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.

Fond du Lac, WI

1 2 3 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
920-204 A MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-204 0 FDULWIGN0MD  3839 CHARTER FIBERLINK, LLC - WI 356   2018-05-20   
920-204 1 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-204 2 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-204 3 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356   2018-08-03   
920-204 4 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-204 5 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-204 6 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2010-08-07   
920-204 7 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2010-04-03   
920-204 8 MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2010-09-07   
920-204 9 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356   2011-01-22   
920-238 A MILWWI12ZMD  6274 UNITED STATES CELLULAR - WI 356      
920-238 0 MILWWI12ZMD  6274 UNITED STATES CELLULAR - WI 356      
920-238 1 MILWWI12ZMD  6274 UNITED STATES CELLULAR - WI 356      
920-238 2 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356   2011-02-14   
920-238 3 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2012-05-04   
920-238 4 BRFDWIJZDS0  7322 LEVEL 3 TELECOM OF WISCONSIN, LP - WI 356   2018-06-02   
920-238 5 MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2004-05-13   
920-238 6 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2011-02-28   
920-238 7 MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2005-06-23   
920-238 8 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2024-02-26   
920-238 9 FDULWIGN0MD  3839 CHARTER FIBERLINK, LLC - WI 356   2005-03-20   
920-251 A PEWTWICI7MD  5562 METROPCS, INC. 356      
920-251 0 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356      
920-251 1 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356      
920-251 2 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356      
920-251 3 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356      
920-251 4 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356      
920-251 5 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356      
920-251 6 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356      
920-251 7 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356      
920-251 8 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356      
920-251 9 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356      
920-263 A MILWWIAUX7Z  6692 NEW CELL DBA CELLCOM 356      
920-263 0 MILWWIAUX7Z  6692 NEW CELL DBA CELLCOM 356      
920-263 1 MILWWIAUX7Z  6692 NEW CELL DBA CELLCOM 356      
920-263 2 MILWWIAUX7Z  6692 NEW CELL DBA CELLCOM 356      
920-263 3 MILWWIAUX7Z  6692 NEW CELL DBA CELLCOM 356      
920-263 4 MILWWIAUX7Z  6692 NEW CELL DBA CELLCOM 356      
920-263 5 MILWWIAUX7Z  6692 NEW CELL DBA CELLCOM 356      
920-263 6 MILWWIAUX7Z  6692 NEW CELL DBA CELLCOM 356      
920-263 7 MILWWIAUX7Z  6692 NEW CELL DBA CELLCOM 356      
920-263 8 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356   2011-11-21   
920-263 9 MILWWIAUDS2  227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 356   2013-05-05   
920-266 A FDULWI01DS0  9327 WISCONSIN BELL INC 356      
920-266 0 FDULWI01DS0  9327 WISCONSIN BELL INC 356      
920-266 1 MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2023-06-04   
920-266 2 PEWTWICI7MD  5562 METROPCS, INC. 356   2011-09-15   
920-266 3 MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2006-04-07   
920-266 4 MILXWIILDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356   2007-02-07   
920-266 5 MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2007-03-04   
920-266 6 MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2006-08-24   
920-266 7 MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2008-01-28   
920-266 8 MILWWIHEWMD  516C AT&T CORP. 356   2006-06-30   
920-266 9 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2008-11-22   
920-273 A MILWWI12X8Y  829J PAETEC ITEL, LLC 356      
920-273 0 MILWWI12X8Y  829J PAETEC ITEL, LLC 356      
920-273 1 MILWWI12X8Y  829J PAETEC ITEL, LLC 356      
920-273 2 MILWWI12X8Y  829J PAETEC ITEL, LLC 356      
920-273 3 MILWWI12X8Y  829J PAETEC ITEL, LLC 356      
920-273 4 MILWWI12X8Y  829J PAETEC ITEL, LLC 356   2009-01-01   
920-273 5 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356   2009-08-14   
920-273 6 MILWWI12X8Y  829J PAETEC ITEL, LLC 356      
920-273 7 MILWWI12X8Y  829J PAETEC ITEL, LLC 356      
920-273 8 MILWWI12X8Y  829J PAETEC ITEL, LLC 356      
920-273 9 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356   2009-10-19   
920-322 A NWBLWICYGT1  7804 TDS METROCOM, INC. - WI 356      
920-322 0 NWBLWICYGT1  7804 TDS METROCOM, INC. - WI 356      
920-322 1 NWBLWICYGT1  7804 TDS METROCOM, INC. - WI 356      
920-322 2 NWBLWICYGT1  7804 TDS METROCOM, INC. - WI 356   2010-07-12   
920-322 3 NWBLWICYGT1  7804 TDS METROCOM, INC. - WI 356      
920-322 4 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2013-03-10   
920-322 5 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2014-06-19   
920-322 6 NWBLWICYGT1  7804 TDS METROCOM, INC. - WI 356      
920-322 7 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2014-10-24   
920-322 8 NWBLWICYGT1  7804 TDS METROCOM, INC. - WI 356      
920-322 9 NWBLWICYGT1  7804 TDS METROCOM, INC. - WI 356      
920-375 A PEWTWICI7MD  6529 T-MOBILE USA, INC. 356   2024-02-09   
920-375 0 PEWTWICI7MD  5562 METROPCS, INC. 356      
920-375 1 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2015-04-12   
920-375 2 MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2016-10-07   
920-375 3 MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2016-10-07   
920-375 4 FDULWIGN0MD  3839 CHARTER FIBERLINK, LLC - WI 356   2020-11-01   
920-375 5 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2015-05-10   
920-375 6 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356      
920-375 7 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2024-02-26   
920-375 8 MILWWIAUX6Y  073H TELNYX LLC 356   2017-03-14   
920-375 9 MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2015-09-10   
920-466 A MILWWI12X7X  9748 AMERICAN MESSAGING SERVICES, LLC 356      
920-517 A MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-539 A MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-579 A MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-579 0 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-579 1 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-579 2 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-579 3 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-579 4 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-579 5 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356   2022-02-12   
920-579 6 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      
920-579 7 MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356      

1 2 3 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.