In Cardiff By The Sea there are 10 residential internet providers covering 99.95% of the city. The average home can get speeds up to 3,722 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.
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10 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
Availability maps for all providers in Cardiff By The Sea
Using the dropdown below, please select a provider. Green indicates nearly all homes have service, red indicates few homes have service, and blank indicates no service.
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Internet service is available in 99.95% of Cardiff By The Sea. Using our interactive availability map, you can compare service areas for different providers, we include fiber, cable, DSL, or fixed wireless internet service for all providers who offer it. You will notice that some providers might be listed multiple times for each service. If you find no providers cover the location you're looking at, you can opt for satellite service. The most widely available provider is AT&T. Now you can call companies in Cardiff By The Sea with more confidence that they might be available.
How fast are internet speeds in Cardiff By The Sea?
The map below shows maximum internet speeds by area in Cardiff By The Sea.
Internet Speed Key
The average Cardiff By The Sea home can get up to 3,722 Mbps on their internet plan. For most people, the fastest download speed in the city is 5,000 Mbps, which 60.35% 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 Cardiff By The Sea.
Internet speeds tend to be faster in the southwest parts of Cardiff By The Sea, and slower in the northeast areas of the city.
What type of internet should I choose in Cardiff By The Sea?
The fastest internet for you may vary based on where in Cardiff By The Sea you live. If speed is your main concern, fiber will be the fastest internet 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.
Internet Market Health in Cardiff By The Sea
Internet Competition Key
The map shows how competitive the Cardiff By The Sea internet service market is. Areas in green have more alternatives, areas in yellow have a few choices, and areas in red may have only one provider. More competition usually means faster speeds and better prices for you, the customer.
Below are quick facts on internet competition and market health in Cardiff By The Sea based on what connections the average home has availabile:
- Average number of internet service providers to a home: 9.2 (very healthy)
- Average types of service (fiber, cable, DSL, etc): 4.0 (very healthy)
- Average providers with broadband (25 Mbps+) speeds: 9.2 (very healthy)
Overall, competition is very healthy.
Cardiff By The Sea internet customers have the ability to buy internet service from 2 to 12 different providers, depending on where they live. For different types of service, Cardiff By The Sea homes have between 1 and 4 options. The type(s) of service available are fixed wireless, dsl, cable, and fiber, though these may vary depending on the region within the city.
When it comes to broadband download speeds faster than 25 Mbps, the situation is similar. Cardiff By The Sea internet customers who want faster speeds have between 2 and 12 choices of companies offering speeds up to or over 25 Mbps.
More internet companies with faster speeds means fewer monopolies and better prices for customers. In promoting a free market for internet, Cardiff By The Sea is doing quite well.
TV & Internet 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
Cox Communications Cable in Cardiff By The Sea, CA
Cox cable coverage
About 91.30%, or 10,511 people, have Cox cable internet available to them in the city. The company covers the entire Cardiff By The Sea area. Cox 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.
Cox Communications cable download speeds
Cox is above average when comparing download speeds to all other internet providers in Cardiff By The Sea. Versus other cable providers in the area, Cox cable is the fastest. There are no different maximum speeds throughout Cardiff By The Sea. The fastest plan anyone in Cardiff By The Sea can order from Cox goes up to 2,000 Mbps, and all Cardiff By The Sea customers can get this speed.
Show all download speeds
- 100.0% up to 2,000.0 Mbps
Cox Communications cable upload speeds
In Cardiff By The Sea download speeds tend to be faster than than upload speeds for Cox cable. Compared to other ISPs, Cox is below average where upload speeds are concerned, and the fastest compared to other Cardiff By The Sea cable providers. Cox 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 100 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, Cox customers can get speeds up to 97 Mbps.
Show all upload speeds
- 94.7% up to 100.0 Mbps
- 5.3% up to 35.0 Mbps
ting Fiber in Cardiff By The Sea, CA
ting fiber coverage
About 81.32%, or 9,362 people, have ting fiber internet available to them in the city. The company covers the northeast, east, northwest, southeast, north, west, central, and south Cardiff By The Sea area. ting is a large internet service provider internet service providers in the US, with internet service available in much of Cardiff By The Sea.
ting fiber download speeds
ting is below average when comparing download speeds to all other internet providers in Cardiff By The Sea. Versus other fiber providers in the area, ting fiber is the slowest. There are no different maximum speeds throughout Cardiff By The Sea. The fastest plan anyone in Cardiff By The Sea can order from ting goes up to 1,000 Mbps, and all Cardiff By The Sea customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
ting fiber upload speeds
In Cardiff By The Sea download speeds tend to be equal to than upload speeds for ting fiber. Compared to other ISPs, ting is below average where upload speeds are concerned, and the slowest compared to other Cardiff By The Sea fiber providers. ting offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Cardiff By The Sea is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
EarthLink Fiber in Cardiff By The Sea, CA
EarthLink fiber coverage
About 60.10%, or 6,919 people, have EarthLink fiber 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 a majority of Cardiff By The Sea.
