The map shows where FTC DSI fiber internet is available and FTC DSI 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 FTC DSI services at least one address. Internet service is not necessarily available at every location within a colored hex.
Select a city to show FTC DSI Fiber availability in the surrounding area.
Along with fiber, FTC DSI also offers DSL. See FTC DSI DSL Availability.
Zoom out to view FTC DSI Fiber availability and speeds at the national level. However, the map works best when zoomed in, exploring FTC DSI Fiber availability in specific regions.
The availability or speed of service at a single address can dictate the color of the hexagon the address falls within. Accordingly, national-scale views with large hexagons will smooth over local variations in internet availability and speeds.
Broadband Map's information on FTC DSI 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).