In Sun Prairie there are 3 residential DSL providers covering 67.07% of the city. The average home can get speeds up to 22 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.
This page contains all DSL internet providers in Sun Prairie, WI.
To see availability maps for all providers including fiber, cable, DSL, and more in Sun Prairie, WI please click below.
Sun Prairie, WI Availability Maps
DSL Internet Service Providers in Sun Prairie
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 Sun Prairie are not shown.
Sun Prairie 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
Where in Sun Prairie is DSL internet available?
DSL Internet Availability Key
DSL is available in 67.07% of Sun Prairie. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is Frontier. Call one of the companies with service in Sun Prairie above to see who has service at your home.
How fast is DSL internet in Sun Prairie?
The map below shows maximum DSL internet speeds by area in Sun Prairie.
DSL Internet Speed Key
The average Sun Prairie home can get up to 22 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 115 Mbps, which 1.31% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 55.12% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Sun Prairie.
DSL internet speeds tend to be faster in the southwest parts of Sun Prairie, and slower in the north areas of the city.
Is DSL the fastest internet I can get in Sun Prairie?
The fastest internet for you may vary based on where in Sun Prairie you live. In general, fiber competes most often with DSL in the city.
- Fiber is the fastest internet type for 92.52% of Sun Prairie homes.
- Cable is fastest for 6.92% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for less than 1% of Sun Prairie homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Sun Prairie, along with details on where in Sun Prairie and at what speeds.
Frontier Communications DSL in Sun Prairie, WI
Frontier DSL coverage
About 66.78%, or 29,163 people, have Frontier DSL internet available to them in the city. The company covers the entire Sun Prairie area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in much of Sun Prairie.
Frontier Communications DSL download speeds
Frontier is the slowest when comparing download speeds to all other internet providers in Sun Prairie. Versus other DSL providers in the area, Frontier DSL is the slowest. There are 5 different maximum speeds throughout Sun Prairie. The fastest plan anyone in Sun Prairie can order from Frontier goes up to 115 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Sun Prairie customers is up to 20 Mbps.
Show all download speeds
- 2.0% up to 115.0 Mbps
- 4.1% up to 90.0 Mbps
- 6.9% up to 70.0 Mbps
- 2.3% up to 45.0 Mbps
- 84.7% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In Sun Prairie download speeds tend to be faster than than upload speeds for Frontier DSL. Compared to other ISPs, Frontier is the slowest where upload speeds are concerned, and the slowest compared to other Sun Prairie DSL providers. Frontier offers 4 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Sun Prairie is up to 7.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Frontier customers can get speeds up to 1.5 Mbps.
Show all upload speeds
- 2.0% up to 7.0 Mbps
- 4.1% up to 5.0 Mbps
- 9.2% up to 3.0 Mbps
- 84.7% up to 1.0 Mbps
AT&T DSL in Sun Prairie, WI
AT&T DSL coverage
About 1.74%, or 759 people, have AT&T DSL internet available to them in the city. The company covers the southwest and south Sun Prairie area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Sun Prairie.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in Sun Prairie. Versus other DSL providers in the area, AT&T DSL is one of the fastest. There are 3 different maximum speeds throughout Sun Prairie. The fastest plan anyone in Sun Prairie can order from AT&T goes up to 75 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Sun Prairie customers is up to 69 Mbps.
Show all download speeds
- 89.2% up to 75.0 Mbps
- 5.1% up to 25.0 Mbps
- 5.7% up to 10.0 Mbps
AT&T DSL upload speeds
In Sun Prairie download speeds tend to be faster than than upload speeds for AT&T DSL. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and one of the fastest compared to other Sun Prairie DSL providers. AT&T offers 3 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Sun Prairie is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, AT&T customers can get speeds up to 18 Mbps.
Show all upload speeds
- 89.2% up to 20.0 Mbps
- 5.1% up to 5.0 Mbps
- 5.7% up to 1.0 Mbps
EarthLink DSL in Sun Prairie, WI
EarthLink DSL coverage
About 1.74%, or 759 people, have EarthLink DSL internet available to them in the city. The company covers the southwest and south Sun Prairie area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Sun Prairie.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Sun Prairie. Versus other DSL providers in the area, EarthLink DSL is one of the fastest. There are 3 different maximum speeds throughout Sun Prairie. The fastest plan anyone in Sun Prairie can order from EarthLink goes up to 75 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Sun Prairie customers is up to 69 Mbps.
Show all download speeds
- 89.2% up to 75.0 Mbps
- 5.1% up to 25.0 Mbps
- 5.7% up to 10.0 Mbps
EarthLink DSL upload speeds
In Sun Prairie download speeds tend to be faster than than upload speeds for EarthLink DSL. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and one of the fastest compared to other Sun Prairie DSL providers. EarthLink offers 3 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Sun Prairie is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, EarthLink customers can get speeds up to 18 Mbps.
Show all upload speeds
- 89.2% up to 20.0 Mbps
- 5.1% up to 5.0 Mbps
- 5.7% up to 1.0 Mbps
Sun Prairie DSL by Area
This information is most helpful to those looking for homes or considering moving to Sun Prairie or any of the areas nearby.
How does DSL internet in Sun Prairie compare to the rest of Wisconsin?
DSL internet speeds in Sun Prairie are much faster versus the average speeds in Wisconsin: 0.00 Mbps in Wisconsin versus 22 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in Wisconsin is 0.00% versus 67.07% in Sun Prairie.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Sun Prairie are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does DSL internet look like in other cities?
Below are cities nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Cities
- Windsor, WI: more DSL coverage, faster speeds
- DeForest, WI: more DSL coverage, faster speeds
- North Bristol, WI: more DSL coverage, faster speeds
- Cottage Grove, WI: more DSL coverage, slower speeds
- Marshall, WI: more DSL coverage, faster speeds
- Morrisonville, WI: more DSL coverage, slower speeds
- Maple Bluff, WI: more DSL coverage, faster speeds
- York Center, WI: less DSL coverage, faster speeds
- Nora, WI: more DSL coverage, faster speeds
- Norway Grove, WI: more DSL coverage, faster speeds
Cities with Similar Populations
- Belleville, MI: more DSL coverage, faster speeds
- Buda, TX: less DSL coverage, slower speeds
- Bullhead City, AZ: more DSL coverage, slower speeds
- Burlington, VT: more DSL coverage, faster speeds
- Chatsworth, CA: more DSL coverage, faster speeds
- Clovis, NM: more DSL coverage, faster speeds
- Eagle Mountain, UT: less DSL coverage, faster speeds
- Stanton, CA: less DSL coverage, faster speeds
- San Bruno, CA: more DSL coverage, faster speeds
- Vestavia Hills, AL: more DSL coverage, faster speeds