Underline Availability Map

Underline Availability Map. Click for interactive map

Underline Plans and Pricing

These are a handful of the plans we found for Underline. To see more Underline deals and offers in your area enter your zip code above.

  • Free installation.

    Download speeds up to: 300 Mbps

    $30/month

    • Fiber
    Show Details
    • Connection: Fiber
    • Data: No Caps
  • Free installation.

    Download speeds up to: 500 Mbps

    $49/month

    • Fiber
    Show Details
    • Connection: Fiber
    • Data: No Caps
  • 2 months free | Free installation.

    Download speeds up to: 1 Gbps

    $65/month

    • Fiber
    Show Details
    • Connection: Fiber
    • Data: No Caps

Underline Availability by State
Fiber Colorado 136,259 1 Gbps

Cities and Towns With Coverage

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Underline Internet Customer Reviews

Customer Reviews and Feedback

Leave a review for Underline Internet

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About Our Underline Speed Test Tool

Whether Underline is your internet provider or you use a different provider, the speed test below can show key statistics about your internet connection.

This speed test will assess the quality of your broadband connection whether you use Underline or another provider. The dials above are designed to return results on download and upload throughput. Download and upload rates are the primary signs of broadband internet robustness. As of January 2022, the national average download speed for Underline is 0 Mbps. Throughout their footprint, the average latency on Underline Internet speed tests is 0ms. In context, wired Internet connections generally have latency in the 5–70ms range. Satellite broadband connections, in contrast, are often closer to 500–800ms.

Download Speed and Latency Test

Speed Test

Get a precise, real-time read of your speed with this simple test, it can measure the performance of your connection regardless of who is your current internet provider. The BroadbandNow team recommends consumers regularly check their internet's performance as it fluctuates regularly and can identify when you need service support or when your household's usage exceeds your current plan's capability

Note: This speed test can be used to test any internet provider, not just Underline .

If your Underline speed test result is lower than expected, try resetting your router or call Underline customer service for additional assistance.

Underline Internet Speed Data

1 GBPS

Maximum Advertised Download Mbps

Underline Fastest Download Speeds Over Time

In this chart we've calculated the average speed of the fastest 10% of users who ran a speed test from a Underline connection in the last 12 months.

Underline Average Download Speeds Over Time

In this chart we show the average download speed across all 0 users who ran a speed test on their Underline internet connection in the last 12 months.