In Discovery Bay there are 2 residential DSL providers covering 40.41% of the city. The average home can get speeds up to 80 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 Discovery Bay, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Discovery Bay, CA please click below.
Discovery Bay, CA Availability Maps
DSL Internet Service Providers in Discovery Bay
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 Discovery Bay are not shown.
Discovery Bay 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 Discovery Bay is DSL internet available?
DSL Internet Availability Key
DSL is available in 40.41% of Discovery Bay. 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 Discovery Bay above to see who has service at your home.
How fast is DSL internet in Discovery Bay?
The map below shows maximum DSL internet speeds by area in Discovery Bay.
DSL Internet Speed Key
The average Discovery Bay home can get up to 80 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 100 Mbps, which 21.41% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, less than 1% of homes can only purchase plans up to 25 Mbps. See the internet provider details below for info about their speed and coverage in Discovery Bay.
DSL internet speeds tend to be faster in the northeast parts of Discovery Bay, and slower in the southwest areas of the city.
Is DSL the fastest internet I can get in Discovery Bay?
The fastest internet for you may vary based on where in Discovery Bay you live. In general, cable competes most often with DSL in the city.
- Fiber is the fastest internet type for 9.06% of Discovery Bay homes.
- Cable is fastest for 90.26% 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 Discovery Bay homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Discovery Bay, along with details on where in Discovery Bay and at what speeds.
AT&T DSL in Discovery Bay, CA
AT&T DSL coverage
About 40.41%, or 6,329 people, have AT&T DSL internet available to them in the city. The company covers the east, central, southeast, southwest, west, south, and northeast Discovery Bay area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in some of Discovery Bay.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in Discovery Bay. Versus other DSL providers in the area, AT&T DSL is one of the fastest. There are 4 different maximum speeds throughout Discovery Bay. The fastest plan anyone in Discovery Bay can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Discovery Bay customers is up to 80 Mbps.
Show all download speeds
- 53.0% up to 100.0 Mbps
- 16.7% up to 75.0 Mbps
- 28.2% up to 50.0 Mbps
- 2.1% up to 25.0 Mbps
AT&T DSL upload speeds
In Discovery Bay 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 Discovery Bay 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 Discovery Bay is up to 20 Mbps. Some customers have slower plan choices, which only go up to 5.0 Mbps. On average, AT&T customers can get speeds up to 17 Mbps.
Show all upload speeds
- 69.7% up to 20.0 Mbps
- 28.2% up to 10.0 Mbps
- 2.1% up to 5.0 Mbps
EarthLink DSL in Discovery Bay, CA
EarthLink DSL coverage
About 40.41%, or 6,329 people, have EarthLink DSL internet available to them in the city. The company covers the east, central, southeast, southwest, west, south, and northeast Discovery Bay area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in some of Discovery Bay.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Discovery Bay. Versus other DSL providers in the area, EarthLink DSL is one of the fastest. There are 4 different maximum speeds throughout Discovery Bay. The fastest plan anyone in Discovery Bay can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Discovery Bay customers is up to 80 Mbps.
Show all download speeds
- 53.0% up to 100.0 Mbps
- 16.7% up to 75.0 Mbps
- 28.2% up to 50.0 Mbps
- 2.1% up to 25.0 Mbps
EarthLink DSL upload speeds
In Discovery Bay 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 Discovery Bay 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 Discovery Bay is up to 20 Mbps. Some customers have slower plan choices, which only go up to 5.0 Mbps. On average, EarthLink customers can get speeds up to 17 Mbps.
Show all upload speeds
- 69.7% up to 20.0 Mbps
- 28.2% up to 10.0 Mbps
- 2.1% up to 5.0 Mbps
Discovery Bay DSL by Area
This information is most helpful to those looking for homes or considering moving to Discovery Bay or any of the areas nearby.
How does DSL internet in Discovery Bay compare to the rest of California?
DSL internet speeds in Discovery Bay are much faster versus the average speeds in California: 0.00 Mbps in California versus 80 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in California is 0.00% versus 40.41% in Discovery Bay.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Discovery Bay 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
- Byron, CA: more DSL coverage, slower speeds
- Knightsen, CA: less DSL coverage, slower speeds
- Brentwood, CA: more DSL coverage, slower speeds
- Oakley, CA: more DSL coverage, slower speeds
- Bethel Island, CA: more DSL coverage, slower speeds
- Antioch, CA: more DSL coverage, slower speeds
- Country Club, CA: more DSL coverage, slower speeds
- Clayton, CA: more DSL coverage, slower speeds
- Pittsburg, CA: more DSL coverage, slower speeds
- Stockton, CA: more DSL coverage, slower speeds
Cities with Similar Populations
- La Grande, OR: less DSL coverage, slower speeds
- Key Biscayne, FL: more DSL coverage, slower speeds
- Irondale, AL: more DSL coverage, slower speeds
- Hudson, NY: less DSL coverage, slower speeds
- Hooksett, NH: more DSL coverage, slower speeds
- Rio Linda, CA: more DSL coverage, slower speeds
- Hollidaysburg, PA: less DSL coverage, slower speeds
- Heath, OH: more DSL coverage, faster speeds
- Hazel Park, MI: more DSL coverage, faster speeds
- Harriman, TN: more DSL coverage, slower speeds