Sebastian Speed Test

Maintained by:Carson WardData & methodology:Wes WardLast updated:{{date_modified_text}}January 31, 2026

Enter a zip code, city, or address below to see what speeds you can expect in your location for Sebastian and other ISPs.

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Jump to: Speed Benchmarks | Speed Reviews | Sebastian Availability

Sebastian Speed Benchmarks

Here’s how your result stacks up against Sebastian's benchmarks: fastest available speeds reach 1,000 Mbps down / 1,000 Mbps up. Across Sebastian’s footprint, typical available speeds average 663 Mbps down / 632 Mbps up.

Sebastian Internet by State

This map highlights Sebastian coverage and speeds by state, Sebastian has the biggest presence in California. Hover over each state to see Sebastian availability by connection type, and click on a state to see all providers in that state.

Sebastian Speed Reviews

Sebastian has an overall rating of out of 5, with a total of 0 reviews and ratings across the United States. Speed ratings by service type include: Fiber: not been rated by customers yet, Cable: not been rated by customers yet, DSL: not been rated by customers yet, Fixed Wireless: not been rated by customers yet. If you'd like to tell others about your experience, you can rate or review Sebastian here.

Biggest Cities with Sebastian Internet Service

Sebastian is available in 20 cities throughout the country. Here is a list of the largest cities with Sebastian internet service: