In 90621 there are 8 residential internet providers covering 99.84% of the zip. The average home can get speeds up to 2,739 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.
Jump to Availability Maps
8 Internet Service Providers in 90621
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 90621 are not shown.
90621 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
Availability maps for all providers in 90621
Using the dropdown below, please select a provider. Green indicates nearly all homes have service, red indicates few homes have service, and blank indicates no service.
Please note some providers will take longer to load than others
Internet service is available in 99.84% of 90621. Using our interactive availability map, you can compare service areas for different providers, we include fiber, cable, DSL, or fixed wireless internet service for all providers who offer it. You will notice that some providers might be listed multiple times for each service. If you find no providers cover the location you're looking at, you can opt for satellite service. The most widely available provider is AT&T. Now you can call companies in 90621 with more confidence that they might be available.
How fast are internet speeds in 90621?
The map below shows maximum internet speeds by area in 90621.
Internet Speed Key
The average 90621 home can get up to 2,739 Mbps on their internet plan. For most people, the fastest download speed in the zip is 5,000 Mbps, which 43.43% 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 250 Mbps. See the internet provider details below for info about their speed and coverage in 90621.
Internet speeds tend to be faster in the central parts of 90621, and slower in the northwest areas of the zip.
What type of internet should I choose in 90621?
The fastest internet for you may vary based on where in 90621 you live. If speed is your main concern, cable will be the fastest internet in the zip.
- Fiber is the fastest internet type for 48.97% of 90621 homes.
- Cable is fastest for 50.69% 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 90621 homes.
Internet Market Health in 90621
Internet Competition Key
The map shows how competitive the 90621 internet service market is. Areas in green have more alternatives, areas in yellow have a few choices, and areas in red may have only one provider. More competition usually means faster speeds and better prices for you, the customer.
Below are quick facts on internet competition and market health in 90621 based on what connections the average home has availabile:
- Average number of internet service providers to a home: 8.4 (very healthy)
- Average types of service (fiber, cable, DSL, etc): 3.4 (very healthy)
- Average providers with broadband (25 Mbps+) speeds: 8.3 (very healthy)
Overall, competition is very healthy.
90621 internet customers have the ability to buy internet service from 1 to 11 different providers, depending on where they live. For different types of service, 90621 homes have between 1 and 4 options. The type(s) of service available are fixed wireless, cable, dsl, and fiber, though these may vary depending on the region within the zip.
When it comes to broadband download speeds faster than 25 Mbps, the situation is worse. 90621 internet customers who want faster speeds have between 1 and 11 choices of companies offering speeds up to or over 25 Mbps.
More internet companies with faster speeds means fewer monopolies and better prices for customers. In promoting a free market for internet, 90621 is doing quite well.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in 90621, along with details on where in 90621 and at what speeds.
Spectrum Cable in 90621, CA
Spectrum cable coverage
About 99.63%, or 36,301 people, have Spectrum cable internet available to them in the zip. The company covers the entire 90621 area. Spectrum is one of the largest internet service providers internet service providers in the US, with internet service available in most of 90621.
Spectrum cable download speeds
Spectrum is below average when comparing download speeds to all other internet providers in 90621. Versus other cable providers in the area, Spectrum cable is the fastest. There are no different maximum speeds throughout 90621. The fastest plan anyone in 90621 can order from Spectrum goes up to 1,000 Mbps, and all 90621 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum cable upload speeds
In 90621 download speeds tend to be faster than than upload speeds for Spectrum cable. Compared to other ISPs, Spectrum is below average where upload speeds are concerned, and the fastest compared to other 90621 cable providers. Spectrum offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 90621 is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
AT&T DSL in 90621, CA
AT&T DSL coverage
About 95.02%, or 34,621 people, have AT&T DSL internet available to them in the zip. The company covers the entire 90621 area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of 90621.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in 90621. Versus other DSL providers in the area, AT&T DSL is one of the fastest. There are 5 different maximum speeds throughout 90621. The fastest plan anyone in 90621 can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the zip-wide average maximum speed for 90621 customers is up to 83 Mbps.
