In Alton there are 2 residential DSL providers covering 52.24% of the city. The average home can get speeds up to 26 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 Alton, NH.
To see availability maps for all providers including fiber, cable, DSL, and more in Alton, NH please click below.
DSL Internet Service Providers in Alton
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 Alton are not shown.
Alton 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 Alton is DSL internet available?
DSL Internet Availability Key
DSL is available in 52.24% of Alton. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is TDS. Call one of the companies with service in Alton above to see who has service at your home.
How fast is DSL internet in Alton?
The map below shows maximum DSL internet speeds by area in Alton.
DSL Internet Speed Key
The average Alton home can get up to 26 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 100 Mbps, which 5.41% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 39.20% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Alton.
DSL internet speeds tend to be faster in the west parts of Alton, and slower in the southwest areas of the city.
Is DSL the fastest internet I can get in Alton?
The fastest internet for you may vary based on where in Alton you live. In general, fiber competes most often with DSL in the city.
- Fiber is the fastest internet type for 92.47% of Alton homes.
- Cable is fastest for 7.21% 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 Alton homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Alton, along with details on where in Alton and at what speeds.
Fidium Fiber DSL in Alton, NH
Fidium DSL coverage
About 31.08%, or 896 people, have Fidium DSL internet available to them in the city. The company covers the southeast, southwest, northwest, central, north, northeast, and west Alton area. Fidium is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Alton.
Fidium Fiber DSL download speeds
Fidium is below average when comparing download speeds to all other internet providers in Alton. Versus other DSL providers in the area, Fidium DSL is the slowest. There are 2 different maximum speeds throughout Alton. The fastest plan anyone in Alton can order from Fidium goes up to 80 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Alton customers is up to 13 Mbps.
Show all download speeds
- 4.1% up to 80.0 Mbps
- 95.9% up to 10.0 Mbps
Fidium Fiber DSL upload speeds
In Alton download speeds tend to be faster than than upload speeds for Fidium DSL. Compared to other ISPs, Fidium is below average where upload speeds are concerned, and the slowest compared to other Alton DSL providers. Fidium offers 2 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 Alton is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Fidium customers can get speeds up to 1.8 Mbps.
Show all upload speeds
- 4.1% up to 20.0 Mbps
- 95.9% up to 1.0 Mbps
TDS DSL in Alton, NH
TDS DSL coverage
About 26.29%, or 758 people, have TDS DSL internet available to them in the city. The company covers the southwest, south, northwest, central, north, and west Alton area. TDS is a large internet service provider internet service providers in the US, with internet service available in a small portion of Alton.
TDS DSL download speeds
TDS is below average when comparing download speeds to all other internet providers in Alton. Versus other DSL providers in the area, TDS DSL is the fastest. There are 3 different maximum speeds throughout Alton. The fastest plan anyone in Alton can order from TDS goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Alton customers is up to 38 Mbps.
Show all download speeds
- 20.6% up to 100.0 Mbps
- 24.1% up to 50.0 Mbps
- 55.3% up to 10.0 Mbps
TDS DSL upload speeds
In Alton download speeds tend to be faster than than upload speeds for TDS DSL. Compared to other ISPs, TDS is below average where upload speeds are concerned, and the fastest compared to other Alton DSL providers. TDS 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 Alton is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, TDS customers can get speeds up to 6.9 Mbps.
Show all upload speeds
- 16.0% up to 20.0 Mbps
- 4.6% up to 15.0 Mbps
- 24.1% up to 10.0 Mbps
- 55.3% up to 1.0 Mbps
Alton DSL by Area
This information is most helpful to those looking for homes or considering moving to Alton or any of the areas nearby.
How does DSL internet in Alton compare to the rest of New Hampshire?
DSL internet speeds in Alton are much faster versus the average speeds in New Hampshire: 0.00 Mbps in New Hampshire versus 26 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in New Hampshire is 0.00% versus 52.24% in Alton.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Alton 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
- New Durham, NH: less DSL coverage, faster speeds
- East Alton, NH: less DSL coverage, slower speeds
- Gilmanton Iron Works, NH: more DSL coverage, faster speeds
- Center Barnstead, NH: less DSL coverage, slower speeds
- Alton Bay, NH: more DSL coverage, faster speeds
- South Wolfeboro, NH: more DSL coverage, slower speeds
- South Barnstead, NH: less DSL coverage, faster speeds
- Barnstead, NH: more DSL coverage, slower speeds
- Farmington, NH: more DSL coverage, slower speeds
- Union, NH: more DSL coverage, faster speeds
Cities with Similar Populations
- Holmes Beach, FL: less DSL coverage, slower speeds
- Harbor Beach, MI: more DSL coverage, faster speeds
- Aberdeen, ID: more DSL coverage, slower speeds
- Mannington, WV: less DSL coverage, slower speeds
- Grand Marais, MN: more DSL coverage, faster speeds
- Flandreau, SD: more DSL coverage, slower speeds
- Fort Fairfield, ME: more DSL coverage, faster speeds
- Boutte, LA: more DSL coverage, faster speeds
- Monon, IN: less DSL coverage, slower speeds
- Au Gres, MI: more DSL coverage, faster speeds