In Ontario there is 1 residential DSL provider covering 2.93% of the city. The average home can get speeds up to 19 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 Ontario, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Ontario, CA please click below.
DSL Internet Service Provider in Ontario
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 Ontario are not shown.
Ontario 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 Ontario is DSL internet available?
DSL Internet Availability Key
DSL is available in 2.93% of Ontario. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is Frontier. Call one of the companies with service in Ontario above to see who has service at your home.
How fast is DSL internet in Ontario?
The map below shows maximum DSL internet speeds by area in Ontario.
DSL Internet Speed Key
The average Ontario home can get up to 19 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 100 Mbps, which less than 1% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 2.53% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Ontario.
DSL internet speeds tend to be faster in the northwest parts of Ontario, and slower in the southeast areas of the city.
Is DSL the fastest internet I can get in Ontario?
The fastest internet for you may vary based on where in Ontario you live. In general, fiber competes most often with DSL in the city.
- Fiber is the fastest internet type for 95.42% of Ontario homes.
- Cable is fastest for 4.42% 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 Ontario homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Ontario, along with details on where in Ontario and at what speeds.
Frontier Communications DSL in Ontario, CA
Frontier DSL coverage
About 2.49%, or 4,419 people, have Frontier DSL internet available to them in the city. The company covers the southeast, northeast, northwest, and south Ontario area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Ontario.
Frontier Communications DSL download speeds
Frontier is the slowest when comparing download speeds to all other internet providers in Ontario. Versus other DSL providers in the area, Frontier DSL is the slowest. There are no different maximum speeds throughout Ontario. The fastest plan anyone in Ontario can order from Frontier goes up to 10 Mbps, and all Ontario customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In Ontario download speeds tend to be faster than than upload speeds for Frontier DSL. Compared to other ISPs, Frontier is the slowest where upload speeds are concerned, and the slowest compared to other Ontario DSL providers. Frontier offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Ontario is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
Ontario DSL by Area
This information is most helpful to those looking for homes or considering moving to Ontario or any of the areas nearby.
How does DSL internet in Ontario compare to the rest of California?
DSL internet speeds in Ontario are much faster versus the average speeds in California: 0.00 Mbps in California versus 19 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in California is 0.00% versus 2.93% in Ontario.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Ontario 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
- Montclair, CA: more DSL coverage, slower speeds
- Upland, CA: less DSL coverage, slower speeds
- Rancho Cucamonga, CA: more DSL coverage, slower speeds
- Claremont, CA: more DSL coverage, slower speeds
- Eastvale, CA: more DSL coverage, faster speeds
- Pomona, CA: more DSL coverage, slower speeds
- Alta Loma, CA: more DSL coverage, slower speeds
- Chino Hills, CA: less DSL coverage, faster speeds
- Mira Loma, CA: more DSL coverage, faster speeds
- Glen Avon, CA: more DSL coverage, faster speeds
Cities with Similar Populations
- Lawrence, KS: more DSL coverage, faster speeds
- Lehi, UT: more DSL coverage, faster speeds
- Lehigh Acres, FL: more DSL coverage, faster speeds
- Littleton, CO: more DSL coverage, faster speeds
- Lexington, SC: more DSL coverage, faster speeds
- Lodi, CA: more DSL coverage, faster speeds
- Las Vegas, NV: more DSL coverage, faster speeds
- Lima, OH: more DSL coverage, faster speeds
- Las Cruces, NM: more DSL coverage, faster speeds
- Layton, UT: more DSL coverage, faster speeds