In Belfast there are 2 residential DSL providers covering 59.96% of the city. The average home can get speeds up to 25 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 Belfast, ME.
To see availability maps for all providers including fiber, cable, DSL, and more in Belfast, ME please click below.
DSL Internet Service Providers in Belfast
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 Belfast are not shown.
Belfast 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 Belfast is DSL internet available?
DSL Internet Availability Key
DSL is available in 59.96% of Belfast. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is Fidium. Call one of the companies with service in Belfast above to see who has service at your home.
How fast is DSL internet in Belfast?
The map below shows maximum DSL internet speeds by area in Belfast.
DSL Internet Speed Key
The average Belfast home can get up to 25 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 100 Mbps, which 4.98% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 46.17% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Belfast.
DSL internet speeds tend to be faster in the central parts of Belfast, and slower in the west areas of the city.
Is DSL the fastest internet I can get in Belfast?
The fastest internet for you may vary based on where in Belfast you live. In general, fiber competes most often with DSL in the city.
- Fiber is the fastest internet type for 96.11% of Belfast homes.
- Cable is fastest for 1.52% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 2.17%.
- Satellite internet may be the only option for less than 1% of Belfast homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Belfast, along with details on where in Belfast and at what speeds.
Fidium Fiber DSL in Belfast, ME
Fidium DSL coverage
About 59.62%, or 4,982 people, have Fidium DSL internet available to them in the city. The company covers the entire Belfast area. Fidium is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Belfast.
Fidium Fiber DSL download speeds
Fidium is below average when comparing download speeds to all other internet providers in Belfast. Versus other DSL providers in the area, Fidium DSL is the fastest. There are 6 different maximum speeds throughout Belfast. The fastest plan anyone in Belfast can order from Fidium goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Belfast customers is up to 25 Mbps.
Show all download speeds
- 8.4% up to 100.0 Mbps
- 5.4% up to 80.0 Mbps
- 3.2% up to 60.0 Mbps
- 4.6% up to 50.0 Mbps
- 1.5% up to 40.0 Mbps
- 76.9% up to 10.0 Mbps
Fidium Fiber DSL upload speeds
In Belfast download speeds tend to be faster than than upload speeds for Fidium DSL. Compared to other ISPs, Fidium is below average where upload speeds are concerned, and the fastest compared to other Belfast DSL providers. Fidium offers 4 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 Belfast is up to 40 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Fidium customers can get speeds up to 6.6 Mbps.
Show all upload speeds
- 8.4% up to 40.0 Mbps
- 10.2% up to 20.0 Mbps
- 4.6% up to 10.0 Mbps
- 76.9% up to 1.0 Mbps
Ontario & Trumansburg Telephone Companies DSL in Belfast, ME
OTTCTel DSL coverage
About 2.27%, or 190 people, have OTTCTel DSL internet available to them in the city. The company covers the southeast and central Belfast area. OTTCTel is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Belfast.
Ontario & Trumansburg Telephone Companies DSL download speeds
OTTCTel is the slowest when comparing download speeds to all other internet providers in Belfast. Versus other DSL providers in the area, OTTCTel DSL is the slowest. There are no different maximum speeds throughout Belfast. The fastest plan anyone in Belfast can order from OTTCTel goes up to 10 Mbps, and all Belfast customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
Ontario & Trumansburg Telephone Companies DSL upload speeds
In Belfast download speeds tend to be faster than than upload speeds for OTTCTel DSL. Compared to other ISPs, OTTCTel is the slowest where upload speeds are concerned, and the slowest compared to other Belfast DSL providers. OTTCTel offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Belfast is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
Belfast DSL by Area
This information is most helpful to those looking for homes or considering moving to Belfast or any of the areas nearby.
How does DSL internet in Belfast compare to the rest of Maine?
DSL internet speeds in Belfast are much faster versus the average speeds in Maine: 0.00 Mbps in Maine versus 25 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in Maine is 0.00% versus 59.96% in Belfast.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Belfast 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
- Dog Island Corner, ME: more DSL coverage, slower speeds
- Waldo, ME: more DSL coverage, faster speeds
- Searsport, ME: less DSL coverage, faster speeds
- Morrill, ME: more DSL coverage, faster speeds
- Swanville, ME: more DSL coverage, faster speeds
- Lincolnville Center, ME: more DSL coverage, faster speeds
- Lincolnville, ME: more DSL coverage, faster speeds
- Slab City, ME: more DSL coverage, slower speeds
- Fosters Corner, ME: more DSL coverage, slower speeds
- Stockton Springs, ME: more DSL coverage, slower speeds
Cities with Similar Populations
- Parkton, NC: more DSL coverage, faster speeds
- Orland Hills, IL: more DSL coverage, faster speeds
- Orefield, PA: less DSL coverage, faster speeds
- Opp, AL: less DSL coverage, slower speeds
- Olivette, MO: more DSL coverage, faster speeds
- Oliver Springs, TN: more DSL coverage, faster speeds
- Olive Hill, KY: more DSL coverage, faster speeds
- Old Orchard Beach, ME: more DSL coverage, slower speeds
- Odessa, MO: more DSL coverage, faster speeds
- Ocklawaha, FL: less DSL coverage, faster speeds