In Centennial there are 3 residential DSL providers covering 88.37% of the neighborhood. The average home can get speeds up to 177 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 Centennial, Redwood City, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Centennial, Redwood City, CA please click below.
Centennial, Redwood City, CA Availability Maps
DSL Internet Service Providers in Centennial
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 Centennial are not shown.
Centennial 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 Centennial is DSL internet available?
DSL Internet Availability Key
DSL is available in 88.37% of Centennial. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is Astound Broadband. Call one of the companies with service in Centennial above to see who has service at your home.
How fast is DSL internet in Centennial?
The map below shows maximum DSL internet speeds by area in Centennial.
DSL Internet Speed Key
The average Centennial home can get up to 177 Mbps on their DSL internet plan. The fastest DSL download speed in the neighborhood is 1,000 Mbps, which 12.01% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 37.85% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Centennial.
DSL internet speeds tend to be faster in the southeast parts of Centennial, and slower in the east areas of the neighborhood.
Is DSL the fastest internet I can get in Centennial?
The fastest internet for you may vary based on where in Centennial you live. In general, fiber competes most often with DSL in the neighborhood.
- Fiber is the fastest internet type for 65.81% of Centennial homes.
- Cable is fastest for 34.19% of the neighborhood.
- 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 Centennial homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Centennial, along with details on where in Centennial and at what speeds.
AT&T DSL in Centennial, Redwood City, CA
AT&T DSL coverage
About 88.37%, or 6,108 people, have AT&T DSL internet available to them in the neighborhood. The company covers the entire Centennial area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of Centennial.
AT&T DSL download speeds
AT&T is one of the slowest when comparing download speeds to all other internet providers in Centennial. Versus other DSL providers in the area, AT&T DSL is one of the slowest. There are 5 different maximum speeds throughout Centennial. The fastest plan anyone in Centennial can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the neighborhood-wide average maximum speed for Centennial customers is up to 45 Mbps.
Show all download speeds
- 32.9% up to 100.0 Mbps
- 1.7% up to 75.0 Mbps
- 8.8% up to 50.0 Mbps
- 6.0% up to 25.0 Mbps
- 50.6% up to 10.0 Mbps
AT&T DSL upload speeds
In Centennial 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 slowest compared to other Centennial DSL providers. AT&T offers 4 different upload speeds across the neighborhood, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Centennial 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 8.6 Mbps.
Show all upload speeds
- 34.6% up to 20.0 Mbps
- 8.8% up to 10.0 Mbps
- 6.0% up to 5.0 Mbps
- 50.6% up to 1.0 Mbps
EarthLink DSL in Centennial, Redwood City, CA
EarthLink DSL coverage
About 88.37%, or 6,108 people, have EarthLink DSL internet available to them in the neighborhood. The company covers the entire Centennial area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of Centennial.
EarthLink DSL download speeds
EarthLink is one of the slowest when comparing download speeds to all other internet providers in Centennial. Versus other DSL providers in the area, EarthLink DSL is one of the slowest. There are 5 different maximum speeds throughout Centennial. The fastest plan anyone in Centennial can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the neighborhood-wide average maximum speed for Centennial customers is up to 45 Mbps.
Show all download speeds
- 32.9% up to 100.0 Mbps
- 1.7% up to 75.0 Mbps
- 8.8% up to 50.0 Mbps
- 6.0% up to 25.0 Mbps
- 50.6% up to 10.0 Mbps
EarthLink DSL upload speeds
In Centennial 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 slowest compared to other Centennial DSL providers. EarthLink offers 4 different upload speeds across the neighborhood, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Centennial 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 8.6 Mbps.
Show all upload speeds
- 34.6% up to 20.0 Mbps
- 8.8% up to 10.0 Mbps
- 6.0% up to 5.0 Mbps
- 50.6% up to 1.0 Mbps
Astound Broadband DSL in Centennial, Redwood City, CA
Astound Broadband DSL coverage
About 12.01%, or 830 people, have Astound Broadband DSL internet available to them in the neighborhood. The company covers the southeast, central, south, and west Centennial 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 Centennial.
Astound Broadband DSL download speeds
Astound Broadband is below average when comparing download speeds to all other internet providers in Centennial. Versus other DSL providers in the area, Astound Broadband DSL is the fastest. There are no different maximum speeds throughout Centennial. The fastest plan anyone in Centennial can order from Astound Broadband goes up to 1,000 Mbps, and all Centennial customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Astound Broadband DSL upload speeds
In Centennial 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 fastest compared to other Centennial DSL providers. Astound Broadband offers no different upload speeds across the neighborhood. The fastest upload speed available to anyone from this ISP in Centennial is up to 10 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 10.0 Mbps
Centennial DSL by Area
This information is most helpful to those looking for homes or considering moving to Centennial or any of the areas nearby.
How does DSL internet in Centennial compare to the rest of Redwood City?
DSL internet speeds in Centennial are much faster versus the average speeds in Redwood City: 0.00 Mbps in Redwood City versus 177 Mbps in the neighborhood. The city has similar DSL availability compared to the neighborhood. Average DSL coverage in Redwood City is 0.00% versus 88.37% in Centennial.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Centennial 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 neighborhoods?
Below are neighborhoods nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Neighborhoods
- Staumbaugh Heller, Redwood City, CA: more DSL coverage, slower speeds
- Roosevelt-San Francisco, Redwood City, CA: less DSL coverage, slower speeds
- Redwood Village, Redwood City, CA: more DSL coverage, faster speeds
- Fair Oaks, North Fair Oaks, CA: more DSL coverage, slower speeds
- Friendly Acres, Redwood City, CA: more DSL coverage, slower speeds
- Emerald Lake Hills, Redwood City, CA: less DSL coverage, slower speeds
- Farm Hills, Redwood City, CA: less DSL coverage, slower speeds
- West Atherton, Atherton, CA: less DSL coverage, slower speeds
- Downtown Menlo Park, Menlo Park, CA: more DSL coverage, slower speeds
- Belle Haven, Menlo Park, CA: more DSL coverage, slower speeds
Neighborhoods with Similar Populations
- West Waco, Woodway, TX: less DSL coverage, slower speeds
- West Memorial, Katy, TX: less DSL coverage, slower speeds
- Bridgetown North, Cincinnati, OH: less DSL coverage, slower speeds
- Machuchal, San Juan, PR: less DSL coverage, slower speeds
- Northwest, Garden City, ID: more DSL coverage, slower speeds
- North Main, Greenville, SC: less DSL coverage, slower speeds
- North East, Pasadena, CA: less DSL coverage, slower speeds
- Natomas Corporate Center, Sacramento, CA: more DSL coverage, slower speeds
- Amphi, Tucson, AZ: more DSL coverage, slower speeds
- Logan, Ann Arbor, MI: less DSL coverage, slower speeds