The map shows where Tohono O'Odham Utility Authority DSL offers internet service. Colored hexagons indicate where Tohono O'Odham Utility Authority DSL services at least one address. Internet service is not necessarily available at every location within a colored hex. When different max speeds are available at different addresses within a hex, color is determined by the fastest speed.
Along with DSL, Tohono O'Odham Utility Authority also offers fiber. See Tohono O'Odham Utility Authority Fiber Availability.
Select a hexagon to see the max speed in a specific area. From the settings menu, toggle between residential and business internet.
Broadband Map's information on Tohono O'Odham Utility Authority DSL availability relies heavily on the November 2025 release from the FCC's Broadband Data Collection program (representing ISPs' availability as of June 2025).