In Sunnyvale there are 3 residential DSL providers covering 85.23% of the city. The average home can get speeds up to 99 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 Sunnyvale, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Sunnyvale, CA please click below.
Sunnyvale, CA Availability Maps
DSL Internet Service Providers in Sunnyvale
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 Sunnyvale are not shown.
Sunnyvale 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 Sunnyvale is DSL internet available?
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DSL is available in 85.23% of Sunnyvale. 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 Sunnyvale above to see who has service at your home.
How fast is DSL internet in Sunnyvale?
The map below shows maximum DSL internet speeds by area in Sunnyvale.
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The average Sunnyvale home can get up to 99 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 1,000 Mbps, which 1.76% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 3.73% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Sunnyvale.
DSL internet speeds tend to be faster in the central parts of Sunnyvale, and slower in the northeast areas of the city.
Is DSL the fastest internet I can get in Sunnyvale?
The fastest internet for you may vary based on where in Sunnyvale you live. In general, cable competes most often with DSL in the city.
- Fiber is the fastest internet type for 43.98% of Sunnyvale homes.
- Cable is fastest for 54.97% 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 Sunnyvale homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Sunnyvale, along with details on where in Sunnyvale and at what speeds.
EarthLink DSL in Sunnyvale, CA
EarthLink DSL coverage
About 84.97%, or 129,929 people, have EarthLink DSL internet available to them in the city. The company covers the entire Sunnyvale area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in much of Sunnyvale.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Sunnyvale. Versus other DSL providers in the area, EarthLink DSL is one of the slowest. There are 5 different maximum speeds throughout Sunnyvale. The fastest plan anyone in Sunnyvale 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 Sunnyvale customers is up to 79 Mbps.
Show all download speeds
- 58.8% up to 100.0 Mbps
- 14.0% up to 75.0 Mbps
- 16.2% up to 50.0 Mbps
- 6.2% up to 25.0 Mbps
- 4.8% up to 10.0 Mbps
EarthLink DSL upload speeds
In Sunnyvale 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 Sunnyvale 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 Sunnyvale 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 17 Mbps.
Show all upload speeds
- 72.8% up to 20.0 Mbps
- 16.2% up to 10.0 Mbps
- 6.2% up to 5.0 Mbps
- 4.8% up to 1.0 Mbps
AT&T DSL in Sunnyvale, CA
AT&T DSL coverage
About 84.97%, or 129,929 people, have AT&T DSL internet available to them in the city. The company covers the entire Sunnyvale area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in much of Sunnyvale.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in Sunnyvale. Versus other DSL providers in the area, AT&T DSL is one of the slowest. There are 5 different maximum speeds throughout Sunnyvale. The fastest plan anyone in Sunnyvale 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 Sunnyvale customers is up to 79 Mbps.
Show all download speeds
- 58.8% up to 100.0 Mbps
- 14.0% up to 75.0 Mbps
- 16.2% up to 50.0 Mbps
- 6.2% up to 25.0 Mbps
- 4.8% up to 10.0 Mbps
AT&T DSL upload speeds
In Sunnyvale 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 Sunnyvale 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 Sunnyvale 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 17 Mbps.
Show all upload speeds
- 72.8% up to 20.0 Mbps
- 16.2% up to 10.0 Mbps
- 6.2% up to 5.0 Mbps
- 4.8% up to 1.0 Mbps
Sail Internet DSL in Sunnyvale, CA
Sail Internet DSL coverage
About 2.34%, or 3,571 people, have Sail Internet DSL internet available to them in the city. The company covers the central, north, west, northeast, southwest, and east Sunnyvale 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 Sunnyvale.
Sail Internet DSL download speeds
Sail Internet is below average when comparing download speeds to all other internet providers in Sunnyvale. Versus other DSL providers in the area, Sail Internet DSL is the fastest. There are 2 different maximum speeds throughout Sunnyvale. The fastest plan anyone in Sunnyvale can order from Sail Internet goes up to 1,000 Mbps, the slowest package only goes up to 200 Mbps, and the city-wide average maximum speed for Sunnyvale customers is up to 804 Mbps.
Show all download speeds
- 75.5% up to 1,000.0 Mbps
- 24.5% up to 200.0 Mbps
Sail Internet DSL upload speeds
In Sunnyvale download speeds tend to be faster than 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 Sunnyvale DSL providers. Sail Internet 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 Sunnyvale is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 100 Mbps. On average, Sail Internet customers can get speeds up to 779 Mbps.
Show all upload speeds
- 75.5% up to 1,000.0 Mbps
- 24.5% up to 100.0 Mbps
Sunnyvale DSL by Area
This information is most helpful to those looking for homes or considering moving to Sunnyvale or any of the areas nearby.
How does DSL internet in Sunnyvale compare to the rest of California?
DSL internet speeds in Sunnyvale are much faster versus the average speeds in California: 0.00 Mbps in California versus 99 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in California is 0.00% versus 85.23% in Sunnyvale.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Sunnyvale 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
- Santa Clara, CA: more DSL coverage, faster speeds
- Mountain View, CA: more DSL coverage, faster speeds
- Cupertino, CA: more DSL coverage, faster speeds
- Los Altos, CA: more DSL coverage, slower speeds
- Alviso, CA: less DSL coverage, slower speeds
- Los Altos Hills, CA: more DSL coverage, slower speeds
- Saratoga, CA: more DSL coverage, slower speeds
- Campbell, CA: less DSL coverage, slower speeds
- Palo Alto, CA: more DSL coverage, slower speeds
- Milpitas, CA: more DSL coverage, faster speeds
Cities with Similar Populations
- Ewa Beach, HI: less DSL coverage, slower speeds
- Evansville, IN: less DSL coverage, slower speeds
- Englewood, CO: less DSL coverage, slower speeds
- Farmington Hills, MI: more DSL coverage, slower speeds
- Evanston, IL: more DSL coverage, slower speeds
- Enterprise, NV: more DSL coverage, slower speeds
- Everett, WA: less DSL coverage, slower speeds
- Fairfield, CA: more DSL coverage, slower speeds
- Escondido, CA: more DSL coverage, slower speeds
- Eugene, OR: more DSL coverage, slower speeds