CSI Internet Availability
CSI internet availability by address. Enter a zip code, city, or address below to see all providers.
Jump to: Availability Maps| Plans & Pricing | Customer Reviews | Biggest Competitors| FAQ| Business Internet
CSI a regional internet service provider, operating in 1 state or territory covering 21,847 people, and offering speeds over 1,000 Mbps to 0.00% of those people. CSI offers cable connections, explore our comprehensive and frequently updated availability maps below.CSI Availability Maps
CSI has internet service available to less than 1% of people in the US. Among those covered, the breakdown by service type is as follows:
- Cable for 100.00%
This map illustrates CSI’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 cable.
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.
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
CSI Internet Plans & Pricing
| Plan | Monthly Price | Typical Download Speed | Typical Upload Speed | Connection Type |
|---|---|---|---|---|
| Starting At | $36.99 | 150 Mbps | 15 Mbps | Cable |
Note: These provider-reported typical speeds reflect plan-specific expectations, while speed metrics elsewhere on our site measure maximum available performance across areas.
CSI Internet by State
This map highlights CSI coverage and speeds by state, CSI has the biggest presence in North Dakota. Hover over each state to see CSI availability by connection type, and click on a state to see all providers in that state.
CSI Internet Customer Reviews
CSI has 2 reviews and ratings across the United States. If you’d like to tell others about your experience, you can rate or review CSI here.
For detailed reviews, visit our CSI Internet Reviews page.
CSI’s Biggest Competitors
CSI frequently competes for customers with providers like Centurylink, T-Mobile Home Internet, 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.
| CSI vs Centurylink | |
|---|---|
| 0.05% Availability Overlap | |
 |
 |
| National Availability | |
| less than 1% | 11.60% |
| High Speed Availability | |
| 100.0% Cable | 18.5% Fiber |
| Average Speed | |
| 150 Mbps | 238 Mbps |
| Starting Price | |
| Not disclosed | From $55.00/mo |
| Customer Rating | |
 (2) |
 (170) |
| CSI vs T-Mobile Home Internet | |
|---|---|
| 0.01% Availability Overlap | |
|
 |
| National Availability | |
| less than 1% | 85.72% |
| High Speed Availability | |
| 100.0% Cable | 0.0% Fiber |
| Average Speed | |
| 150 Mbps | 65 Mbps |
| Starting Price | |
| Not disclosed | From $50.00/mo |
| Customer Rating | |
| (2) |
 (297) |
| CSI vs Verizon | |
|---|---|
| 0.01% Availability Overlap | |
|
 |
| National Availability | |
| less than 1% | 63.18% |
| High Speed Availability | |
| 100.0% Cable | 18.5% Fiber |
| Average Speed | |
| 150 Mbps | 559 Mbps |
| Starting Price | |
| Not disclosed | From $49.99/mo |
| Customer Rating | |
| (2) |
(743) |
CSI competes with 8 other ISPs across the U.S., defined as any provider that competes in at least some part of CSI’s service area. On average, customers within CSI’s service area have about 6.0 alternative ISP options to choose from.
Biggest Cities with CSI Internet Service
CSI is available in 3 cities throughout the country. Here is a list of the largest cities with CSI internet service:
Jamestown, ND
- Availability: 89.03%
- Avg. Download Speed: 150 Mbps
Valley City, ND
- Availability: 83.91%
- Avg. Download Speed: 150 Mbps
Spiritwood, ND
- Availability: 36.51%
- Avg. Download Speed: 150 Mbps
CSI Frequently Asked Questions
-
How fast is CSI Internet?
- The fastest available speed from CSI is 150 Mbps download 15 Mbps upload. Speed tiers start at 150 Mbps download and 15 Mbps upload for cheaper service packages.
- The average speed most people can get from CSI is 150 Mbps download and 15 Mbps upload.
- Have CSI and want to see what speed you get? User our CSI Speed Test tool to find out.
-
Is CSI available in my area?
- CSI is available to less than 1% of people in the United States. It is available in 1 state or territory, 3 cities, and 3 zip codes. You can use our internet providers by address or internet providers by zip code tools to see if CSI is available in your area.
-
Does CSI have fiber internet?
- CSI does not offer any fiber internet service.
-
Does CSI have cable internet?
- 100.00% of CSI customers can subscribe to cable internet. These customers receive an average download speed of 150 Mbps and average upload speed of 15 Mbps.
-
Does CSI have DSL internet?
- CSI does not offer any DSL internet service.
-
Does CSI have Fixed Wireless internet?
- CSI does not offer any Fixed internet service.