Zayo Group Holdings, Inc. has landed a 20-year $50 million agreement for dark fiber worth from a major U.S. carrier. The unidentified customer will use 3,200 route miles of dark fiber on Zayo’s existing long-haul fiber-optic network as well as on previously announced routes currently under construction.

“Zayo’s dark fiber backbone will enable the customer to expand its footprint and provide high-bandwidth services to consumer and business customers,” said Randy Brogle, vice president of Long Haul Dark Fiber at Zayo. “Dark fiber is an ideal solution for carriers that want to expand their network presence and effectively support future capacity requirements.”

See here for more details