Best Internet Providers in Diablo, CA
All 7 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Diablo, CA
Diablo has 7 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. 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 3 available internet technologies in Diablo.
Ranks compare Diablo with the 15,682 US towns of 1,000 to 9,999 people, the tiers of our fastest-cities rankings.
The Best Internet in Diablo, CA at a Glance
Diablo Internet Providers, Ranked by Coverage, Speed and Customer Ratings
XFINITY
Connection
Customer Rating
Cable
EarthLink
Connection
Customer Rating
DSL
Fixed Wireless
AT&T
Connection
Customer Rating
DSL
Fixed Wireless
Unwired
Connection
Customer Rating
Fixed Wireless
Providers with less than 1% coverage in this city are excluded from the list. To see if one of these providers is available at your home, please use the address search above.
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 Diablo ratings may vary and are shown below.
Who is the Best Internet Provider in Diablo, CA?
T-Mobile Home Internet is the best internet provider in Diablo based on California customer satisfaction ratings and reviews. Based on our extensive and unbiased survey, T-Mobile Home Internet had the best reviews at the local, state, and national levels versus all available providers in Diablo, making it a solid recommendation among providers with reviews. T-Mobile Home Internet is an option for 97.93% of the city.
Click here to get T-Mobile Home Internet
or call 1-833-601-2935
Which Providers are Available at my Home in Diablo?
Coverage changes block by block. Pick a provider and a technology to see where its service reaches: the darker the area, the larger the share of homes it covers. For your exact address, use the address search above.
Coverage map for each provider in Diablo
- XFINITY - cable coverage map
- Unwired - fixed wireless coverage map
- Verizon - fixed wireless coverage map
- Etheric Networks - fixed wireless coverage map
- T-Mobile Home Internet - fixed wireless coverage map
- AT&T - dsl coverage map
- EarthLink - dsl coverage map
- AT&T - fixed wireless coverage map
- EarthLink - fixed wireless coverage map
How Diablo Compares to Places Its Size
Diablo's report card score is in the bottom 42% and its connectivity index is in the top 4%.
| Measure | Diablo | Rank among US towns of 1,000 to 9,999 people | Contra Costa County | California | US | Leader |
|---|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | ||||||
| Fiber availability | 0.0% | bottom 8% | 58.4% | 62.4% | 71.5% | 1,056 places at 100.0% |
| Average top speed | 1,967 Mbps | top 35% | 4,517 Mbps | 3,834 Mbps | 3,486 Mbps | Collegedale, TN and Lakesite, TN and 2 more (25,000 Mbps) |
| Providers at a typical address | 8.1 | top 8% | 8.6 | 8 | 7.1 | McLendon-Chisholm, TX (14.2) |
| Connectivity index inputs: how much households need and use the internet | ||||||
| People per household | 2.5 | top 45% | 2.9 | 3.0 | 2.7 | St. George, GA (6.2) |
| Workers who work from home | 27% | top 4% | 21% | 17% | 15% | Indian Springs, NV (76%) |
| Homes with a computer, tablet or phone | 100% | top 1% | 98% | 97% | 96% | Tied with 514 other places at 100% |
| Homes with internet | 100% | top 1% | 96% | 94% | 91% | Tied with 114 other places at 100% |
| Homes on fiber, cable or DSL | 87% | top 6% | 83% | 79% | 76% | Bunkerville, NV and Fort Myer, VA and 3 more (100%) |
| More about the households here | ||||||
| Homes with a desktop or laptop | 95% | top 2% | 88% | 84% | 81% | 12 places at 100% |
| Median household income | $233,169 | top 1% | $140,647 | $111,728 | $93,246 | 16 places at $250,001 |
| Residents in school (6th grade to college) | 14% | top 33% | 16% | 17% | 16% | University Park, PA (95%) |
Fiber reaches 0.0% of homes in Diablo, against 58.4% across Contra Costa County and 62.4% across California. Households in Diablo are smaller than the US average (2.5 people against 2.7); 27% of workers work from home (US 15%); and the median household income is $233,169 (US $93,246).
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
Fiber, 5G, Cable and DSL Internet in Diablo
Which Fiber Internet Providers are Available in Diablo?
According to the most recently submitted data by internet service providers to the FCC, there are currently no fiber providers available in Diablo, CA.
Which Fixed Wireless and LTE Internet Providers are Available in Diablo?
Unwired Fixed Wireless in Diablo, CA
Availability:
99.9%
Customer Rating:
(1)
Avg. Download Speed
300 Mbps
Unwired offers Fixed Wireless service to 99.9% of Diablo homes. Across the city, Unwired Fixed Wireless is the only type of service available from the company, with speeds up to 300 Mbps
T-Mobile Home Internet Fixed Wireless in Diablo, CA
Availability:
97.9%
Customer Rating:
(342)
Avg. Download Speed
100 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 97.9% of Diablo homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 100 Mbps
EarthLink Fixed Wireless in Diablo, CA
Availability:
96.6%
Customer Rating:
(4)
Avg. Download Speed
29 Mbps
EarthLink offers Fixed Wireless service to 96.6% of Diablo homes. Across the city, EarthLink Fixed Wireless has speeds up to 29 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 3.9 Mbps throughout the city.
