Fiber Internet Service Providers in California

There are 82 fiber internet service providers in California as of our last data update in 2024.

Our count is based on FCC provider filings, updated manually to account for mergers, closures, and new company formations. ¹ The majority of fiber service providers in California are small, niche business and enterprise providers focused on a specific area or industry.

Of the 82 fiber internet providers in California, 33 offer residential services, and 79 offer business services. 30 providers in the state offer both residential and business service.

California fiber internet providers summary

Fiber internet expansion in California

While fiber to the home service is usually associated with local upstarts like Sonic or California municipal providers like Beverly Hills Fiber, the bulk of fiber buildout in California actually comes from major incumbents, primarily AT&T.

When AT&T merged with DirecTV in 2015, the FCC imposed a variety of requirements on the company in order to gain approval of what some saw as an anti-competitive merger. One of those was that they must expand to 12.5 Million new addresses. ²

In 2019, AT&T reported that they had built out fiber to 14.5 Million new homes, exceeding their FCC requirement by 2 Million. ³

This fiber to the home buildout was the largest fiber expansion in the later part of the 2010s, after Verizon Fios threw in the towel and sold their California network areas to Frontier 2016 and Google Fiber abandoned their attempt to build out fiber service in the LA area in 2017.

Top residential fiber internet providers in California

The five largest fiber internet providers in California by coverage area are:

• AT&T: residential speeds up to 1000 Mbps
• Frontier Communications Corporation: residential speeds up to 100 Mbps
• Sonic: residential speeds up to 10000 Mbps
• Vast Networks: residential speeds up to 1000 Mbps
• Charter Communications Inc: residential speeds up to 940 Mbps