In Los Altos there are 3 residential DSL providers covering 86.82% of the city. The average home can get speeds up to 93 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 Los Altos, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Los Altos, CA please click below.
Los Altos, CA Availability Maps
DSL Internet Service Providers in Los Altos
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 Los Altos are not shown.
Los Altos 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 Los Altos is DSL internet available?
DSL Internet Availability Key
DSL is available in 86.82% of Los Altos. 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 Los Altos above to see who has service at your home.
How fast is DSL internet in Los Altos?
The map below shows maximum DSL internet speeds by area in Los Altos.
DSL Internet Speed Key
The average Los Altos home can get up to 93 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 1,000 Mbps, which 1.78% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 3.06% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Los Altos.
DSL internet speeds tend to be faster in the north parts of Los Altos, and slower in the central areas of the city.
Is DSL the fastest internet I can get in Los Altos?
The fastest internet for you may vary based on where in Los Altos you live. In general, fiber competes most often with DSL in the city.
- Fiber is the fastest internet type for 85.36% of Los Altos homes.
- Cable is fastest for 13.54% 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 Los Altos homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Los Altos, along with details on where in Los Altos and at what speeds.
EarthLink DSL in Los Altos, CA
EarthLink DSL coverage
About 86.82%, or 33,278 people, have EarthLink DSL internet available to them in the city. The company covers the entire Los Altos area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of Los Altos.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Los Altos. Versus other DSL providers in the area, EarthLink DSL is one of the slowest. There are 5 different maximum speeds throughout Los Altos. The fastest plan anyone in Los Altos can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Los Altos customers is up to 75 Mbps.
Show all download speeds
- 48.3% up to 100.0 Mbps
- 14.9% up to 75.0 Mbps
- 25.8% up to 50.0 Mbps
- 7.5% up to 25.0 Mbps
- 3.5% up to 10.0 Mbps
EarthLink DSL upload speeds
In Los Altos 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 slowest compared to other Los Altos DSL providers. EarthLink 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 Los Altos 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 16 Mbps.
Show all upload speeds
- 63.2% up to 20.0 Mbps
- 25.8% up to 10.0 Mbps
- 7.5% up to 5.0 Mbps
- 3.5% up to 1.0 Mbps
AT&T DSL in Los Altos, CA
AT&T DSL coverage
About 86.82%, or 33,278 people, have AT&T DSL internet available to them in the city. The company covers the entire Los Altos area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of Los Altos.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in Los Altos. Versus other DSL providers in the area, AT&T DSL is one of the slowest. There are 5 different maximum speeds throughout Los Altos. The fastest plan anyone in Los Altos can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Los Altos customers is up to 75 Mbps.
Show all download speeds
- 48.3% up to 100.0 Mbps
- 14.9% up to 75.0 Mbps
- 25.8% up to 50.0 Mbps
- 7.5% up to 25.0 Mbps
- 3.5% up to 10.0 Mbps
AT&T DSL upload speeds
In Los Altos 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 slowest compared to other Los Altos DSL providers. AT&T 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 Los Altos 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 16 Mbps.
Show all upload speeds
- 63.2% up to 20.0 Mbps
- 25.8% up to 10.0 Mbps
- 7.5% up to 5.0 Mbps
- 3.5% up to 1.0 Mbps
Sail Internet DSL in Los Altos, CA
Sail Internet DSL coverage
About 1.78%, or 684 people, have Sail Internet DSL internet available to them in the city. The company covers the north Los Altos area. Sail Internet is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Los Altos.
Sail Internet DSL download speeds
Sail Internet is below average when comparing download speeds to all other internet providers in Los Altos. Versus other DSL providers in the area, Sail Internet DSL is the fastest. There are no different maximum speeds throughout Los Altos. The fastest plan anyone in Los Altos can order from Sail Internet goes up to 1,000 Mbps, and all Los Altos customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Sail Internet DSL upload speeds
In Los Altos download speeds tend to be equal to than upload speeds for Sail Internet DSL. Compared to other ISPs, Sail Internet is above average where upload speeds are concerned, and the fastest compared to other Los Altos DSL providers. Sail Internet offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Los Altos is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Los Altos DSL by Area
This information is most helpful to those looking for homes or considering moving to Los Altos or any of the areas nearby.
How does DSL internet in Los Altos compare to the rest of California?
DSL internet speeds in Los Altos are much faster versus the average speeds in California: 0.00 Mbps in California versus 93 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in California is 0.00% versus 86.82% in Los Altos.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Los Altos 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
- Mountain View, CA: more DSL coverage, faster speeds
- Los Altos Hills, CA: more DSL coverage, slower speeds
- Sunnyvale, CA: less DSL coverage, faster speeds
- Cupertino, CA: less DSL coverage, faster speeds
- Palo Alto, CA: more DSL coverage, slower speeds
- Stanford, CA: less DSL coverage, slower speeds
- Portola Valley, CA: less DSL coverage, slower speeds
- Santa Clara, CA: more DSL coverage, faster speeds
- East Palo Alto, CA: more DSL coverage, slower speeds
- Menlo Park, CA: less DSL coverage, slower speeds
Cities with Similar Populations
- Indian Trail, NC: more DSL coverage, faster speeds
- Laurel, MS: less DSL coverage, slower speeds
- Lake Wales, FL: less DSL coverage, slower speeds
- La Quinta, CA: less DSL coverage, slower speeds
- La Puente, CA: less DSL coverage, slower speeds
- Kearney, NE: less DSL coverage, slower speeds
- Jamestown, NY: more DSL coverage, slower speeds
- Huber Heights, OH: more DSL coverage, slower speeds
- Hopkinsville, KY: more DSL coverage, slower speeds
- Holiday, FL: less DSL coverage, slower speeds