AT&T Fixed Wireless in Diablo, CA
Availability:
96.6%
Customer Rating:
(205)
Avg. Download Speed
29 Mbps
AT&T offers Fixed Wireless service to 96.6% of Diablo homes. Across the city, AT&T Fixed Wireless has speeds up to 29 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 3.9 Mbps throughout the city.
Verizon Fixed Wireless in Diablo, CA
Availability:
69.9%
Customer Rating:
(362)
Avg. Download Speed
300 Mbps
Verizon offers Fixed Wireless service to 69.9% of Diablo homes. Across the city, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 300 Mbps
Etheric Networks Fixed Wireless in Diablo, CA
Availability:
65.6%
Customer Rating:
(0)
Avg. Download Speed
250 Mbps
Etheric Networks offers Fixed Wireless service to 65.6% of Diablo homes. Across the city, Etheric Networks Fixed Wireless is the only type of service available from the company, with speeds up to 250 Mbps
Which Cable Internet Providers are Available in Diablo?
XFINITY Cable in Diablo, CA
Availability:
97.9%
Customer Rating:
(2077)
Avg. Download Speed
2,000 Mbps
XFINITY from Comcast offers Cable service to 97.9% of Diablo homes. Across the city, XFINITY Cable is the only type of service available from the company, with speeds up to 2,000 Mbps
Which DSL Internet Providers are Available in Diablo?
EarthLink DSL in Diablo, CA
Availability:
91.2%
Customer Rating:
(5)
Avg. Download Speed
63 Mbps
EarthLink offers DSL service to 91.2% of Diablo homes. Across the city, EarthLink DSL has speeds up to 63 Mbps, with speeds from 10 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 20, with an average of 15 Mbps throughout the city. EarthLink DSL is rated higher than other types of internet service available in Diablo from EarthLink in terms of customer satisfaction.
AT&T DSL in Diablo, CA
Availability:
91.2%
Customer Rating:
(304)
Avg. Download Speed
63 Mbps
AT&T offers DSL service to 91.2% of Diablo homes. Across the city, AT&T DSL has speeds up to 63 Mbps, with speeds from 10 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 20, with an average of 15 Mbps throughout the city. AT&T DSL is rated about the same as other types of internet service available in Diablo from AT&T in terms of customer satisfaction.
Internet in Diablo by Neighborhood and ZIP Code
Diablo has 1 ZIP code with its own page. Each row links to that place’s page.
Neighborhoods in Diablo
| Neighborhood | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|
ZIP codes in Diablo
| ZIP code | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| 94528 | 1,076 | 0.0% | 1,968 Mbps | 8.1 | C+ | 89/100 |
How Diablo Compares to Nearby Places
The 10 places nearest to Diablo that have their own pages are all within 9 miles. Among them, Lafayette has the most homes with fiber (61.1%) and Clayton the fewest (19.3%); Diablo has 0.0%.
| Place | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Diablo (this page) | 1,353 | 0.0% | 1,967 Mbps | 8.1 | C+ | 87/100 |
| Concord | 125,061 | 49.3% | 4,910 Mbps | 9 | B | 81/100 |
| Walnut Creek | 90,689 | 57.5% | 5,452 Mbps | 9.5 | B+ | 80/100 |
| San Ramon | 86,091 | 49.1% | 3,435 Mbps | 8.9 | B | 95/100 |
| Dublin | 73,012 | 60.8% | 3,706 Mbps | 8.8 | B+ | 95/100 |
| Danville | 59,614 | 40.5% | 3,109 Mbps | 8.7 | B | 95/100 |
| Lafayette | 25,988 | 61.1% | 3,504 Mbps | 8.8 | B | 92/100 |
| Moraga | 19,038 | 35.8% | 3,094 Mbps | 8.9 | B | 94/100 |
| Alamo | 15,995 | 44.3% | 3,217 Mbps | 9.1 | B | 93/100 |
| Clayton | 13,673 | 19.3% | 2,438 Mbps | 7.8 | B- | 89/100 |
| Castle Hill | 152 | 23.7% | 2,711 Mbps | 7.6 | B- | 92/100 |
Who is the Fastest Internet Provider in Diablo?
According to unbiased feedback from real internet customers, they reported being happiest with speeds provided by T-Mobile Home Internet. On the other hand, based on data provided by the internet providers to the FCC, XFINITY from Comcast 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 Diablo
| XFINITY from Comcast | 2,000 |
|---|---|
| Unwired | 300 |
| Verizon | 300 |
| Etheric Networks | 250 |
| Viasat | 100 |
| AT&T | 100 |
| EarthLink | 100 |
| T-Mobile Home Internet | 100 |
| HughesNet | 25 |
How fast is your internet?
