In Cardiff By The Sea there are 2 residential DSL providers covering 99.65% of the city. The average home can get speeds up to 96 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 Cardiff By The Sea, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Cardiff By The Sea, CA please click below.
Cardiff By The Sea, CA Availability Maps
DSL Internet Service Providers in Cardiff By The Sea
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 Cardiff By The Sea are not shown.
Cardiff By The Sea 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 Cardiff By The Sea is DSL internet available?
DSL Internet Availability Key
DSL is available in 99.65% of Cardiff By The Sea. 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 Cardiff By The Sea above to see who has service at your home.
How fast is DSL internet in Cardiff By The Sea?
The map below shows maximum DSL internet speeds by area in Cardiff By The Sea.
DSL Internet Speed Key
The average Cardiff By The Sea home can get up to 96 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 100 Mbps, which 90.64% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 5.53% of homes can only purchase plans up to 50 Mbps. See the internet provider details below for info about their speed and coverage in Cardiff By The Sea.
DSL internet speeds tend to be faster in the central parts of Cardiff By The Sea, and slower in the north areas of the city.
Is DSL the fastest internet I can get in Cardiff By The Sea?
The fastest internet for you may vary based on where in Cardiff By The Sea you live. In general, fiber competes most often with DSL in the city.
- Fiber is the fastest internet type for 65.87% of Cardiff By The Sea homes.
- Cable is fastest for 33.78% 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 Cardiff By The Sea homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Cardiff By The Sea, along with details on where in Cardiff By The Sea and at what speeds.
AT&T DSL in Cardiff By The Sea, CA
AT&T DSL coverage
About 99.65%, or 11,472 people, have AT&T DSL internet available to them in the city. The company covers the entire Cardiff By The Sea area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of Cardiff By The Sea.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in Cardiff By The Sea. Versus other DSL providers in the area, AT&T DSL is one of the fastest. There are 3 different maximum speeds throughout Cardiff By The Sea. The fastest plan anyone in Cardiff By The Sea can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 50 Mbps, and the city-wide average maximum speed for Cardiff By The Sea customers is up to 96 Mbps.
Show all download speeds
- 91.0% up to 100.0 Mbps
- 3.5% up to 75.0 Mbps
- 5.6% up to 50.0 Mbps
AT&T DSL upload speeds
In Cardiff By The Sea 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 Cardiff By The Sea DSL providers. AT&T 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 Cardiff By The Sea is up to 20 Mbps. Some customers have slower plan choices, which only go up to 10 Mbps. On average, AT&T customers can get speeds up to 19 Mbps.
Show all upload speeds
- 94.4% up to 20.0 Mbps
- 5.6% up to 10.0 Mbps
EarthLink DSL in Cardiff By The Sea, CA
EarthLink DSL coverage
About 99.65%, or 11,472 people, have EarthLink DSL internet available to them in the city. The company covers the entire Cardiff By The Sea area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of Cardiff By The Sea.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Cardiff By The Sea. Versus other DSL providers in the area, EarthLink DSL is one of the fastest. There are 3 different maximum speeds throughout Cardiff By The Sea. The fastest plan anyone in Cardiff By The Sea can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 50 Mbps, and the city-wide average maximum speed for Cardiff By The Sea customers is up to 96 Mbps.
Show all download speeds
- 91.0% up to 100.0 Mbps
- 3.5% up to 75.0 Mbps
- 5.6% up to 50.0 Mbps
EarthLink DSL upload speeds
In Cardiff By The Sea 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 Cardiff By The Sea DSL providers. EarthLink 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 Cardiff By The Sea is up to 20 Mbps. Some customers have slower plan choices, which only go up to 10 Mbps. On average, EarthLink customers can get speeds up to 19 Mbps.
Show all upload speeds
- 94.4% up to 20.0 Mbps
- 5.6% up to 10.0 Mbps
Cardiff By The Sea DSL by Area
This information is most helpful to those looking for homes or considering moving to Cardiff By The Sea or any of the areas nearby.
How does DSL internet in Cardiff By The Sea compare to the rest of California?
DSL internet speeds in Cardiff By The Sea are much faster versus the average speeds in California: 0.00 Mbps in California versus 96 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in California is 0.00% versus 99.65% in Cardiff By The Sea.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Cardiff By The Sea 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
- Encinitas, CA: less DSL coverage, slower speeds
- Solana Beach, CA: more DSL coverage, slower speeds
- Rancho Santa Fe, CA: less DSL coverage, slower speeds
- Del Mar, CA: less DSL coverage, slower speeds
- Carlsbad, CA: less DSL coverage, slower speeds
- San Marcos, CA: less DSL coverage, slower speeds
- Sunny Vista, CA: less DSL coverage, slower speeds
- Vista, CA: less DSL coverage, slower speeds
- Escondido, CA: less DSL coverage, slower speeds
- Poway, CA: less DSL coverage, slower speeds
Cities with Similar Populations
- Wallingford, PA: less DSL coverage, slower speeds
- Cedar Hills, UT: less DSL coverage, slower speeds
- Kenai, AK: less DSL coverage, slower speeds
- Campobello, SC: less DSL coverage, faster speeds
- Camp Verde, AZ: less DSL coverage, slower speeds
- Calimesa, CA: less DSL coverage, slower speeds
- Cahokia, IL: less DSL coverage, slower speeds
- Burkburnett, TX: less DSL coverage, slower speeds
- Brownsville, TN: less DSL coverage, slower speeds
- Brookings, OR: less DSL coverage, slower speeds