Underline Internet Availability

Underline internet availability by address. Enter a zip code, city, address, or provider name below to see all providers.

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Underline Availability Maps

Underline has internet service available to less than 1% of people in the US. Among those covered, the breakdown by service type is as follows:

• Fiber internet for 100.00%
• Cable for 0.00%
• DSL for 0.00%
• Fixed wireless for 0.00%

This map illustrates Underline’s internet availability across the United States. Use the buttons at the top of the map to toggle between the different types of connections including fiber.

For more detailed comparisons and interactive maps, visit our Internet Service Providers Near You page. Alternatively, you can search by address on our Internet Service Providers by Address page, or use the search feature at the top of this page.

Underline Internet by State

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

Underline Internet Customer Reviews

Underline has 0 reviews and ratings across the United States. If you’d like to tell others about your experience, you can rate or review Underline here.

Underline’s Biggest Competitors

Underline frequently competes for customers with providers like XFINITY, Centurylink, and Verizon. Below, we offer a side-by-side comparison of these ISPs based on key metrics such as service availability, average speeds, and customer ratings.

Underline vs XFINITY
0.10% Availability Overlap
National Availability
less than 1%	35.32%
High Speed Availability
100.0% Fiber	4.0% Fiber
Average Speed
1,000 Mbps	1,783 Mbps
Starting Price
Not disclosed	From $67.00/mo
Customer Rating
(0)	(2314)

Full Comparison

Underline vs Centurylink
0.30% Availability Overlap
National Availability
less than 1%	11.33%
High Speed Availability
100.0% Fiber	18.1% Fiber
Average Speed
1,000 Mbps	237 Mbps
Starting Price
Not disclosed	From $55.00/mo
Customer Rating
(0)	(179)

Full Comparison

Underline vs Verizon
0.04% Availability Overlap
National Availability
less than 1%	78.91%
High Speed Availability
100.0% Fiber	14.7% Fiber
Average Speed
1,000 Mbps	499 Mbps
Starting Price
Not disclosed	From $49.99/mo
Customer Rating
(0)	(782)

Full Comparison

Underline competes with 15 other ISPs across the U.S., defined as any provider that competes in at least some part of Underline’s service area. On average, customers within Underline’s service area have about 7.4 alternative ISP options to choose from.

Biggest Cities with Underline Internet Service

Underline is available in 4 cities throughout the country. Here is a list of the largest cities with Underline internet service:

Underline Frequently Asked Questions

• How fast is Underline Internet?

  • The fastest available speed from Underline is 1,000 Mbps download 1,000 Mbps upload. Speed tiers start at 1,000 Mbps download and 1,000 Mbps upload for cheaper service packages.
  • The average speed most people can get from Underline is 1,000 Mbps download and 1,000 Mbps upload.
  • Have Underline and want to see what speed you get? User our Underline Speed Test tool to find out.

• Is Underline available in my area?

  • Underline is available to less than 1% of people in the United States. It is available in 1 state or territory, 4 cities, and 13 zip codes. You can use our internet providers by address or internet providers by zip code tools to see if Underline is available in your area.

• Does Underline have fiber internet?

  • 100.00% of Underline customers can subscribe to fiber internet. These customers receive an average download speed of 1,000 Mbps and average upload speed of 1,000 Mbps.

• Does Underline have cable internet?

  • Underline does not offer any Cable internet service.

• Does Underline have DSL internet?

  • Underline does not offer any DSL internet service.

• Does Underline have Fixed Wireless internet?

  • Underline does not offer any Fixed internet service.