Show all download speeds
- 67.1% up to 100.0 Mbps
- 11.3% up to 75.0 Mbps
- 11.1% up to 50.0 Mbps
- 3.8% up to 25.0 Mbps
- 6.8% up to 10.0 Mbps
AT&T DSL upload speeds
In 90621 download speeds tend to be faster than than upload speeds for AT&T DSL. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and one of the fastest compared to other 90621 DSL providers. AT&T offers 4 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 90621 is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, AT&T customers can get speeds up to 17 Mbps.
Show all upload speeds
- 78.3% up to 20.0 Mbps
- 11.1% up to 10.0 Mbps
- 3.8% up to 5.0 Mbps
- 6.8% up to 1.0 Mbps
EarthLink DSL in 90621, CA
EarthLink DSL coverage
About 95.02%, or 34,621 people, have EarthLink DSL internet available to them in the zip. The company covers the entire 90621 area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of 90621.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in 90621. Versus other DSL providers in the area, EarthLink DSL is one of the fastest. There are 5 different maximum speeds throughout 90621. The fastest plan anyone in 90621 can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the zip-wide average maximum speed for 90621 customers is up to 83 Mbps.
Show all download speeds
- 67.1% up to 100.0 Mbps
- 11.3% up to 75.0 Mbps
- 11.1% up to 50.0 Mbps
- 3.8% up to 25.0 Mbps
- 6.8% up to 10.0 Mbps
EarthLink DSL upload speeds
In 90621 download speeds tend to be faster than than upload speeds for EarthLink DSL. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and one of the fastest compared to other 90621 DSL providers. EarthLink offers 4 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 90621 is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, EarthLink customers can get speeds up to 17 Mbps.
Show all upload speeds
- 78.3% up to 20.0 Mbps
- 11.1% up to 10.0 Mbps
- 3.8% up to 5.0 Mbps
- 6.8% up to 1.0 Mbps
EarthLink Fiber in 90621, CA
EarthLink fiber coverage
About 48.35%, or 17,617 people, have EarthLink fiber internet available to them in the zip. The company covers the southwest, central, south, north, west, northeast, east, and southeast 90621 area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in some of 90621.
EarthLink fiber download speeds
EarthLink is one of the fastest when comparing download speeds to all other internet providers in 90621. Versus other fiber providers in the area, EarthLink fiber is one of the fastest. There are 2 different maximum speeds throughout 90621. The fastest plan anyone in 90621 can order from EarthLink goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the zip-wide average maximum speed for 90621 customers is up to 4,593 Mbps.
Show all download speeds
- 89.8% up to 5,000.0 Mbps
- 10.2% up to 1,000.0 Mbps
EarthLink fiber upload speeds
In 90621 download speeds tend to be equal to than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is one of the fastest where upload speeds are concerned, and one of the fastest compared to other 90621 fiber providers. EarthLink offers 2 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 90621 is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, EarthLink customers can get speeds up to 4,593 Mbps.
Show all upload speeds
- 89.8% up to 5,000.0 Mbps
- 10.2% up to 1,000.0 Mbps
AT&T Fiber in 90621, CA
AT&T fiber coverage
About 48.35%, or 17,617 people, have AT&T fiber internet available to them in the zip. The company covers the southwest, central, south, north, west, northeast, east, and southeast 90621 area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in some of 90621.
AT&T fiber download speeds
AT&T is one of the fastest when comparing download speeds to all other internet providers in 90621. Versus other fiber providers in the area, AT&T fiber is one of the fastest. There are 2 different maximum speeds throughout 90621. The fastest plan anyone in 90621 can order from AT&T goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the zip-wide average maximum speed for 90621 customers is up to 4,593 Mbps.
Show all download speeds
- 89.8% up to 5,000.0 Mbps
- 10.2% up to 1,000.0 Mbps
AT&T fiber upload speeds
In 90621 download speeds tend to be equal to than upload speeds for AT&T fiber. Compared to other ISPs, AT&T is one of the fastest where upload speeds are concerned, and one of the fastest compared to other 90621 fiber providers. AT&T offers 2 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 90621 is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, AT&T customers can get speeds up to 4,593 Mbps.
