CIS 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 CIS and other ISPs.

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Jump to: Speed Benchmarks | Speed Reviews | CIS Availability

CIS Speed Benchmarks

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

CIS Internet by State

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

CIS Speed Reviews

CIS 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 CIS here.

Biggest Cities with CIS Internet Service

CIS is available in 22 cities throughout the country. Here is a list of the largest cities with CIS internet service: