8 Best Internet Providers in Cardiff By The Sea, CA
Find internet availability by address in Cardiff By The Sea, CA
Jump to: Best Internet Provider | Availability Maps | Customer Reviews | Cardiff By The Sea ISP Report Card | Business Internet in Cardiff By The Sea
| Cardiff By The Sea ISP Report Card | A | |
| Download Speed for Most Households | 3,722 Mbps | |
| Number of Internet Service Providers | 8 | |
| Real Cardiff By The Sea Customer Ratings | 3 |
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
Cardiff By The Sea has 8 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, DSL, and Fixed Wireless internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in Cardiff By The Sea.
▼
Cardiff By The Sea has 8 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, DSL, and Fixed Wireless internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in Cardiff By The Sea.
Compare Providers Ranked by Coverage, Speed, and Customer Ratings
EarthLink
Connection
Customer Rating
Fiber
DSL
Fixed Wireless
AT&T
Connection
Customer Rating
Fiber
DSL
Fixed Wireless
Cox
Connection
Customer Rating
Cable
ting
Connection
Customer Rating
Fiber
Above are the top 4 providers in Cardiff By The Sea, CA for most people based on high speed internet coverage, speeds, and customer reviews. Click below to see all providers in your city.
Speed and technology may vary by address for all providers. Please note we may have a financial relationship with some of the providers above, which does not impact the customer ratings displayed. Customer ratings listed above are national ratings, local Cardiff By The Sea ratings may vary and are shown below.
Who is the Best Internet Provider in Cardiff By The Sea, CA?
Spectrum is the best internet provider in Cardiff By The Sea based on California customer satisfaction ratings and reviews. Based on our extensive and unbiased survey, Spectrum had the best reviews at the local, state, and national levels versus all available providers in Cardiff By The Sea, making it a solid recommendation among providers with reviews. Unfortunately, Spectrum is an option for 39.27% of the city.
or call 1-877-411-1381
The chart and table below show average customer ratings from customers in Cardiff By The Sea, California, and customers throughout the country.
Top Rated Internet Providers in Cardiff By The Sea
Local, State, and National Ratings for all Cardiff By The Sea Internet Providers
| ISP / Tech Type | Cardiff By The Sea Overall | California Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| Spectrum | (2) | (203) | (1738) | View Plans | ||
| AT&T | (1) | (107) | (924) | View Plans | ||
| T-Mobile Home Internet | (0) | (22) | (284) | View Plans | ||
| Verizon | (0) | (24) | (723) | View Plans | ||
| Cox | (0) | (51) | (406) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| Viasat | (0) | (1) | (11) | View Plans | ||
| EarthLink | (0) | (2) | (12) | View Plans | ||
| ting | (0) | (0) | (12) | View Plans | ||
| San Diego Broadband | (0) | (0) | (0) | View Plans |
Based on 411 reviews from California internet customers, Spectrum is the best internet service provider for Cardiff By The Sea residents. Spectrum was rated at an average of 3.25 out of 5 in our report for overall customer satisfaction. AT&T wins for second-place in California, with 3.00 out of 5 stars and 100.0% coverage in Cardiff By The Sea.
At a national level, based on 4128 national reviews for any of the providers listed above, ting is rated higher than any other provider, with a rating of 4.22 out of 5.
Which Providers are Available at my Home in Cardiff By The Sea?
a different provider.

Internet Availability Key
Speeds and coverage vary within the city, and sometimes even from block to block. The map shows speeds per provider and where each provider is available.
Who is the Fastest Internet Provider in Cardiff By The Sea?
According to unbiased feedback from real internet customers in the city, they reported being happiest with speeds provided by Spectrum. On the other hand, based on data provided by the internet providers to the FCC, EarthLink and AT&T should have faster speeds at a local level. While we typically put more weight on real-world customer ratings, we display both satisfaction and technical maximum information for customers to decide for themselves.
Data Reported to FCC by ISPs: Average Maximum Available in Cardiff By The Sea
| ISP / Tech Type | Max Advertised Speed | ||
|---|---|---|---|
| AT&T | 5,000 Mbps | ||
| EarthLink | 5,000 Mbps | ||
| Cox Communications | 2,000 Mbps | ||
| Spectrum | 1,000 Mbps | ||
| ting | 1,000 Mbps | ||
| San Diego Broadband | 500 Mbps | ||
| Verizon | 300 Mbps | ||
| T-Mobile Home Internet | 100 Mbps | ||
| Viasat | 100 Mbps | ||
| HughesNet | 25 Mbps |
Customer Ratings for Internet Provider Speeds in Cardiff By The Sea
| ISP / Tech Type | Cardiff By The Sea Speed | California Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Spectrum | (2) | (203) | (1738) | View Plans | ||
| AT&T | (1) | (107) | (924) | View Plans | ||
| Verizon | (0) | (24) | (723) | View Plans | ||
| T-Mobile Home Internet | (0) | (22) | (284) | View Plans | ||
| Cox | (0) | (51) | (406) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| Viasat | (0) | (1) | (11) | View Plans | ||
| EarthLink | (0) | (2) | (12) | View Plans | ||
| ting | (0) | (0) | (12) | View Plans | ||
| San Diego Broadband | (0) | (0) | (0) | View Plans |
Based on data reported by Cardiff By The Sea ISPs to the FCC, the fastest speeds in the city are available through EarthLink and AT&T. These internet providers offer speeds up to 5,000 Mbps in Cardiff By The Sea. Therefore, the average customer can get up to 3,046 Mbps if they're willing to purchase the fastest subscription tier available at their homes.
Additionally, actual customers in the city rated their satisfaction with internet speed highest with Spectrum. This indicates Spectrum reliably delivers speeds expected by the customer based on the plan they are paying for.
Who is the Cheapest Internet Provider in Cardiff By The Sea?
California customers rate Spectrum as the cheapest internet service provider in state. Data comes from customers in the state rating their satisfaction with pricing. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
Spectrum received a local rating of 4.00 out of 5, which is lower than the average across all internet providers in the country. AT&T is rated in second place for affordability by the company’s Cardiff By The Sea customers with an average price rating of 3.00 out of 5.
The chart and graph below show how customers in Cardiff By The Sea, California, and the United States rated the affordability of their internet service.
Rated Affordability in Cardiff By The Sea
| ISP / Tech Type | Cardiff By The Sea Affordability | California Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| Spectrum | (2) | (203) | (1738) | View Plans | ||
| AT&T | (1) | (107) | (924) | View Plans | ||
| T-Mobile Home Internet | (0) | (22) | (284) | View Plans | ||
| Verizon | (0) | (24) | (723) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| Viasat | (0) | (1) | (11) | View Plans | ||
| Cox | (0) | (51) | (406) | View Plans | ||
| EarthLink | (0) | (2) | (12) | View Plans | ||
| ting | (0) | (0) | (12) | View Plans | ||
| San Diego Broadband | (0) | (0) | (0) | View Plans |
Cardiff By The Sea Internet Health Assessment
ISP Reports evaluates the technological infrastructure across the United States. This includes assessing a grade for ISP providers and infrastructure in the city and setting an index number for the digital connectivity of its residents. You can view the ISP Report Card and the Digital Connectivity Index for Cardiff By The Sea below, including the metrics used and how Cardiff By The Sea compares to the rest of California and nation.
| Metric
(hover for details)
|
Cardiff By The Sea | California | USA | ||
|---|---|---|---|---|---|
| Fiber Availability Percent The percentage of households in Cardiff By The Sea that have a Fiber internet connection available to their home. | 96.33% | 56.12% | 67.25% | ||
| Average Download SpeedThe maximum download speed most households can get on average. This is measured by availability in a block group and weighted by the population in that area. | 3,722 Mbps | 3,631 Mbps | 3,293 Mbps | ||
| Provider CountThe number of providers available for most people. This is a weighted average by block rather than a total for Cardiff By The Sea. | 9.2 | 7.4 | 6.8 |
| Average Household SizeA larger household size in a city indicates that there will be a greater need for bandwidth due to simultaneous usage, multiple devices, and network congestion. | 2.6 | 3.0 | 2.7 | ||
| Work From Home PercentA higher percent of the population working from home indicates bandwidth requirements being more widely needed rather than consolidated to commercial portions of the city. | 26% | 15% | 14% | ||
| Households with DevicesA higher percentage of households with computing devices in the home indicates a higher level of infrastructure needed to support those households. | 98% | 96% | 95% | ||
| Households with InternetA higher percentage of households with internet indicates a higher need for usage and connectivity in people’s daily lives. | 96% | 93% | 90% | ||
| Households with BroadbandA higher percentage of households with a broadband connection (defined as speeds above 25 Mbps) indicates heavier usage needs within these households. | 91% | 78% | 75% | ||
| Broadband Usage vs. AvailabilityThis measures what percentage of households who have a broadband connection to their home actually have an active subscription to that service. | 91% | 79% | 76% |
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
Cardiff By The Sea ISP Report Card & Digital Connectivity Index
The ISP Report Card in Cardiff By The Sea is A, which is much better than other cities. The local demand for broadband internet connectivity in Cardiff By The Sea is high with a score of 88 / 100 in our Digital Connectivity Index. This means that internet service providers operating in Cardiff By The Sea have done a great job meeting the needs of its residents.
The Cardiff By The Sea ISP Report Card evaluates the city on availability and speed metrics compared to other cities in the United States. ISP Infrastructure can vary greatly and on its own isn’t a perfect measure of what a city needs. Please see our ISP Report Card along with the Digital Connectivity Index above to evaluate how well the connectivity demand is met by the existing infrastructure.
96% of Cardiff By The Sea households have an internet connection despite having 99.95% availability. 91% of households have fiber, cable, or DSL, 9% have satellite, 0% are still on dial-up, and 1% of households have internet but don’t pay for a subscription because it’s subsidized by the Affordable Connectivity Program.
As you can see in the table above, while 91% of households have a broadband connection such as fiber, cable or DSL available to their home, 91% subscribe to it. A very large amount of Cardiff By The Sea residents are taking advantage of the available internet infrastructure.
For more details, please visit our ISP Report Card and Digital Connectivity Index pages.
How do Neighboring Cities Compare to Cardiff By The Sea?
- ISP Report Card: B+
- Digital Connectivity Index: 84 / 100
- ISP Report Card: A+
- Digital Connectivity Index: 81 / 100
- ISP Report Card: B
- Digital Connectivity Index: 89 / 100
- ISP Report Card: B
- Digital Connectivity Index: 83 / 100
- ISP Report Card: B
- Digital Connectivity Index: 89 / 100
- ISP Report Card: B
- Digital Connectivity Index: 88 / 100
- ISP Report Card: B-
- Digital Connectivity Index: 90 / 100
- ISP Report Card: B
- Digital Connectivity Index: 87 / 100
- ISP Report Card: B-
- Digital Connectivity Index: 81 / 100
How Much Speed does a Cardiff By The Sea Household Need?
Higher speed is typically preferred, but that comes at a higher price. The average size of a household in Cardiff By The Sea is 2.6, which is smaller than the California average of 3.0 and smaller than the national average of 2.7. Cardiff By The Sea's average household income is $174,172 which is much higher than the California average of $108,618 and much higher than the national average of $90,606. Homes with more people living in them and with higher incomes tend to indicate more devices being used more often.
Cardiff By The Sea also has 13% of its population enrolled in school between the 6th grade and college level, this is lower than the California average of 17%. Additionally, 26% of residents work from home, which is higher than the 15% of residents in California who work from home. This and other factors you can see above show us that the community of Cardiff By The Sea has a very high need for internet connectivity and speeds.
Compared to the rest of the country, Cardiff By The Sea households are much more technology-engaged. 98% of households have some sort of computing device, 97% have desktops or laptops in the home, and 96% have smartphones. To see what speeds you are currently getting, please visit our internet speed test tool.
Which Fiber Internet Providers are Available in Cardiff By The Sea?
ting Fiber in Cardiff By The Sea, CA
ting offers Fiber service to 81.3% of Cardiff By The Sea homes. Across the city, ting Fiber is the only type of service available from the company, with speeds up to 1,000 Mbps
EarthLink Fiber in Cardiff By The Sea, CA
EarthLink offers Fiber service to 60.1% of Cardiff By The Sea homes. Across the city, EarthLink Fiber has speeds up to 5,000 Mbps
AT&T Fiber in Cardiff By The Sea, CA
AT&T offers Fiber service to 60.1% of Cardiff By The Sea homes. Across the city, AT&T Fiber has speeds up to 5,000 Mbps
Which Cable Internet Providers are Available in Cardiff By The Sea?
