSWIXCIMD  508J CENTURYLINK COMMUNICATIONS, LLC 354   2015-12-29   
608-598 7 Madison WI MDSNWI11XNX  6529 T-MOBILE USA, INC. 354   2016-02-05   
608-598 8 Madison WI MDSNWI11XNX  6529 T-MOBILE USA, INC. 354   2016-02-05   
608-598 9 Madison WI MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2016-01-30   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.