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AT&T to Acquire Lumen's Quantum Fiber Business for $5.75 Billion

The deal adds nearly 1 million fiber subscribers to AT&T's network and allows Lumen to focus on enterprise and AI-driven services.

Steve Smith, of CenturyLink, works on a residential fiber install at a home in Highlands neighborhood on December 23, 2019 in Denver, Colorado. CenturyLink's fiber network, along with the related company Quantum Fiber, are being purchased by AT&T for $5.75 billion. (Photo by RJ Sangosti/The Denver Post)
An AT&T logo is pictured in Pasadena, California, U.S., January 24, 2018. REUTERS/Mario Anzuoni
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A CenturyLink service van seen from behind, with several CenturyLink logos visible.

Overview

  • AT&T's acquisition of Lumen's Quantum Fiber consumer business will expand its fiber network across 11 states and eight major metropolitan areas.
  • The $5.75 billion transaction is expected to close in the first half of 2026, pending regulatory approval.
  • Lumen plans to use $4.8 billion from the sale to reduce debt and cut $300 million in annual interest expenses.
  • The deal enables Lumen to concentrate on enterprise customers and invest in low-latency technology for AI workflows.
  • AT&T will house the acquired assets in a new subsidiary, with plans to sell a minority stake in the future.