Show all upload speeds
- 89.8% up to 5,000.0 Mbps
- 10.2% up to 1,000.0 Mbps
Spectrum Fiber in 90621, CA
Spectrum fiber coverage
About 3.36%, or 1,223 people, have Spectrum fiber internet available to them in the zip. The company covers the east and northeast 90621 area. Spectrum is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of 90621.
Spectrum fiber download speeds
Spectrum is below average when comparing download speeds to all other internet providers in 90621. Versus other fiber providers in the area, Spectrum fiber is one of the slowest. There are no different maximum speeds throughout 90621. The fastest plan anyone in 90621 can order from Spectrum goes up to 1,000 Mbps, and all 90621 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum fiber upload speeds
In 90621 download speeds tend to be faster than than upload speeds for Spectrum fiber. Compared to other ISPs, Spectrum is below average where upload speeds are concerned, and the slowest compared to other 90621 fiber providers. Spectrum offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 90621 is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
T-Mobile Home Internet Fixed Wireless in 90621, CA
T-Mobile Home Internet fixed wireless coverage
About 99.67%, or 36,315 people, have T-Mobile Home Internet fixed wireless internet available to them in the zip. The company covers the entire 90621 area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in most of 90621.
T-Mobile Home Internet fixed wireless download speeds
T-Mobile Home Internet is below average when comparing download speeds to all other internet providers in 90621. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is below average. There are 2 different maximum speeds throughout 90621. The fastest plan anyone in 90621 can order from T-Mobile Home Internet goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the zip-wide average maximum speed for 90621 customers is up to 66 Mbps.
Show all download speeds
- 54.9% up to 100.0 Mbps
- 45.1% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In 90621 download speeds tend to be faster than than upload speeds for T-Mobile Home Internet fixed wireless. Compared to other ISPs, T-Mobile Home Internet is below average where upload speeds are concerned, and below average compared to other 90621 fixed wireless providers. T-Mobile Home Internet offers 2 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 90621 is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, T-Mobile Home Internet customers can get speeds up to 12 Mbps.
Show all upload speeds
- 54.9% up to 20.0 Mbps
- 45.1% up to 3.0 Mbps
Cosmo Network Solutions Fixed Wireless in 90621, CA
Cosmo Network Solutions fixed wireless coverage
About 96.48%, or 35,153 people, have Cosmo Network Solutions fixed wireless internet available to them in the zip. The company covers the entire 90621 area. Cosmo Network Solutions is a large internet service provider internet service providers in the US, with internet service available in most of 90621.
Cosmo Network Solutions fixed wireless download speeds
Cosmo Network Solutions is below average when comparing download speeds to all other internet providers in 90621. Versus other fixed wireless providers in the area, Cosmo Network Solutions fixed wireless is above average. There are 2 different maximum speeds throughout 90621. The fastest plan anyone in 90621 can order from Cosmo Network Solutions goes up to 250 Mbps, the slowest package only goes up to 50 Mbps, and the zip-wide average maximum speed for 90621 customers is up to 247 Mbps.
Show all download speeds
- 98.7% up to 250.0 Mbps
- 1.3% up to 50.0 Mbps
Cosmo Network Solutions fixed wireless upload speeds
In 90621 download speeds tend to be faster than than upload speeds for Cosmo Network Solutions fixed wireless. Compared to other ISPs, Cosmo Network Solutions is below average where upload speeds are concerned, and the fastest compared to other 90621 fixed wireless providers. Cosmo Network Solutions offers 2 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 90621 is up to 100 Mbps. Some customers have slower plan choices, which only go up to 25 Mbps. On average, Cosmo Network Solutions customers can get speeds up to 99 Mbps.
