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.

NPA: 920 [Rate centres in NPA 920] [Dial plan for NPA 920]

<< 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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
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   
920-547 9 Sheboygan WI   225C ONVOY, LLC - WI 356   2021-11-15   
920-548 A Green Bay WI   520K TDS METROCOM, LLC 350      
920-548 0 Green Bay WI   225C ONVOY, LLC - WI 350   2024-02-04   
920-548 1 Green Bay WI   520K TDS METROCOM, LLC 350      
920-548 2 Green Bay WI   6274 UNITED STATES CELLULAR - WI 350   2025-02-20   
920-548 3 Green Bay WI   6274 UNITED STATES CELLULAR - WI 350   2025-02-20   
920-548 4 Green Bay WI   520K TDS METROCOM, LLC 350      
920-548 5 Green Bay WI   6274 UNITED STATES CELLULAR - WI 350   2025-02-20   
920-548 6 Green Bay WI   520K TDS METROCOM, LLC 350      
920-548 7 Green Bay WI   520K TDS METROCOM, LLC 350      
920-548 8 Green Bay WI   520K TDS METROCOM, LLC 350      
920-548 9 Green Bay WI   520K TDS METROCOM, LLC 350      
920-549 A Randolph WI MILWWI12ZMD  6274 UNITED STATES CELLULAR - WI 356      
920-549 0 Randolph WI   6274 UNITED STATES CELLULAR - WI 356   2021-10-14   

<< 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 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.