EarthLink fiber download speeds
EarthLink is one of the fastest when comparing download speeds to all other internet providers in Cardiff By The Sea. Versus other fiber providers in the area, EarthLink fiber is one of the fastest. There are no different maximum speeds throughout Cardiff By The Sea. The fastest plan anyone in Cardiff By The Sea can order from EarthLink goes up to 5,000 Mbps, and all Cardiff By The Sea customers can get this speed.
Show all download speeds
- 100.0% up to 5,000.0 Mbps
EarthLink fiber upload speeds
In Cardiff By The Sea download speeds tend to be equal to than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Cardiff By The Sea fiber providers. EarthLink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Cardiff By The Sea is up to 5,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 5,000.0 Mbps
AT&T Fiber in Cardiff By The Sea, CA
AT&T fiber coverage
About 60.10%, or 6,919 people, have AT&T fiber 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 a majority of Cardiff By The Sea.
AT&T fiber download speeds
AT&T is one of the fastest when comparing download speeds to all other internet providers in Cardiff By The Sea. Versus other fiber providers in the area, AT&T fiber is one of the fastest. There are no 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 5,000 Mbps, and all Cardiff By The Sea customers can get this speed.
Show all download speeds
- 100.0% up to 5,000.0 Mbps
AT&T fiber upload speeds
In Cardiff By The Sea download speeds tend to be equal to than upload speeds for AT&T fiber. Compared to other ISPs, AT&T is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Cardiff By The Sea fiber providers. AT&T offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Cardiff By The Sea is up to 5,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 5,000.0 Mbps
Spectrum Cable in Cardiff By The Sea, CA
Spectrum cable coverage
About 39.27%, or 4,521 people, have Spectrum cable internet available to them in the city. The company covers the northeast, east, southeast, and south Cardiff By The Sea area. Spectrum is one of the largest internet service providers internet service providers in the US, with internet service available in some of Cardiff By The Sea.
Spectrum cable download speeds
Spectrum is below average when comparing download speeds to all other internet providers in Cardiff By The Sea. Versus other cable providers in the area, Spectrum cable is the slowest. There are no different maximum speeds throughout Cardiff By The Sea. The fastest plan anyone in Cardiff By The Sea can order from Spectrum goes up to 1,000 Mbps, and all Cardiff By The Sea customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum cable upload speeds
In Cardiff By The Sea download speeds tend to be faster than than upload speeds for Spectrum cable. Compared to other ISPs, Spectrum is below average where upload speeds are concerned, and the slowest compared to other Cardiff By The Sea cable providers. Spectrum offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Cardiff By The Sea is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
EarthLink Fixed Wireless in Cardiff By The Sea, CA
EarthLink fixed wireless coverage
About 96.69%, or 11,131 people, have EarthLink fixed wireless 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 fixed wireless download speeds
EarthLink is one of the slowest when comparing download speeds to all other internet providers in Cardiff By The Sea. Versus other fixed wireless providers in the area, EarthLink fixed wireless is one of the slowest. There are 2 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 25 Mbps, and the city-wide average maximum speed for Cardiff By The Sea customers is up to 51 Mbps.
Show all download speeds
- 35.2% up to 100.0 Mbps
- 64.8% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In Cardiff By The Sea download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is one of the slowest where upload speeds are concerned, and one of the slowest compared to other Cardiff By The Sea fixed wireless 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 3.0 Mbps. On average, EarthLink customers can get speeds up to 9.0 Mbps.
Show all upload speeds
- 35.2% up to 20.0 Mbps
- 64.8% up to 3.0 Mbps
AT&T Fixed Wireless in Cardiff By The Sea, CA
AT&T fixed wireless coverage
About 96.69%, or 11,131 people, have AT&T fixed wireless 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 fixed wireless download speeds
AT&T is one of the slowest when comparing download speeds to all other internet providers in Cardiff By The Sea. Versus other fixed wireless providers in the area, AT&T fixed wireless is one of the slowest. There are 2 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 25 Mbps, and the city-wide average maximum speed for Cardiff By The Sea customers is up to 51 Mbps.
Show all download speeds
- 35.2% up to 100.0 Mbps
- 64.8% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In Cardiff By The Sea download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is one of the slowest where upload speeds are concerned, and one of the slowest compared to other Cardiff By The Sea fixed wireless 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 3.0 Mbps. On average, AT&T customers can get speeds up to 9.0 Mbps.
Show all upload speeds
- 35.2% up to 20.0 Mbps
- 64.8% up to 3.0 Mbps
T-Mobile Home Internet Fixed Wireless in Cardiff By The Sea, CA
T-Mobile Home Internet fixed wireless coverage
About 95.19%, or 10,958 people, have T-Mobile Home Internet fixed wireless internet available to them in the city. The company covers the entire Cardiff By The Sea area. T-Mobile Home Internet 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.