Test your connection here and see it next to the speeds providers advertise in Diablo. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Diablo Internet Providers
Based on 388 reviews from California internet customers, T-Mobile Home Internet is the best internet service provider for Diablo residents. T-Mobile Home Internet was rated at an average of 4.11 out of 5 in our report for overall customer satisfaction. Verizon wins for second-place in California, with 3.61 out of 5 stars and 69.9% coverage in Diablo.
At a national level, based on 4604 national reviews for any of the providers listed above, T-Mobile Home Internet is rated higher than any other provider, with a rating of 4.02 out of 5.
Local, State, and National Ratings for all Diablo Internet Providers
The table below shows average customer ratings from customers in Diablo, California, and customers throughout the country.
| ISP / Tech Type | Diablo Overall | California Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (0) | (27) | (342) | View Plans | ||
| Verizon | (0) | (28) | (816) | View Plans | ||
| HughesNet | (0) | (1) |  (25) | View Plans | ||
| Viasat | (0) | (1) |  (12) | View Plans | ||
| XFINITY | (0) | (211) | (2379) | View Plans | ||
| EarthLink | (0) | (2) | (15) | View Plans | ||
| Unwired | (0) | (1) | (1) | View Plans | ||
| AT&T | (0) | (119) | (1051) | View Plans | ||
| Etheric Networks | (0) | (0) | (0) | View Plans |
Customer Ratings for Internet Provider Speeds in Diablo
Based on data reported by Diablo ISPs to the FCC, the fastest speeds in the city are available through XFINITY from Comcast. The company offers speeds up to 2,000 Mbps in Diablo. Therefore, the average customer can get up to 2,000 Mbps if they’re willing to purchase the fastest subscription tier available at their homes.
However, actual customers rated their satisfaction with internet speed highest with T-Mobile Home Internet. This indicates T-Mobile Home Internet reliably delivers speeds expected by the customer based on the plan they are paying for.
| ISP / Tech Type | Diablo Speed | California Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (0) | (27) | (342) | View Plans | ||
| XFINITY | (0) | (211) | (2379) | View Plans | ||
| Verizon | (0) | (28) | (816) | View Plans | ||
| HughesNet | (0) |  (1) | (25) | View Plans | ||
| Unwired | (0) | (1) | (1) | View Plans | ||
| Viasat | (0) | (1) | (12) | View Plans | ||
| AT&T | (0) | (119) | (1051) | View Plans | ||
| EarthLink | (0) | (2) | (15) | View Plans | ||
| Etheric Networks | (0) | (0) | (0) | View Plans |
Who is the Cheapest Internet Provider in Diablo?
Of the providers in Diablo, customers rate T-Mobile Home Internet the best for price. Data comes from customers rating their satisfaction with pricing: in Diablo where enough of them have reviewed a provider, otherwise across California or the country. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
T-Mobile Home Internet is rated 4.26 out of 5 for price, which is higher than the average across all internet providers in the country. Verizon is rated second for affordability, with an average price rating of 3.75 out of 5.
The table below shows how customers in Diablo, California, and the United States rated the affordability of their internet service.
Rated Affordability in Diablo
| ISP / Tech Type | Diablo Affordability | California Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (0) |  (27) | (342) | View Plans | ||
| Verizon | (0) | (28) | (816) | View Plans | ||
| HughesNet | (0) | (1) | (25) | View Plans | ||
| Viasat | (0) | (1) | (12) | View Plans | ||
| Unwired | (0) | (1) | (1) | View Plans | ||
| EarthLink | (0) | (2) | (15) | View Plans | ||
| AT&T | (0) | (119) | (1051) | View Plans | ||
| XFINITY | (0) | (211) | (2379) | View Plans | ||
| Etheric Networks | (0) | (0) | (0) | View Plans |
Customer Reviews for Internet Service Providers in California
Customer Reviews
Steve
ting Fiber
November 13, 2026 Slow, 1/10th the speed they advertised
Robert
Verizon Fixed Wireless
November 10, 2026 Was cut off with .out notice due to upgrade and was not provided connection to upgrade from the same location (tower). Causing further problems in service and added cost.
ISPReports User
AT&T DSL
November 08, 2026 Lousy
ISPReports User
Fidium
November 08, 2026 Vernice
Frontier Fiber
November 01, 2026 Horrible this is horrible. My internet has been down for two days in a half. Never again
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Which ISP Should You Choose in Diablo?
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 Diablo is T-Mobile Home Internet.
- The fastest internet provider should be XFINITY from Comcast. Considering speed for the money and reliability in speeds, T-Mobile Home Internet may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Diablo is T-Mobile Home Internet.
- Viasat, Unwired, and HughesNet has the broadest coverage in Diablo, available to 99.9% of homes, and is most likely to cover your home. To find out exactly what’s available at your home, please use our address search tool.