Quantum Fiber services at least one location in each colored hexagon • Sponsored
Quantum Fiber services at least one location in each colored hexagon
Check address-level availability on Quantum Fiber's Website ↗ • Sponsored
The map shows where Quantum Fiber is available and Quantum Fiber speeds in different areas. When different max speeds are available at different addresses within a hex, color is determined by the fastest speed.
Colored hexagons indicate where Quantum Fiber services at least one address. Internet service is not necessarily available at every location within a colored hex.
Lumen Technologies introduced the Quantum Fiber brand in 2020. Over the years, Quantum Fiber gradually replaced CenturyLink as the customer-facing name for most of the company's mass-market fiber service. In early 2026, AT&T completed an acquisition of most of Lumen's mass-market fiber business, and the brand became Quantum Fiber from AT&T.
Select a city to show Quantum Fiber availability in the surrounding area.
In filings with the FCC, Quantum Fiber reported a very limited amount of DSL service. Reported DSL service areas can be found on the Quantum Fiber DSL Availability Map.
Broadband Map's information on Quantum Fiber availability relies heavily on the December 2025 data from the FCC's Broadband Data Collection program (published May 2026, with FCC revisions through July 2026).