T-Mobile Home Internet fixed wireless download speeds
T-Mobile Home Internet is below average when comparing download speeds to all other internet providers in Cardiff By The Sea. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is below average. There are 2 different maximum speeds throughout Cardiff By The Sea. The fastest plan anyone in Cardiff By The Sea can order from T-Mobile Home Internet goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Cardiff By The Sea customers is up to 94 Mbps.
Show all download speeds
- 92.4% up to 100.0 Mbps
- 7.6% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In Cardiff By The Sea download speeds tend to be faster than than upload speeds for T-Mobile Home Internet fixed wireless. Compared to other ISPs, T-Mobile Home Internet is below average where upload speeds are concerned, and below average compared to other Cardiff By The Sea fixed wireless providers. T-Mobile Home 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 Cardiff By The Sea is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, T-Mobile Home Internet customers can get speeds up to 19 Mbps.
Show all upload speeds
- 92.4% up to 20.0 Mbps
- 7.6% up to 3.0 Mbps
Verizon Fixed Wireless in Cardiff By The Sea, CA
Verizon fixed wireless coverage
About 91.71%, or 10,558 people, have Verizon fixed wireless internet available to them in the city. The company covers the entire Cardiff By The Sea area. Verizon 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.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in Cardiff By The Sea. Versus other fixed wireless providers in the area, Verizon fixed wireless is above average. There are no different maximum speeds throughout Cardiff By The Sea. The fastest plan anyone in Cardiff By The Sea can order from Verizon goes up to 300 Mbps, and all Cardiff By The Sea customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In Cardiff By The Sea download speeds tend to be faster than than upload speeds for Verizon fixed wireless. Compared to other ISPs, Verizon is below average where upload speeds are concerned, and below average compared to other Cardiff By The Sea fixed wireless providers. Verizon offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Cardiff By The Sea is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
San Diego Broadband Fixed Wireless in Cardiff By The Sea, CA
San Diego Broadband fixed wireless coverage
About 9.79%, or 1,127 people, have San Diego Broadband fixed wireless internet available to them in the city. The company covers the east and southeast Cardiff By The Sea area. San Diego Broadband is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Cardiff By The Sea.
San Diego Broadband fixed wireless download speeds
San Diego Broadband is below average when comparing download speeds to all other internet providers in Cardiff By The Sea. Versus other fixed wireless providers in the area, San Diego Broadband fixed wireless is the fastest. There are no different maximum speeds throughout Cardiff By The Sea. The fastest plan anyone in Cardiff By The Sea can order from San Diego Broadband goes up to 500 Mbps, and all Cardiff By The Sea customers can get this speed.
Show all download speeds
- 100.0% up to 500.0 Mbps
San Diego Broadband fixed wireless upload speeds
In Cardiff By The Sea download speeds tend to be faster than than upload speeds for San Diego Broadband fixed wireless. Compared to other ISPs, San Diego Broadband is below average where upload speeds are concerned, and the fastest compared to other Cardiff By The Sea fixed wireless providers. San Diego Broadband offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Cardiff By The Sea is up to 100 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 100.0 Mbps
Cardiff By The Sea Internet 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 internet in Cardiff By The Sea compare to the rest of California?
Internet speeds in Cardiff By The Sea are comparable versus the average speeds in California: 3,631 Mbps in California versus 3,722 Mbps in the city. The state has similar internet availability compared to the city. Average internet coverage in California is 98.73% versus 99.95% in Cardiff By The Sea.
What zip codes have widespread internet?
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 internet service 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 internet coverage, slower speeds
- Solana Beach, CA: less internet coverage, faster speeds
- Rancho Santa Fe, CA: more internet coverage, slower speeds
- Del Mar, CA: more internet coverage, slower speeds
- Carlsbad, CA: less internet coverage, slower speeds
- San Marcos, CA: less internet coverage, slower speeds
- Sunny Vista, CA: more internet coverage, slower speeds
- Vista, CA: less internet coverage, slower speeds
- Escondido, CA: less internet coverage, slower speeds
- Poway, CA: more internet coverage, slower speeds
Cities with Similar Populations
- Wallingford, PA: more internet coverage, slower speeds
- New Baltimore, VA: more internet coverage, slower speeds
- Centerville, MA: less internet coverage, slower speeds
- Cedar Hills, UT: more internet coverage, faster speeds
- Kenai, AK: less internet coverage, slower speeds
- Campobello, SC: less internet coverage, slower speeds
- Camp Verde, AZ: less internet coverage, slower speeds
- Calimesa, CA: less internet coverage, faster speeds
- Cahokia, IL: more internet coverage, slower speeds
- Burkburnett, TX: less internet coverage, slower speeds