In 94523 there are 3 residential DSL providers covering 91.06% of the zip. The average home can get speeds up to 159 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 94523, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in 94523, CA please click below.
DSL Internet Service Providers in 94523
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 94523 are not shown.
94523 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 94523 is DSL internet available?
DSL Internet Availability Key
DSL is available in 91.06% of 94523. 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 94523 above to see who has service at your home.
How fast is DSL internet in 94523?
The map below shows maximum DSL internet speeds by area in 94523.
DSL Internet Speed Key
The average 94523 home can get up to 159 Mbps on their DSL internet plan. The fastest DSL download speed in the zip is 1,000 Mbps, which 6.72% 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 94523.
DSL internet speeds tend to be faster in the northwest parts of 94523, and slower in the southeast areas of the zip.
Is DSL the fastest internet I can get in 94523?
The fastest internet for you may vary based on where in 94523 you live. In general, cable competes most often with DSL in the zip.
- Fiber is the fastest internet type for 41.21% of 94523 homes.
- Cable is fastest for 58.57% of the zip.
- 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 94523 homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in 94523, along with details on where in 94523 and at what speeds.
AT&T DSL in 94523, CA
AT&T DSL coverage
About 90.41%, or 31,391 people, have AT&T DSL internet available to them in the zip. The company covers the entire 94523 area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of 94523.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in 94523. Versus other DSL providers in the area, AT&T DSL is one of the slowest. There are 4 different maximum speeds throughout 94523. The fastest plan anyone in 94523 can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the zip-wide average maximum speed for 94523 customers is up to 92 Mbps.
Show all download speeds
- 79.5% up to 100.0 Mbps
- 8.9% up to 75.0 Mbps
- 10.6% up to 50.0 Mbps
- 1.0% up to 25.0 Mbps
AT&T DSL upload speeds
In 94523 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 94523 DSL providers. AT&T offers 3 different upload speeds across the zip, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in 94523 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 19 Mbps.
Show all upload speeds
- 88.5% up to 20.0 Mbps
- 10.6% up to 10.0 Mbps
- 1.0% up to 5.0 Mbps
EarthLink DSL in 94523, CA
EarthLink DSL coverage
About 90.41%, or 31,391 people, have EarthLink DSL internet available to them in the zip. The company covers the entire 94523 area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of 94523.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in 94523. Versus other DSL providers in the area, EarthLink DSL is one of the slowest. There are 4 different maximum speeds throughout 94523. The fastest plan anyone in 94523 can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the zip-wide average maximum speed for 94523 customers is up to 92 Mbps.
Show all download speeds
- 79.5% up to 100.0 Mbps
- 8.9% up to 75.0 Mbps
- 10.6% up to 50.0 Mbps
- 1.0% up to 25.0 Mbps
EarthLink DSL upload speeds
In 94523 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 94523 DSL providers. EarthLink offers 3 different upload speeds across the zip, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in 94523 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 19 Mbps.
Show all upload speeds
- 88.5% up to 20.0 Mbps
- 10.6% up to 10.0 Mbps
- 1.0% up to 5.0 Mbps
Astound Broadband DSL in 94523, CA
Astound Broadband DSL coverage
About 6.72%, or 2,334 people, have Astound Broadband DSL internet available to them in the zip. The company covers the northwest, south, central, east, northeast, and southwest 94523 area. Astound Broadband is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of 94523.
Astound Broadband DSL download speeds
Astound Broadband is below average when comparing download speeds to all other internet providers in 94523. Versus other DSL providers in the area, Astound Broadband DSL is the fastest. There are no different maximum speeds throughout 94523. The fastest plan anyone in 94523 can order from Astound Broadband goes up to 1,000 Mbps, and all 94523 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Astound Broadband DSL upload speeds
In 94523 download speeds tend to be faster than than upload speeds for Astound Broadband DSL. Compared to other ISPs, Astound Broadband is below average where upload speeds are concerned, and the slowest compared to other 94523 DSL providers. Astound Broadband offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 94523 is up to 10 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 10.0 Mbps
94523 DSL by Area
This information is most helpful to those looking for homes or considering moving to 94523 or any of the areas nearby.
How does DSL internet in 94523 compare to the rest of California?
DSL internet speeds in 94523 are much faster versus the average speeds in California: 0.00 Mbps in California versus 159 Mbps in the zip. The state has similar DSL availability compared to the zip. Average DSL coverage in California is 0.00% versus 91.06% in 94523.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around 94523 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 zip codes?
Below are zip codes nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Zip Codes
- 94597, CA: more DSL coverage, slower speeds
- 94520, CA: more DSL coverage, faster speeds
- 94518, CA: more DSL coverage, faster speeds
- 94553, CA: less DSL coverage, slower speeds
- 94598, CA: more DSL coverage, faster speeds
- 94519, CA: less DSL coverage, slower speeds
- 94596, CA: more DSL coverage, faster speeds
- 94549, CA: less DSL coverage, slower speeds
- 94521, CA: less DSL coverage, faster speeds
- 94595, CA: less DSL coverage, faster speeds
Zip Codes with Similar Populations
- 30344, GA: less DSL coverage, slower speeds
- 56601, MN: less DSL coverage, slower speeds
- 55433, MN: more DSL coverage, slower speeds
- 55109, MN: more DSL coverage, slower speeds
- 46217, IN: less DSL coverage, slower speeds
- 27527, NC: less DSL coverage, slower speeds
- 13027, NY: less DSL coverage, slower speeds
- 85048, AZ: more DSL coverage, slower speeds
- 77087, TX: less DSL coverage, slower speeds
- 85704, AZ: more DSL coverage, slower speeds