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.

Madison, WI

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
608-204 A MDSNWIKWDS0  7804 TDS METROCOM INC. - WI 354      
608-206 A MDSNWIPUCM4  6274 UNITED STATES CELLULAR CORP. - WISCONSIN 354      
608-209 A   6664 SPRINT SPECTRUM L.P. 354      
608-210 A MDSNWIKWDS0  7804 TDS METROCOM INC. - WI 354      
608-210 0   7804 TDS METROCOM INC. - WI 354      
608-210 1   7804 TDS METROCOM INC. - WI 354      
608-210 2   7804 TDS METROCOM INC. - WI 354      
608-210 3   7804 TDS METROCOM INC. - WI 354      
608-210 4   7804 TDS METROCOM INC. - WI 354      
608-210 5   7804 TDS METROCOM INC. - WI 354      
608-210 6   7804 TDS METROCOM INC. - WI 354      
608-210 7   7804 TDS METROCOM INC. - WI 354      
608-210 8   7804 TDS METROCOM INC. - WI 354      
608-210 9   6664 SPRINT SPECTRUM L.P. 354   2005-11-19   
608-212 A MDSNWIPUCM4  6274 UNITED STATES CELLULAR CORP. - WISCONSIN 354      
608-213 A MDSNWIADXRX  6664 SPRINT SPECTRUM L.P. 354      
608-215 A MDSNWIADX5X  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354      
608-216 A MDSNWI14DS0  9327 AMERITECH WISCONSIN 354      
608-216 0   9327 AMERITECH WISCONSIN 354      
608-216 1   6664 SPRINT SPECTRUM L.P. 354   2004-01-28   
608-216 2   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2008-02-01   
608-216 3   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2010-08-02   
608-216 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2004-07-02   
608-216 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2004-09-02   
608-216 6   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2006-08-21   
608-216 7   7804 TDS METROCOM INC. - WI 354   2006-03-09   
608-216 8   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2010-08-02   
608-216 9   7804 TDS METROCOM INC. - WI 354   2006-03-09   
608-217 A MDSNWIADXRX  6664 SPRINT SPECTRUM L.P. 354      
608-217 0   6664 SPRINT SPECTRUM L.P. 354   2004-03-08   
608-217 1   6664 SPRINT SPECTRUM L.P. 354      
608-217 2   6664 SPRINT SPECTRUM L.P. 354      
608-217 3   6664 SPRINT SPECTRUM L.P. 354      
608-217 4   6664 SPRINT SPECTRUM L.P. 354      
608-217 5   6664 SPRINT SPECTRUM L.P. 354      
608-217 6   6664 SPRINT SPECTRUM L.P. 354      
608-217 7   6664 SPRINT SPECTRUM L.P. 354      
608-217 8   6664 SPRINT SPECTRUM L.P. 354      
608-217 9   6664 SPRINT SPECTRUM L.P. 354      
608-218 A MDSNWI13DS0  9327 AMERITECH WISCONSIN 354      
608-218 0   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2011-08-13   
608-218 1   9327 AMERITECH WISCONSIN 354      
608-218 2   9327 AMERITECH WISCONSIN 354      
608-218 3   007F BANDWIDTH.COM CLEC, LLC - WI 354   2012-09-20   
608-218 4   007F BANDWIDTH.COM CLEC, LLC - WI 354   2010-03-21   
608-218 5   007F BANDWIDTH.COM CLEC, LLC - WI 354   2012-09-20   
608-218 6   9327 AMERITECH WISCONSIN 354      
608-218 7   9327 AMERITECH WISCONSIN 354      
608-218 8   9327 AMERITECH WISCONSIN 354      
608-218 9   9327 AMERITECH WISCONSIN 354      

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 >>

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

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.