Cox Cable in Cardiff By The Sea, CA
Cox Communications offers Cable service to 91.3% of Cardiff By The Sea homes. Across the city, Cox Cable is the only type of service available from the company, with speeds up to 2,000 Mbps
Spectrum Cable in Cardiff By The Sea, CA
Spectrum offers Cable service to 39.3% of Cardiff By The Sea homes. Across the city, Spectrum Cable is the only type of service available from the company, with speeds up to 1,000 Mbps
Which DSL Internet Providers are Available in Cardiff By The Sea?
EarthLink DSL in Cardiff By The Sea, CA
EarthLink offers DSL service to 99.7% of Cardiff By The Sea homes. Across the city, EarthLink DSL has speeds up to 96 Mbps, with speeds from 50 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 10 and as high as 20, with an average of 19 Mbps throughout the city. EarthLink DSL is rated the same as other types of internet service available in Cardiff By The Sea from EarthLink in terms of customer satisfaction.
AT&T DSL in Cardiff By The Sea, CA
AT&T offers DSL service to 99.7% of Cardiff By The Sea homes. Across the city, AT&T DSL has speeds up to 96 Mbps, with speeds from 50 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 10 and as high as 20, with an average of 19 Mbps throughout the city. AT&T DSL is rated about the same as other types of internet service available in Cardiff By The Sea from AT&T in terms of customer satisfaction.
Which Fixed Wireless and LTE Internet Providers are Available in Cardiff By The Sea?
EarthLink Fixed Wireless in Cardiff By The Sea, CA
EarthLink offers Fixed Wireless service to 96.7% of Cardiff By The Sea homes. Across the city, EarthLink Fixed Wireless has speeds up to 51 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 9.0 Mbps throughout the city.
AT&T Fixed Wireless in Cardiff By The Sea, CA
AT&T offers Fixed Wireless service to 96.7% of Cardiff By The Sea homes. Across the city, AT&T Fixed Wireless has speeds up to 51 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 9.0 Mbps throughout the city.
T-Mobile Home Internet Fixed Wireless in Cardiff By The Sea, CA
T-Mobile Home Internet offers Fixed Wireless service to 95.2% of Cardiff By The Sea homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 94 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 19 Mbps throughout the city.
Verizon Fixed Wireless in Cardiff By The Sea, CA
Verizon offers Fixed Wireless service to 91.7% of Cardiff By The Sea homes. Across the city, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 300 Mbps
San Diego Broadband Fixed Wireless in Cardiff By The Sea, CA
San Diego Broadband offers Fixed Wireless service to 9.8% of Cardiff By The Sea homes. Across the city, San Diego Broadband Fixed Wireless is the only type of service available from the company, with speeds up to 500 Mbps
Which ISP Should You Choose in Cardiff By The Sea?
The right ISP for you depends upon your needs, but in general we can make the following suggestions:
- The best all-around internet service provider in Cardiff By The Sea is Spectrum.
- The fastest internet provider should be EarthLink and AT&T. Considering speed for the money and reliability in speeds, Spectrum may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Cardiff By The Sea is Spectrum.
- HughesNet, AT&T, EarthLink, and Viasat has the broadest coverage in Cardiff By The Sea, and is most likely to cover your home. To find out exactly what's available at your home, please use our address search tool.
How does Cardiff By The Sea compare to other cities with a similar population?
To see how Cardiff By The Sea stacks up on the national level, it's useful to look at some other cities with similarly sized populations. Below you can see a list of these cities and how they compare to Cardiff By The Sea's A ISP Report Card and 88 / 100 Digital Connectivity Index.
- ISP Report Card: B+
- Digital Connectivity Index: 90 / 100
- ISP Report Card: C-
- Digital Connectivity Index: 95 / 100
- ISP Report Card: C-
- Digital Connectivity Index: 76 / 100
- ISP Report Card: A
- Digital Connectivity Index: 97 / 100
- ISP Report Card: C-
- Digital Connectivity Index: 51 / 100
- ISP Report Card: B-
- Digital Connectivity Index: 39 / 100
- ISP Report Card: D
- Digital Connectivity Index: 48 / 100
- ISP Report Card: B
- Digital Connectivity Index: 68 / 100
- ISP Report Card: C
- Digital Connectivity Index: 55 / 100
(11)
(1)