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The map shows where Sierra Telephone offers DSL internet service. When different max speeds are available at different addresses within a hex, color is determined by the fastest speed.
Colored hexagons indicate where Sierra Telephone services at least one address. Internet service is not necessarily available at every location within a colored hex.
Select a city to show Sierra Telephone DSL availability in the surrounding area.
Along with DSL, Sierra Telephone also offers fiber. See Sierra Telephone Fiber Availability.
Broadband Map's information on Sierra Telephone DSL availability relies heavily on the May 2026 release from the FCC's Broadband Data Collection program (representing ISPs' availability as of December 2025).