Show all upload speeds
- 98.7% up to 100.0 Mbps
- 1.3% up to 25.0 Mbps
Verizon Fixed Wireless in 90621, CA
Verizon fixed wireless coverage
About 92.93%, or 33,860 people, have Verizon fixed wireless internet available to them in the zip. The company covers the entire 90621 area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in most of 90621.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in 90621. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout 90621. The fastest plan anyone in 90621 can order from Verizon goes up to 300 Mbps, and all 90621 customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In 90621 download speeds tend to be faster than than upload speeds for Verizon fixed wireless. Compared to other ISPs, Verizon is below average where upload speeds are concerned, and below average compared to other 90621 fixed wireless providers. Verizon offers no different upload speeds across the zip. The fastest upload speed available to anyone from this ISP in 90621 is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
EarthLink Fixed Wireless in 90621, CA
EarthLink fixed wireless coverage
About 80.28%, or 29,249 people, have EarthLink fixed wireless internet available to them in the zip. The company covers the entire 90621 area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in much of 90621.
EarthLink fixed wireless download speeds
EarthLink is one of the slowest when comparing download speeds to all other internet providers in 90621. Versus other fixed wireless providers in the area, EarthLink fixed wireless is one of the slowest. There are 2 different maximum speeds throughout 90621. The fastest plan anyone in 90621 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 90621 customers is up to 46 Mbps.
Show all download speeds
- 27.8% up to 100.0 Mbps
- 72.2% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In 90621 download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is one of the slowest where upload speeds are concerned, and one of the slowest compared to other 90621 fixed wireless providers. EarthLink offers 2 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 90621 is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, EarthLink customers can get speeds up to 7.7 Mbps.
Show all upload speeds
- 27.8% up to 20.0 Mbps
- 72.2% up to 3.0 Mbps
AT&T Fixed Wireless in 90621, CA
AT&T fixed wireless coverage
About 80.28%, or 29,249 people, have AT&T fixed wireless internet available to them in the zip. The company covers the entire 90621 area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in much of 90621.
AT&T fixed wireless download speeds
AT&T is one of the slowest when comparing download speeds to all other internet providers in 90621. Versus other fixed wireless providers in the area, AT&T fixed wireless is one of the slowest. There are 2 different maximum speeds throughout 90621. The fastest plan anyone in 90621 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 90621 customers is up to 46 Mbps.
Show all download speeds
- 27.8% up to 100.0 Mbps
- 72.2% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In 90621 download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is one of the slowest where upload speeds are concerned, and one of the slowest compared to other 90621 fixed wireless providers. AT&T offers 2 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 90621 is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, AT&T customers can get speeds up to 7.7 Mbps.
Show all upload speeds
- 27.8% up to 20.0 Mbps
- 72.2% up to 3.0 Mbps
90621 Internet by Area
This information is most helpful to those looking for homes or considering moving to 90621 or any of the areas nearby.
How does internet in 90621 compare to the rest of California?
Internet speeds in 90621 are slower versus the average speeds in California: 3,631 Mbps in California versus 2,739 Mbps in the zip. The state has similar internet availability compared to the zip. Average internet coverage in California is 98.73% versus 99.84% in 90621.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around 90621 are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does internet service 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
- 92833, CA: more internet coverage, faster speeds
- 90620, CA: less internet coverage, faster speeds
- 90638, CA: less internet coverage, faster speeds
- 92801, CA: less internet coverage, faster speeds
- 90623, CA: more internet coverage, slower speeds
- 92832, CA: more internet coverage, faster speeds
- 92804, CA: more internet coverage, faster speeds
- 90604, CA: less internet coverage, faster speeds
- 90703, CA: more internet coverage, faster speeds
- 90630, CA: more internet coverage, slower speeds
Zip Codes with Similar Populations
- 17111, PA: less internet coverage, slower speeds
- 29063, SC: less internet coverage, faster speeds
- 80004, CO: more internet coverage, faster speeds
- 21227, MD: more internet coverage, slower speeds
- 94555, CA: less internet coverage, slower speeds
- 94040, CA: less internet coverage, faster speeds
- 40511, KY: less internet coverage, faster speeds
- 53211, WI: less internet coverage, faster speeds
- 89142, NV: less internet coverage, faster speeds
- 77079, TX: more internet coverage, faster speeds