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 23 24 25 26 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
608-229 9 MDSNWIUQDS0  7588 CENTURYLINK COMMUNICATIONS LLC - WI 354      
608-230 A MDSNWIGJDS0  7804 TDS METROCOM, INC. - WI 354      
608-230 0   3839 CHARTER FIBERLINK, LLC - WI 354      
608-230 1 MDSNWIKWDS0  7804 TDS METROCOM, INC. - WI 354      
608-230 2 MDSNWIGJDS0  7804 TDS METROCOM, INC. - WI 354      
608-230 3 MDSNWIGJDS0  7804 TDS METROCOM, INC. - WI 354      
608-230 4 MDSNWIGJDS0  7804 TDS METROCOM, INC. - WI 354      
608-230 5 FTBGWIDKGT0  3839 CHARTER FIBERLINK, LLC - WI 354   2006-10-10   
608-230 6 FTBGWIDKGT0  3839 CHARTER FIBERLINK, LLC - WI 354   2004-04-13   
608-230 7 MDSNWIKWDS0  7804 TDS METROCOM, INC. - WI 354      
608-230 8 MDSNWIKWDS0  7804 TDS METROCOM, INC. - WI 354      
608-230 9 MDSNWIGJDS0  7804 TDS METROCOM, INC. - WI 354      
608-231 A MDSNWI13DS0  9327 WISCONSIN BELL INC 354      
608-232 A MDSNWI13DS0  9327 WISCONSIN BELL INC 354      
608-233 A MDSNWI13DS0  9327 WISCONSIN BELL INC 354      
608-234 A MDSNWI02ZMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 354      
608-234 0 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2004-09-07   
608-234 1 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2004-09-27   
608-234 2 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2004-09-27   
608-234 3 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2011-02-14   
608-234 4 MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2008-01-28   
608-234 5 MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2008-01-28   
608-234 6 MDSNWI02ZMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 354      
608-234 7 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2004-10-28   
608-234 8 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2004-10-28   
608-234 9 MDSNWI02ZMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 354      
608-235 A MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-236 A MDSNWI13DS0  9327 WISCONSIN BELL INC 354      
608-236 0 MDSNWI13DS0  9327 WISCONSIN BELL INC 354      
608-236 1 MDSNWI13DS0  9327 WISCONSIN BELL INC 354      
608-236 2 MDSNWI13DS0  9327 WISCONSIN BELL INC 354      
608-236 3 MDSNWI11XNX  6529 T-MOBILE USA, INC. 354   2016-02-05   
608-236 4 MDSNWI13DS0  9327 WISCONSIN BELL INC 354      
608-236 5 MDSNWI13DS0  9327 WISCONSIN BELL INC 354      
608-236 6 MDSNWI13DS0  9327 WISCONSIN BELL INC 354      
608-236 7 MDSNWI13DS0  9327 WISCONSIN BELL INC 354      
608-236 8 MDSNWI13DS0  9327 WISCONSIN BELL INC 354      
608-236 9 MDSNWI13DS0  9327 WISCONSIN BELL INC 354      
608-237 A MDSNWI02ZMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 354      
608-237 0 MDSNWI02ZMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 354      
608-237 1 MDSOWILM2MD  7979 US XCHANGE OF WISCONSIN LLC DBA CHOICE ONE COMM WI 354   2004-12-06   
608-237 2 MDSOWILM2MD  7979 US XCHANGE OF WISCONSIN LLC DBA CHOICE ONE COMM WI 354   2005-02-18   
608-237 3 MDSOWILM2MD  7979 US XCHANGE OF WISCONSIN LLC DBA CHOICE ONE COMM WI 354   2005-06-10   
608-237 4 MDSOWILM2MD  7979 US XCHANGE OF WISCONSIN LLC DBA CHOICE ONE COMM WI 354   2005-06-10   
608-237 5 MDSNWI02ZMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 354      
608-237 6 MDSOWILM2MD  7979 US XCHANGE OF WISCONSIN LLC DBA CHOICE ONE COMM WI 354   2005-09-08   
608-237 7 MDSOWILM2MD  7979 US XCHANGE OF WISCONSIN LLC DBA CHOICE ONE COMM WI 354   2005-09-08   
608-237 8 MDSOWILM2MD  7979 US XCHANGE OF WISCONSIN LLC DBA CHOICE ONE COMM WI 354   2005-10-02   
608-237 9 MDSNWI02ZMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 354      
608-238 A MDSNWI13DS0  9327 WISCONSIN BELL INC 354      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 >>

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.