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.

Region: 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 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-535 8 Washington Island WI   6529 T-MOBILE USA, INC. 350   2025-02-24   
920-535 9 Washington Island WI   6692 NEW CELL DBA CELLCOM 350      
920-536 A Luxemburg WI GNBYWIEMCM2  6692 NEW CELL DBA CELLCOM 350      
920-536 0 Luxemburg WI   6692 NEW CELL DBA CELLCOM 350      
920-536 1 Luxemburg WI   6692 NEW CELL DBA CELLCOM 350      
920-536 2 Luxemburg WI   6692 NEW CELL DBA CELLCOM 350      
920-536 3 Luxemburg WI   6274 UNITED STATES CELLULAR - WI 350   2008-09-04   
920-536 4 Luxemburg WI   225C ONVOY, LLC - WI 350   2020-07-11   
920-536 5 Luxemburg WI   225C ONVOY, LLC - WI 350   2020-07-11   
920-536 6 Luxemburg WI   766H INTEGRATED PATH COMMUNICATIONS, LLC - WI 350   2018-07-12   
920-536 7 Luxemburg WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350   2014-11-25   
920-536 8 Luxemburg WI   225C ONVOY, LLC - WI 350   2021-01-28   
920-536 9 Luxemburg WI   225C ONVOY, LLC - WI 350   2018-10-25   
920-537 A Horicon WI MILWWIAUDS1  225C ONVOY, LLC - WI 356      
920-537 2 Horicon WI   516J TON80 COMMUNICATIONS, LLC 356   2021-10-02   
920-537 4 Horicon WI   6529 T-MOBILE USA, INC. 356   2021-11-11   
920-537 5 Horicon WI   6529 T-MOBILE USA, INC. 356   2021-11-11   
920-537 6 Horicon WI   6529 T-MOBILE USA, INC. 356   2021-11-11   
920-537 7 Horicon WI   225C ONVOY, LLC - WI 356   2021-09-12   
920-538 A New London WI MNSHWIDQ1MD  6274 UNITED STATES CELLULAR - WI 350      
920-538 0 New London WI   6274 UNITED STATES CELLULAR - WI 350      
920-538 1 New London WI   6274 UNITED STATES CELLULAR - WI 350      
920-538 2 New London WI   6274 UNITED STATES CELLULAR - WI 350      
920-538 3 New London WI   6274 UNITED STATES CELLULAR - WI 350      
920-538 4 New London WI   6274 UNITED STATES CELLULAR - WI 350      
920-538 5 New London WI   6274 UNITED STATES CELLULAR - WI 350      
920-538 6 New London WI   6274 UNITED STATES CELLULAR - WI 350   2013-11-01   
920-538 7 New London WI   6274 UNITED STATES CELLULAR - WI 350   2020-04-17   
920-538 8 New London WI   516J TON80 COMMUNICATIONS, LLC 350   2021-09-25   
920-538 9 New London WI   6529 T-MOBILE USA, INC. 350   2024-03-21   
920-539 A Fond du Lac WI MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-540 A Appleton WI GNBYWIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 350      
920-541 A Jefferson WI MILWWIHEVMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
920-541 0 Jefferson WI   227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 356   2013-05-05   
920-541 1 Jefferson WI   225C ONVOY, LLC - WI 356   2016-04-11   
920-541 2 Jefferson WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2005-11-12   
920-541 3 Jefferson WI   792K CHARTER IP ENABLED SERVICES, LLC 356   2006-02-11   
920-541 4 Jefferson WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2004-07-02   
920-541 5 Jefferson WI   225C ONVOY, LLC - WI 356   2016-04-11   
920-541 6 Jefferson WI   007F BANDWIDTH.COM CLEC, LLC - WI 356   2010-04-03   
920-541 7 Jefferson WI   007F BANDWIDTH.COM CLEC, LLC - WI 356   2010-08-08   
920-541 8 Jefferson WI   516C AT&T CORP. 356   2011-11-28   
920-541 9 Jefferson WI   7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
920-542 A Fort Atkinson WI MILWWIHEVMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
920-542 0 Fort Atkinson WI   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356   2016-06-11   
920-542 1 Fort Atkinson WI   792K CHARTER IP ENABLED SERVICES, LLC 356   2013-03-22   
920-542 2 Fort Atkinson WI   007F BANDWIDTH.COM CLEC, LLC - WI 356   2014-10-23   
920-542 3 Fort Atkinson WI   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356   2013-11-01   
920-542 4 Fort Atkinson WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2004-07-02   
920-542 5 Fort Atkinson WI   516C AT&T CORP. 356   2011-06-17   
920-542 6 Fort Atkinson WI   225C ONVOY, LLC - WI 356   2015-05-10   
920-542 7 Fort Atkinson WI   508J CENTURYLINK COMMUNICATIONS, LLC 356   2014-12-05   
920-542 8 Fort Atkinson WI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2016-12-02   
