X0101 EFFECT 33 LIVE 2016-04-20 16:00:00

S-4

0001502756 ZAYO GROUP LLC 333-210791 0001502757 Zayo Capital, Inc. 333-210791-25 0001654969 Latisys SPV, Inc. 333-210791-24 0001655137 AboveNet Communications, LLC 333-210791-23 0001671791 Allstream Fiber U.S., Inc. 333-210791-22 0001503116 Fibernet Telecom, Inc. 333-210791-21 0001654967 Latisys-Ashburn, LLC 333-210791-20 0001654966 Latisys-Ashburn Holdings Corp 333-210791-19 0001654964 Latisys-Chicago, LLC 333-210791-18 0001655479 Latisys-Chicago Holdings Corp. 333-210791-17 0001654962 Latisys Corp 333-210791-16 0001654968 Latisys-Denver, LLC 333-210791-15 0001654957 Latisys Holdings Corp 333-210791-14 0001655056 Latisys-Irvine, LLC 333-210791-13 0001655071 Latisys-Irvine Properties, LLC 333-210791-12 0001655466 USCarrier, LLC 333-210791-11 0001655031 Zayo Colocation, LLC 333-210791-10 0001655102 Zayo Corelink Acquisition Sub, LLC 333-210791-09 0001655106 Zayo Professional Services, LLC 333-210791-08 0001655107 Colo Facilities Atlanta, LLC 333-210791-07 0001655116 Fiberlink, LLC 333-210791-06 0001655117 IdeaTek Systems, Inc. 333-210791-05 0001655124 Access Communications, Inc. 333-210791-04 0001503115 Local Fiber LLC 333-210791-03 0001470003 CLEARVIEW INTERNATIONAL, LLC 333-210791-02 0001671993 CVMS Waco Data Partners, LLC 333-210791-01