In 78021 there is 1 residential DSL provider covering 45.65% of the zip. The average home can get speeds up to 10 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 78021, TX.
To see availability maps for all providers including fiber, cable, DSL, and more in 78021, TX please click below.
DSL Internet Service Provider in 78021
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 78021 are not shown.
78021 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 78021 is DSL internet available?
DSL Internet Availability Key
DSL is available in 45.65% of 78021. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is VTX1 Companies. Call one of the companies with service in 78021 above to see who has service at your home.
How fast is DSL internet in 78021?
The map below shows maximum DSL internet speeds by area in 78021.
DSL Internet Speed Key
The average 78021 home can get up to 10 Mbps on their DSL internet plan. The fastest DSL download speed in the zip is 10 Mbps, which 45.65% of residents can get.
Is DSL the fastest internet I can get in 78021?
The fastest internet for you may vary based on where in 78021 you live. In general, fiber competes most often with DSL in the zip.
- Fiber is the fastest internet type for 84.06% of 78021 homes.
- Cable is fastest for less than 1% of the zip.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 15.94%.
- Satellite internet may be the only option for less than 1% of 78021 homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in 78021, along with details on where in 78021 and at what speeds.
VTX1 Companies DSL in 78021, TX
VTX1 Companies DSL coverage
About 45.65%, or 63 people, have VTX1 Companies DSL internet available to them in the zip. The company covers the southwest, northeast, west, southeast, north, central, and northwest 78021 area. VTX1 Companies is a large internet service provider internet service providers in the US, with internet service available in some of 78021.
VTX1 Companies DSL download speeds
VTX1 Companies is the slowest when comparing download speeds to all other internet providers in 78021. Versus other DSL providers in the area, VTX1 Companies DSL is the fastest. There are no different maximum speeds throughout 78021. The fastest plan anyone in 78021 can order from VTX1 Companies goes up to 10 Mbps, and all 78021 customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
VTX1 Companies DSL upload speeds
In 78021 download speeds tend to be faster than than upload speeds for VTX1 Companies DSL. Compared to other ISPs, VTX1 Companies is the slowest where upload speeds are concerned, and the fastest compared to other 78021 DSL providers. VTX1 Companies offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 78021 is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
78021 DSL by Area
This information is most helpful to those looking for homes or considering moving to 78021 or any of the areas nearby.
How does DSL internet in 78021 compare to the rest of Texas?
DSL internet speeds in 78021 are much faster versus the average speeds in Texas: 0.00 Mbps in Texas versus 10 Mbps in the zip. The state has similar DSL availability compared to the zip. Average DSL coverage in Texas is 0.00% versus 45.65% in 78021.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around 78021 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 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
- 78072, TX: more DSL coverage, similar speeds
- 78014, TX: more DSL coverage, similar speeds
- 78007, TX: less DSL coverage, similar speeds
- 78071, TX: less DSL coverage, similar speeds
- 78830, TX: more DSL coverage, similar speeds
- 78022, TX: less DSL coverage, similar speeds
- 78836, TX: less DSL coverage, similar speeds
- 78827, TX: more DSL coverage, similar speeds
- 78834, TX: more DSL coverage, similar speeds
- 78142, TX: less DSL coverage, similar speeds
Zip Codes with Similar Populations
- 46931, IN: more DSL coverage, similar speeds
- 46946, IN: more DSL coverage, faster speeds
- 47160, IN: more DSL coverage, faster speeds
- 47683, IN: more DSL coverage, faster speeds
- 49883, MI: less DSL coverage, similar speeds
- 74082, OK: less DSL coverage, faster speeds
- 75764, TX: more DSL coverage, faster speeds
- 46155, IN: more DSL coverage, similar speeds
- 77617, TX: more DSL coverage, faster speeds
- 78371, TX: more DSL coverage, similar speeds