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.

Holmen, WI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
608-399 A HLMNWIXADS0  1159 CENTURYTEL CENTRAL WISCONSIN LLC DBA CENTURYLINK 354      
608-399 0 HLMNWIXADS0  1159 CENTURYTEL CENTRAL WISCONSIN LLC DBA CENTURYLINK 354      
608-399 1 ONLSWIBR0MD  3839 CHARTER FIBERLINK, LLC - WI 354   2005-12-23   
608-399 2 MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2006-10-01   
608-399 3 ONLSWIBR0MD  3839 CHARTER FIBERLINK, LLC - WI 354   2012-05-28   
608-399 4 MDSNWIPUCM4  6274 UNITED STATES CELLULAR - WI 354   2007-03-30   
608-399 5 MDSNWIPUCM4  6274 UNITED STATES CELLULAR - WI 354   2014-11-21   
608-399 6 MDSNWI11X1X  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 354   2014-01-15   
608-399 7 LCRSWIXCIMD  508J CENTURYLINK COMMUNICATIONS, LLC 354   2014-12-04   
608-399 8 MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2016-05-10   
608-399 9 MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2016-05-10   
608-526 A HLMNWIXADS0  1159 CENTURYTEL CENTRAL WISCONSIN LLC DBA CENTURYLINK 354      
608-540 A MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354      
608-540 2 LCRSWIXCXKX  225C ONVOY, LLC - WI 354   2021-07-02   
608-540 3 LCRSWIXCXKX  225C ONVOY, LLC - WI 354   2021-07-02   
608-540 4 LCRSWIXCXKX  225C ONVOY, LLC - WI 354   2021-02-10   
608-540 5 MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2020-02-17   
608-540 6 MDSNWI02ZMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 354   2019-08-28   
608-540 8 MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2019-12-13   
608-540 9 MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2018-12-08   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.