In 21722 there are 2 residential Cable providers covering 98.18% of the zip. The average home can get speeds up to 1,300 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 Cable internet providers in 21722, MD.
To see availability maps for all providers including fiber, cable, DSL, and more in 21722, MD please click below.
Cable Internet Service Providers in 21722
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 21722 are not shown.
21722 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 21722 is cable internet available?
Cable Internet Availability Key
Cable is available in 98.18% of 21722. Areas in green have cable internet service, where areas in yellow or red may not. The most widely available provider is Antietam Broadband. Call one of the companies with service in 21722 above to see who has service at your home.
How fast is cable internet in 21722?
The map below shows maximum cable internet speeds by area in 21722.
Cable Internet Speed Key
The average 21722 home can get up to 1,300 Mbps on their cable internet plan. The fastest cable download speed in the zip is 1,300 Mbps, which 98.18% of residents can get.
Is cable the fastest internet I can get in 21722?
The fastest internet for you may vary based on where in 21722 you live. In general, fiber competes most often with cable in the zip.
- Fiber is the fastest internet type for 23.06% of 21722 homes.
- Cable is fastest for 75.12% of the zip.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 1.58%.
- Satellite internet may be the only option for less than 1% of 21722 homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in 21722, along with details on where in 21722 and at what speeds.
Antietam Broadband Cable in 21722, MD
Antietam Broadband cable coverage
About 98.18%, or 5,390 people, have Antietam Broadband cable internet available to them in the zip. The company covers the entire 21722 area. Antietam Broadband is a large internet service provider internet service providers in the US, with internet service available in most of 21722.
Antietam Broadband cable download speeds
Antietam Broadband is above average when comparing download speeds to all other internet providers in 21722. Versus other cable providers in the area, Antietam Broadband cable is the fastest. There are no different maximum speeds throughout 21722. The fastest plan anyone in 21722 can order from Antietam Broadband goes up to 1,300 Mbps, and all 21722 customers can get this speed.
Show all download speeds
- 100.0% up to 1,300.0 Mbps
Antietam Broadband cable upload speeds
In 21722 download speeds tend to be faster than than upload speeds for Antietam Broadband cable. Compared to other ISPs, Antietam Broadband is below average where upload speeds are concerned, and the fastest compared to other 21722 cable providers. Antietam Broadband offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21722 is up to 50 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 50.0 Mbps
XFINITY from Comcast Cable in 21722, MD
XFINITY cable coverage
About 1.42%, or 78 people, have XFINITY cable internet available to them in the zip. The company covers the northeast 21722 area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of 21722.
XFINITY from Comcast cable download speeds
XFINITY is above average when comparing download speeds to all other internet providers in 21722. Versus other cable providers in the area, XFINITY cable is the slowest. There are no different maximum speeds throughout 21722. The fastest plan anyone in 21722 can order from XFINITY goes up to 1,200 Mbps, and all 21722 customers can get this speed.
Show all download speeds
- 100.0% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In 21722 download speeds tend to be faster than than upload speeds for XFINITY cable. Compared to other ISPs, XFINITY is below average where upload speeds are concerned, and the slowest compared to other 21722 cable providers. XFINITY offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 21722 is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
21722 Cable by Area
This information is most helpful to those looking for homes or considering moving to 21722 or any of the areas nearby.
How does cable internet in 21722 compare to the rest of Maryland?
Cable internet speeds in 21722 are much faster versus the average speeds in Maryland: 0.00 Mbps in Maryland versus 1,300 Mbps in the zip. The state has similar cable availability compared to the zip. Average cable coverage in Maryland is 0.00% versus 98.18% in 21722.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around 21722 are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does cable internet look like in other zip codes?
Below are zip codes nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Zip Codes
- 21711, MD: more cable coverage, similar speeds
- 25419, WV: more cable coverage, faster speeds
- 21795, MD: less cable coverage, faster speeds
- 21767, MD: more cable coverage, similar speeds
- 21740, MD: less cable coverage, faster speeds
- 21781, MD: more cable coverage, similar speeds
- 17263, PA: more cable coverage, faster speeds
- 21734, MD: more cable coverage, similar speeds
- 21733, MD: more cable coverage, similar speeds
- 17225, PA: more cable coverage, faster speeds
Zip Codes with Similar Populations
- 48471, MI: less cable coverage, slower speeds
- 45416, OH: less cable coverage, slower speeds
- 45628, OH: less cable coverage, slower speeds
- 45651, OH: less cable coverage, slower speeds
- 45710, OH: less cable coverage, slower speeds
- 46402, IN: more cable coverage, faster speeds
- 47330, IN: less cable coverage, slower speeds
- 48095, MI: more cable coverage, slower speeds
- 48133, MI: less cable coverage, slower speeds
- 48412, MI: less cable coverage, slower speeds