BOULDER, Colo.--(BUSINESS WIRE)--Zayo Group, LLC (“Zayo”), a subsidiary of Zayo Group Holdings, Inc. (NYSE: ZAYO) and international provider of Bandwidth Infrastructure services, announced today that it has closed its previously announced offering of $350 million aggregate principal amount of its 6.375% Senior Notes due 2025 (the “2025 Senior Notes”) and completed the amendment and restatement of its Credit Agreement (the “Amended and Restated Credit Agreement”) pursuant to an Amendment and Res