In Alta Sierra there are 3 residential DSL providers covering 54.00% of the city. The average home can get speeds up to 10 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 Alta Sierra, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Alta Sierra, CA please click below.
Alta Sierra, CA Availability Maps
DSL Internet Service Providers in Alta Sierra
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 Alta Sierra are not shown.
Alta Sierra 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 Alta Sierra is DSL internet available?
DSL Internet Availability Key
DSL is available in 54.00% of Alta Sierra. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is AT&T. Call one of the companies with service in Alta Sierra above to see who has service at your home.
How fast is DSL internet in Alta Sierra?
The map below shows maximum DSL internet speeds by area in Alta Sierra.
DSL Internet Speed Key
The average Alta Sierra home can get up to 10 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 10 Mbps, which 54.00% of residents can get.
Is DSL the fastest internet I can get in Alta Sierra?
The fastest internet for you may vary based on where in Alta Sierra you live. In general, cable competes most often with DSL in the city.
- Fiber is the fastest internet type for 6.29% of Alta Sierra homes.
- Cable is fastest for 91.05% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 2.67%.
- Satellite internet may be the only option for less than 1% of Alta Sierra homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Alta Sierra, along with details on where in Alta Sierra and at what speeds.
AT&T DSL in Alta Sierra, CA
AT&T DSL coverage
About 53.75%, or 3,872 people, have AT&T DSL internet available to them in the city. The company covers the northeast, northwest, central, south, east, west, and southeast Alta Sierra area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Alta Sierra.
AT&T DSL download speeds
AT&T is one of the slowest when comparing download speeds to all other internet providers in Alta Sierra. Versus other DSL providers in the area, AT&T DSL is one of the fastest. There are no different maximum speeds throughout Alta Sierra. The fastest plan anyone in Alta Sierra can order from AT&T goes up to 10 Mbps, and all Alta Sierra customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
AT&T DSL upload speeds
In Alta Sierra download speeds tend to be faster than than upload speeds for AT&T DSL. Compared to other ISPs, AT&T is one of the slowest where upload speeds are concerned, and one of the fastest compared to other Alta Sierra DSL providers. AT&T offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Alta Sierra is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
EarthLink DSL in Alta Sierra, CA
EarthLink DSL coverage
About 53.75%, or 3,872 people, have EarthLink DSL internet available to them in the city. The company covers the northeast, northwest, central, south, east, west, and southeast Alta Sierra area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Alta Sierra.
EarthLink DSL download speeds
EarthLink is one of the slowest when comparing download speeds to all other internet providers in Alta Sierra. Versus other DSL providers in the area, EarthLink DSL is one of the fastest. There are no different maximum speeds throughout Alta Sierra. The fastest plan anyone in Alta Sierra can order from EarthLink goes up to 10 Mbps, and all Alta Sierra customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
EarthLink DSL upload speeds
In Alta Sierra download speeds tend to be faster than than upload speeds for EarthLink DSL. Compared to other ISPs, EarthLink is one of the slowest where upload speeds are concerned, and one of the fastest compared to other Alta Sierra DSL providers. EarthLink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Alta Sierra is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
Frontier Communications DSL in Alta Sierra, CA
Frontier DSL coverage
About 2.85%, or 205 people, have Frontier DSL internet available to them in the city. The company covers the northeast and east Alta Sierra area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Alta Sierra.
Frontier Communications DSL download speeds
Frontier is one of the slowest when comparing download speeds to all other internet providers in Alta Sierra. Versus other DSL providers in the area, Frontier DSL is one of the fastest. There are no different maximum speeds throughout Alta Sierra. The fastest plan anyone in Alta Sierra can order from Frontier goes up to 10 Mbps, and all Alta Sierra customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In Alta Sierra download speeds tend to be faster than than upload speeds for Frontier DSL. Compared to other ISPs, Frontier is one of the slowest where upload speeds are concerned, and one of the fastest compared to other Alta Sierra DSL providers. Frontier offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Alta Sierra is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
Alta Sierra DSL by Area
This information is most helpful to those looking for homes or considering moving to Alta Sierra or any of the areas nearby.
How does DSL internet in Alta Sierra compare to the rest of California?
DSL internet speeds in Alta Sierra are much faster versus the average speeds in California: 0.00 Mbps in California versus 10 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in California is 0.00% versus 54.00% in Alta Sierra.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Alta Sierra 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
- Grass Valley, CA: more DSL coverage, faster speeds
- Shady Glen, CA: more DSL coverage, faster speeds
- Colfax, CA: more DSL coverage, faster speeds
- Weimar, CA: more DSL coverage, faster speeds
- Rough And Ready, CA: more DSL coverage, similar speeds
- Meadow Vista, CA: more DSL coverage, similar speeds
- Magra, CA: more DSL coverage, faster speeds
- Heather Glen, CA: less DSL coverage, faster speeds
- Penn Valley, CA: more DSL coverage, similar speeds
- Nevada City, CA: more DSL coverage, faster speeds
Cities with Similar Populations
- San Martin, CA: more DSL coverage, faster speeds
- Eureka, IL: more DSL coverage, faster speeds
- Montpelier, VA: more DSL coverage, faster speeds
- Walls, MS: more DSL coverage, faster speeds
- Hodgenville, KY: more DSL coverage, faster speeds
- Lagrangeville, NY: more DSL coverage, faster speeds
- Montague, MI: less DSL coverage, faster speeds
- Hawthorne, FL: more DSL coverage, faster speeds
- Mohave Valley, AZ: less DSL coverage, similar speeds
- Moapa Valley, NV: less DSL coverage, faster speeds