In Altadena there are 3 residential Fiber providers covering 91.79% of the city. The average home can get speeds up to 4,982 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 Fiber internet providers in Altadena, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Altadena, CA please click below.
Altadena, CA Availability Maps
Fiber Internet Service Providers in Altadena
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 Altadena are not shown.
Altadena 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 Altadena is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 91.79% of Altadena. Areas in green have fiber 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 Altadena above to see who has service at your home.
How fast is fiber internet in Altadena?
The map below shows maximum fiber internet speeds by area in Altadena.
Fiber Internet Speed Key
The average Altadena home can get up to 4,982 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 5,000 Mbps, which 91.36% 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 1,000 Mbps. See the internet provider details below for info about their speed and coverage in Altadena.
Fiber internet speeds tend to be faster in the southeast parts of Altadena, and slower in the central areas of the city.
Is fiber the fastest internet I can get in Altadena?
The fastest internet for you may vary based on where in Altadena you live. In general, cable competes most often with fiber in the city.
- Fiber is the fastest internet type for 91.79% of Altadena homes.
- Cable is fastest for 7.61% of the city.
- 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 Altadena homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Altadena, along with details on where in Altadena and at what speeds.
EarthLink Fiber in Altadena, CA
EarthLink fiber coverage
About 91.36%, or 33,937 people, have EarthLink fiber internet available to them in the city. The company covers the entire Altadena area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of Altadena.
EarthLink fiber download speeds
EarthLink is one of the fastest when comparing download speeds to all other internet providers in Altadena. Versus other fiber providers in the area, EarthLink fiber is one of the fastest. There are no different maximum speeds throughout Altadena. The fastest plan anyone in Altadena can order from EarthLink goes up to 5,000 Mbps, and all Altadena customers can get this speed.
Show all download speeds
- 100.0% up to 5,000.0 Mbps
EarthLink fiber upload speeds
In Altadena 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 Altadena fiber providers. EarthLink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Altadena is up to 5,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 5,000.0 Mbps
AT&T Fiber in Altadena, CA
AT&T fiber coverage
About 91.36%, or 33,937 people, have AT&T fiber internet available to them in the city. The company covers the entire Altadena area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of Altadena.
AT&T fiber download speeds
AT&T is one of the fastest when comparing download speeds to all other internet providers in Altadena. Versus other fiber providers in the area, AT&T fiber is one of the fastest. There are no different maximum speeds throughout Altadena. The fastest plan anyone in Altadena can order from AT&T goes up to 5,000 Mbps, and all Altadena customers can get this speed.
Show all download speeds
- 100.0% up to 5,000.0 Mbps
AT&T fiber upload speeds
In Altadena 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 Altadena fiber providers. AT&T offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Altadena is up to 5,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 5,000.0 Mbps
Spectrum Fiber in Altadena, CA
Spectrum fiber coverage
About 3.05%, or 1,133 people, have Spectrum fiber internet available to them in the city. The company covers the central, west, and north Altadena 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 Altadena.
Spectrum fiber download speeds
Spectrum is below average when comparing download speeds to all other internet providers in Altadena. Versus other fiber providers in the area, Spectrum fiber is the slowest. There are no different maximum speeds throughout Altadena. The fastest plan anyone in Altadena can order from Spectrum goes up to 1,000 Mbps, and all Altadena customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum fiber upload speeds
In Altadena 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 Altadena fiber providers. Spectrum offers 2 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 Altadena is up to 500 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, Spectrum customers can get speeds up to 357 Mbps.
Show all upload speeds
- 69.3% up to 500.0 Mbps
- 30.7% up to 35.0 Mbps
Altadena Fiber by Area
This information is most helpful to those looking for homes or considering moving to Altadena or any of the areas nearby.
How does fiber internet in Altadena compare to the rest of California?
Fiber internet speeds in Altadena are much faster versus the average speeds in California: 0.00 Mbps in California versus 4,982 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in California is 0.00% versus 91.79% in Altadena.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Altadena are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does fiber 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
- Pasadena, CA: less fiber coverage, slower speeds
- Kinneloa Mesa, CA: more fiber coverage, slower speeds
- La Canada Flintridge, CA: less fiber coverage, faster speeds
- San Marino, CA: less fiber coverage, slower speeds
- East Pasadena, CA: less fiber coverage, slower speeds
- Sierra Madre, CA: more fiber coverage, faster speeds
- Montrose, CA: less fiber coverage, slower speeds
- South Pasadena, CA: less fiber coverage, slower speeds
- La Crescenta-Montrose, CA: less fiber coverage, slower speeds
- Glendale, CA: less fiber coverage, slower speeds
Cities with Similar Populations
- Arnold, MO: less fiber coverage, slower speeds
- Okeechobee, FL: less fiber coverage, slower speeds
- Sewell, NJ: less fiber coverage, slower speeds
- Newburgh, IN: less fiber coverage, slower speeds
- Natick, MA: more fiber coverage, slower speeds
- Manhattan Beach, CA: more fiber coverage, faster speeds
- Lewiston, ME: less fiber coverage, slower speeds
- Carlsbad, NM: less fiber coverage, slower speeds
- Bristol, TN: more fiber coverage, slower speeds
- Southampton, PA: more fiber coverage, slower speeds