920-542 9 Fort Atkinson WI   7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
920-543 A Burnett WI MILWWIHEVMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
920-543 0 Burnett WI   227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 356   2013-05-06   
920-543 1 Burnett WI   225C ONVOY, LLC - WI 356   2021-04-05   
920-543 2 Burnett WI   227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 356   2013-05-06   
920-543 3 Burnett WI   007F BANDWIDTH.COM CLEC, LLC - WI 356   2010-08-07   
920-543 4 Burnett WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2004-07-02   
920-543 5 Burnett WI   007F BANDWIDTH.COM CLEC, LLC - WI 356   2010-03-04   
920-543 6 Burnett WI   007F BANDWIDTH.COM CLEC, LLC - WI 356   2008-11-22   
920-543 7 Burnett WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2011-04-15   
920-543 8 Burnett WI   516C AT&T CORP. 356   2011-06-17   
920-543 9 Burnett WI   7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
920-544 A Green Bay WI APPLWI01XWX  623D TIME WARNER CABLE INFORMATION SVCS (WISCONSIN) WI 350      
920-544 0 Green Bay WI   623D TIME WARNER CABLE INFORMATION SVCS (WISCONSIN) WI 350      
920-544 1 Green Bay WI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 350   2007-05-14   
920-544 2 Green Bay WI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 350   2007-05-14   
920-544 3 Green Bay WI   6529 T-MOBILE USA, INC. 350   2007-08-01   
920-544 4 Green Bay WI   623D TIME WARNER CABLE INFORMATION SVCS (WISCONSIN) WI 350   2005-04-26   
920-544 5 Green Bay WI   623D TIME WARNER CABLE INFORMATION SVCS (WISCONSIN) WI 350   2005-09-29   
920-544 6 Green Bay WI   6529 T-MOBILE USA, INC. 350   2007-09-18   
920-544 7 Green Bay WI   6529 T-MOBILE USA, INC. 350   2007-10-18   
920-544 8 Green Bay WI   623D TIME WARNER CABLE INFORMATION SVCS (WISCONSIN) WI 350   2007-02-07   
920-544 9 Green Bay WI   623D TIME WARNER CABLE INFORMATION SVCS (WISCONSIN) WI 350   2006-06-13   
920-545 A Watertown WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356      
920-545 0 Watertown WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2005-09-16   
920-545 1 Watertown WI   225C ONVOY, LLC - WI 356   2013-04-12   
920-545 2 Watertown WI   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356   2007-02-07   
920-545 3 Watertown WI   495J STRATUS NETWORKS 356   2020-09-30   
920-545 4 Watertown WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356      
920-545 5 Watertown WI   007F BANDWIDTH.COM CLEC, LLC - WI 356   2013-09-14   
920-545 6 Watertown WI   227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 356   2020-11-21   
920-545 7 Watertown WI   508J CENTURYLINK COMMUNICATIONS, LLC 356   2014-12-31   
920-545 8 Watertown WI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2015-12-03   
920-545 9 Watertown WI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2015-12-03   
920-546 A Hustisford WI MILWWIAUDS1  225C ONVOY, LLC - WI 356      
920-546 4 Hustisford WI   516J TON80 COMMUNICATIONS, LLC 356   2021-09-13   
920-546 6 Hustisford WI   225C ONVOY, LLC - WI 356   2021-09-12   
920-547 A Sheboygan WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356      
920-547 0 Sheboygan WI   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356   2013-01-07   
920-547 1 Sheboygan WI   225C ONVOY, LLC - WI 356   2021-11-15   
920-547 2 Sheboygan WI   225C ONVOY, LLC - WI 356   2016-03-21   
920-547 3 Sheboygan WI   225C ONVOY, LLC - WI 356   2016-03-21   
920-547 4 Sheboygan WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356      
920-547 5 Sheboygan WI   7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356   2015-11-27   
920-547 6 Sheboygan WI   227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 356   2013-05-05   
920-547 7 Sheboygan WI   227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 356   2013-05-05   
920-547 8 Sheboygan WI   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356   2019-10-31   

<< 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 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 >>

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.