In 58621 there are 5 residential internet providers covering 98.47% of the zip. The average home can get speeds up to 1,000 Mbps. Note that we may have a financial relationship with some of the providers below. This does not influence rankings, and helps us provide high-quality detailed information for free.
Jump to Availability Maps
5 Internet Service Providers in 58621
Data updated 11/14/2025, based on FCC data from 12/31/2024. This is the most current data available as of .
To avoid wasting your time, providers with less than 1% coverage in 58621 are not shown.
58621 Satellite TV & Internet Providers
DISH Satellite TV
DIRECTV Satellite TV
Not sure whether to choose Dish or DIRECTV? For most people most of the time we recommend DISH. But click here to learn more.
Viasat Satellite Internet
Availability maps for all providers in 58621
Using the dropdown below, please select a provider. Green indicates nearly all homes have service, red indicates few homes have service, and blank indicates no service.
Please note some providers will take longer to load than others
Internet service is available in 98.47% of 58621. Using our interactive availability map, you can compare service areas for different providers, we include fiber, cable, DSL, or fixed wireless internet service for all providers who offer it. You will notice that some providers might be listed multiple times for each service. If you find no providers cover the location you're looking at, you can opt for satellite service. The most widely available provider is RTC Networks. Now you can call companies in 58621 with more confidence that they might be available.
How fast are internet speeds in 58621?
The map below shows maximum internet speeds by area in 58621.
Internet Speed Key
The average 58621 home can get up to 1,000 Mbps on their internet plan. For most people, the fastest download speed in the zip is 1,000 Mbps, which 98.47% of residents can get.
What type of internet should I choose in 58621?
The fastest internet for you may vary based on where in 58621 you live. If speed is your main concern, fiber will be the fastest internet in the zip.
- Fiber is the fastest internet type for 98.47% of 58621 homes.
- Cable is fastest for less than 1% of the zip.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for 1.53% of 58621 homes.
Internet Market Health in 58621
Internet Competition Key
The map shows how competitive the 58621 internet service market is. Areas in green have more alternatives, areas in yellow have a few choices, and areas in red may have only one provider. More competition usually means faster speeds and better prices for you, the customer.
Below are quick facts on internet competition and market health in 58621 based on what connections the average home has availabile:
- Average number of internet service providers to a home: 2.6 (very unhealthy)
- Average types of service (fiber, cable, DSL, etc): 1.9 (very unhealthy)
- Average providers with broadband (25 Mbps+) speeds: 2.6 (very unhealthy)
Overall, competition is very unhealthy.
58621 internet customers have the ability to buy internet service from 1 to 4 different providers, depending on where they live. For different types of service, 58621 homes have between 1 and 2 options. The type(s) of service available are fiber and fixed wireless, though these may vary depending on the region within the zip.
When it comes to broadband download speeds faster than 25 Mbps, the situation is similar. 58621 internet customers who want faster speeds have between 1 and 4 choices of companies offering speeds up to or over 25 Mbps.
More internet companies with faster speeds means fewer monopolies and better prices for customers. In promoting a free market for internet, 58621 badly needs improvement.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in 58621, along with details on where in 58621 and at what speeds.
RTC Networks Fiber in 58621, ND
RTC Networks fiber coverage
About 98.47%, or 1,223 people, have RTC Networks fiber internet available to them in the zip. The company covers the entire 58621 area. RTC Networks is an average-sized internet service provider internet service providers in the US, with internet service available in most of 58621.
RTC Networks fiber download speeds
RTC Networks is the fastest when comparing download speeds to all other internet providers in 58621. Versus other fiber providers in the area, RTC Networks fiber is the fastest. There are no different maximum speeds throughout 58621. The fastest plan anyone in 58621 can order from RTC Networks goes up to 1,000 Mbps, and all 58621 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
RTC Networks fiber upload speeds
In 58621 download speeds tend to be equal to than upload speeds for RTC Networks fiber. Compared to other ISPs, RTC Networks is the fastest where upload speeds are concerned, and the fastest compared to other 58621 fiber providers. RTC Networks offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 58621 is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Verizon Fixed Wireless in 58621, ND
Verizon fixed wireless coverage
About 83.66%, or 1,039 people, have Verizon fixed wireless internet available to them in the zip. The company covers the west, south, central, southwest, northeast, southeast, north, and east 58621 area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in much of 58621.
Verizon fixed wireless download speeds
Verizon is average when comparing download speeds to all other internet providers in 58621. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout 58621. The fastest plan anyone in 58621 can order from Verizon goes up to 300 Mbps, and all 58621 customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In 58621 download speeds tend to be faster than than upload speeds for Verizon fixed wireless. Compared to other ISPs, Verizon is below average where upload speeds are concerned, and the fastest compared to other 58621 fixed wireless providers. Verizon offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 58621 is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
T-Mobile Home Internet Fixed Wireless in 58621, ND
T-Mobile Home Internet fixed wireless coverage
About 67.07%, or 833 people, have T-Mobile Home Internet fixed wireless internet available to them in the zip. The company covers the west, central, south, and southwest 58621 area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in much of 58621.
T-Mobile Home Internet fixed wireless download speeds
T-Mobile Home Internet is one of the slowest when comparing download speeds to all other internet providers in 58621. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is one of the slowest. There are no different maximum speeds throughout 58621. The fastest plan anyone in 58621 can order from T-Mobile Home Internet goes up to 25 Mbps, and all 58621 customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In 58621 download speeds tend to be faster than than upload speeds for T-Mobile Home Internet fixed wireless. Compared to other ISPs, T-Mobile Home Internet is one of the slowest where upload speeds are concerned, and one of the slowest compared to other 58621 fixed wireless providers. T-Mobile Home Internet offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 58621 is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
58621 Internet by Area
This information is most helpful to those looking for homes or considering moving to 58621 or any of the areas nearby.
How does internet in 58621 compare to the rest of North Dakota?
Internet speeds in 58621 are slower versus the average speeds in North Dakota: 2,404 Mbps in North Dakota versus 1,000 Mbps in the zip. The state has similar internet availability compared to the zip. Average internet coverage in North Dakota is 97.05% versus 98.47% in 58621.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around 58621 are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does internet service look like in other zip codes?
Below are zip codes nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Zip Codes
- 59353, MT: more internet coverage, slower speeds
- 58654, ND: less internet coverage, similar speeds
- 58645, ND: less internet coverage, similar speeds
- 58622, ND: more internet coverage, faster speeds
- 58655, ND: more internet coverage, faster speeds
- 59326, MT: less internet coverage, similar speeds
- 58601, ND: more internet coverage, faster speeds
- 59349, MT: less internet coverage, slower speeds
- 58630, ND: less internet coverage, faster speeds
- 58656, ND: less internet coverage, similar speeds
Zip Codes with Similar Populations
- 04649, ME: more internet coverage, slower speeds
- 05682, VT: more internet coverage, faster speeds
- 08319, NJ: more internet coverage, slower speeds
- 12967, NY: more internet coverage, similar speeds
- 12985, NY: more internet coverage, slower speeds
- 13464, NY: more internet coverage, similar speeds
- 15673, PA: more internet coverage, faster speeds
- 16874, PA: more internet coverage, slower speeds
- 22834, VA: more internet coverage, slower speeds
- 22935, VA: more internet coverage, similar speeds