In 91377 there are 2 residential DSL providers covering 97.37% of the zip. The average home can get speeds up to 90 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 91377, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in 91377, CA please click below.
DSL Internet Service Providers in 91377
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 91377 are not shown.
91377 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 91377 is DSL internet available?
DSL Internet Availability Key
DSL is available in 97.37% of 91377. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is AT&T. Call one of the companies with service in 91377 above to see who has service at your home.
How fast is DSL internet in 91377?
The map below shows maximum DSL internet speeds by area in 91377.
DSL Internet Speed Key
The average 91377 home can get up to 90 Mbps on their DSL internet plan. The fastest DSL download speed in the zip is 100 Mbps, which 70.56% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, less than 1% of homes can only purchase plans up to 25 Mbps. See the internet provider details below for info about their speed and coverage in 91377.
DSL internet speeds tend to be faster in the south parts of 91377, and slower in the north areas of the zip.
Is DSL the fastest internet I can get in 91377?
The fastest internet for you may vary based on where in 91377 you live. In general, cable competes most often with DSL in the zip.
- Fiber is the fastest internet type for less than 1% of 91377 homes.
- Cable is fastest for 100.00% of the zip.
- 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 91377 homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in 91377, along with details on where in 91377 and at what speeds.
AT&T DSL in 91377, CA
AT&T DSL coverage
About 97.37%, or 13,532 people, have AT&T DSL internet available to them in the zip. The company covers the entire 91377 area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of 91377.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in 91377. Versus other DSL providers in the area, AT&T DSL is one of the fastest. There are 4 different maximum speeds throughout 91377. The fastest plan anyone in 91377 can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the zip-wide average maximum speed for 91377 customers is up to 90 Mbps.
Show all download speeds
- 72.5% up to 100.0 Mbps
- 15.0% up to 75.0 Mbps
- 12.0% up to 50.0 Mbps
- 0.5% up to 25.0 Mbps
AT&T DSL upload speeds
In 91377 download speeds tend to be faster than than upload speeds for AT&T DSL. Compared to other ISPs, AT&T is average where upload speeds are concerned, and one of the fastest compared to other 91377 DSL providers. AT&T offers 3 different upload speeds across the zip, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in 91377 is up to 20 Mbps. Some customers have slower plan choices, which only go up to 5.0 Mbps. On average, AT&T customers can get speeds up to 19 Mbps.
Show all upload speeds
- 87.5% up to 20.0 Mbps
- 12.0% up to 10.0 Mbps
- 0.5% up to 5.0 Mbps
EarthLink DSL in 91377, CA
EarthLink DSL coverage
About 97.37%, or 13,532 people, have EarthLink DSL internet available to them in the zip. The company covers the entire 91377 area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of 91377.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in 91377. Versus other DSL providers in the area, EarthLink DSL is one of the fastest. There are 4 different maximum speeds throughout 91377. The fastest plan anyone in 91377 can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the zip-wide average maximum speed for 91377 customers is up to 90 Mbps.
Show all download speeds
- 72.5% up to 100.0 Mbps
- 15.0% up to 75.0 Mbps
- 12.0% up to 50.0 Mbps
- 0.5% up to 25.0 Mbps
EarthLink DSL upload speeds
In 91377 download speeds tend to be faster than than upload speeds for EarthLink DSL. Compared to other ISPs, EarthLink is average where upload speeds are concerned, and one of the fastest compared to other 91377 DSL providers. EarthLink offers 3 different upload speeds across the zip, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in 91377 is up to 20 Mbps. Some customers have slower plan choices, which only go up to 5.0 Mbps. On average, EarthLink customers can get speeds up to 19 Mbps.
Show all upload speeds
- 87.5% up to 20.0 Mbps
- 12.0% up to 10.0 Mbps
- 0.5% up to 5.0 Mbps
91377 DSL by Area
This information is most helpful to those looking for homes or considering moving to 91377 or any of the areas nearby.
How does DSL internet in 91377 compare to the rest of California?
DSL internet speeds in 91377 are much faster versus the average speeds in California: 0.00 Mbps in California versus 90 Mbps in the zip. The state has similar DSL availability compared to the zip. Average DSL coverage in California is 0.00% versus 97.37% in 91377.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around 91377 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
- 91301, CA: less DSL coverage, slower speeds
- 91362, CA: less DSL coverage, slower speeds
- 91361, CA: less DSL coverage, slower speeds
- 93065, CA: less DSL coverage, slower speeds
- 91360, CA: less DSL coverage, slower speeds
- 91302, CA: less DSL coverage, slower speeds
- 91307, CA: less DSL coverage, slower speeds
- 93063, CA: less DSL coverage, slower speeds
- 91367, CA: less DSL coverage, slower speeds
- 93021, CA: less DSL coverage, slower speeds
Zip Codes with Similar Populations
- 15116, PA: less DSL coverage, slower speeds
- 19522, PA: less DSL coverage, slower speeds
- 18634, PA: less DSL coverage, slower speeds
- 18407, PA: less DSL coverage, slower speeds
- 15370, PA: less DSL coverage, slower speeds
- 15226, PA: less DSL coverage, slower speeds
- 12528, NY: less DSL coverage, slower speeds
- 06795, CT: less DSL coverage, slower speeds
- 05201, VT: less DSL coverage, slower speeds
- 77488, TX: less DSL coverage, slower speeds