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Madison, WI

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
608-630 1 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2007-01-04   
608-630 2 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2007-03-05   
608-630 3 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2007-06-10   
608-630 4 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2007-06-10   
608-630 5 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2007-07-30   
608-630 6 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2007-07-30   
608-630 7 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2007-10-01   
608-630 8   792K CHARTER IP ENABLED SERVICES, LLC 354   2007-09-13   
608-630 9   792K CHARTER IP ENABLED SERVICES, LLC 354   2010-01-14   
608-640 A MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-640 0 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2016-09-29   
608-640 1 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354   2016-10-13   
608-640 2 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354   2016-10-13   
608-640 3 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2018-05-18   
608-640 4   792K CHARTER IP ENABLED SERVICES, LLC 354   2018-04-01   
608-640 5   792K CHARTER IP ENABLED SERVICES, LLC 354   2018-09-23   
608-640 6 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2017-07-22   
608-640 7 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2016-10-14   
608-640 8 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2016-10-14   
608-640 9 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2017-06-29   
608-657 A MDSRWIKEDS0  6630 SPOK, INC. 354      
608-658 A MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354      
608-658 0 MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2003-09-30   
608-658 1 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354      
608-658 2 MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2003-09-30   
608-658 3 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354      
608-658 4 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354      
608-658 5 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354      
608-658 6 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354      
608-658 7 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354      
608-658 8 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354      
608-658 9 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354      
608-661 A   520K TDS METROCOM, LLC 354      
608-663 A   520K TDS METROCOM, LLC 354      
608-665 A   520K TDS METROCOM, LLC 354      
608-665 0   520K TDS METROCOM, LLC 354   2008-10-19   
608-665 1 MDSNWI11XIX  007F BANDWIDTH.COM CLEC, LLC - WI 354   2011-08-29   
608-665 2 MDSNWI11XIX  007F BANDWIDTH.COM CLEC, LLC - WI 354   2011-08-29   
608-665 3 MDSOWIGTAMD  516C AT&T CORP. 354   2011-04-20   
608-665 4 MDSNWI13DS0  9327 WISCONSIN BELL INC 354   2010-06-18   
608-665 5 MDSNWI13DS0  9327 WISCONSIN BELL INC 354   2010-06-18   
608-665 6 MDSNWI13DS0  9327 WISCONSIN BELL INC 354   2010-06-18   
608-665 7 MDSNWI13DS0  9327 WISCONSIN BELL INC 354   2010-06-18   
608-665 8 MDSNWI13DS0  9327 WISCONSIN BELL INC 354   2010-06-18   
608-665 9 MDSNWI11XIX  007F BANDWIDTH.COM CLEC, LLC - WI 354   2011-08-29   
608-669 A MDSNWI11X1X  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 354      
608-669 0 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2004-05-06   
608-669 1 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2004-05-06   
608-669 2 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2004-05-06   
608-669 3 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2004-05-06   
608-669 4 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2004-05-06   
608-669 5 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2004-05-06   
608-669 6 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2004-05-06   
608-669 7 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2004-05-06   
608-669 8 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2004-05-06   
608-669 9 MDSNWI11X1X  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 354   2003-09-05   
608-673 A MDSNWI11XGY  515J IP HORIZON LLC 354      
608-673 0 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2021-09-17   
608-673 1   515J IP HORIZON LLC 354   2021-06-24   
608-673 2 MDSRWIKE5MD  516J TON80 COMMUNICATIONS, LLC 354   2021-09-18   
608-673 3 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2021-07-02   
608-673 4 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2021-07-02   
608-673 5 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2021-07-02   
608-673 6 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2021-07-02   
608-673 7 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2021-09-17   
608-673 8 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2022-06-17   
608-673 9 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2022-06-17   
608-682 A MDSRWIKEDS0  6630 SPOK, INC. 354     2026-06-27 
608-690 A MDSNWI11Y0X  425J CSC WIRELESS, LLC 354      
608-690 0 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2022-09-01   
608-690 1 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2023-06-15   
608-690 2 MDSNWI11Y0X  425J CSC WIRELESS, LLC 354   2020-08-31   
608-690 3 MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2022-04-30   
608-690 4 MDSRWIKEDS0  227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 354   2020-11-01   
608-690 5 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2021-01-07   
608-690 6 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2021-01-07   
608-690 7 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2021-01-07   
608-690 8 MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2022-02-25   
608-690 9 MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2022-10-14   
608-692 A MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354      
608-695 A MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354      
608-698 A MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354      
608-707 A MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354      
608-707 0 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354   2020-05-25   
608-707 1 MDSNWI11XIX  007F BANDWIDTH.COM CLEC, LLC - WI 354   2020-05-25   
608-707 2 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354   2021-05-10   
608-707 3 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354   2021-05-10   
608-707 4 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354   2021-05-10   
608-707 5 MDSNWI02ZMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 354   2020-09-16   
608-707 6 MDSNWI02ZMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 354   2020-11-17   
608-707 7 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354   2021-05-10   
608-707 8 MDSRWIKEDS0  227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 354   2020-05-25   
608-707 9 MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2023-09-01   
608-709 A MDSNWI11XSX  7322 LEVEL 3 TELECOM OF WISCONSIN, LP - WI 354      
608-709 0 MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2013-11-30   
608-709 1   792K CHARTER IP ENABLED SERVICES, LLC 354   2013-07-18   
608-709 2 MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2013-02-22   
608-709 3 MDSNWI11XSX  7322 LEVEL 3 TELECOM OF WISCONSIN, LP - WI 354   2012-11-26   
608-709 4 MDSNWI11X1X  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 354   2013-08-23   
608-709 5   792K CHARTER IP ENABLED SERVICES, LLC 354   2013-09-18   

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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