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SpaceX's Satellite Internet Service Latency Comes in Under 20 Milliseconds

SpaceX disclosed the benchmarks in a presentation the company sent to the FCC last Friday. It also revealed the public beta for Starlink is coming to multiple US states.

 & Michael Kan Principal Reporter

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(Credit: SpaceX)

SpaceX says its satellite internet service, Starlink, has achieved a latency under 20 milliseconds, which is on par with ground-based broadband. 

SpaceX included the data in a presentation it sent to the FCC last Friday, which was spotted by Reddit users. The two benchmark tests, conducted using Ookla’s Speedtest.net service, show Starlink achieving a 102 to 103Mbps download rate, 40 to 42Mbps upload rate, and a latency of 18 to 19ms. (Note: Ookla is owned by Ziff Davis, PCMag.com's parent company.)

The presentation slide The presentation slide. The third Speedtest score appears to be a repeat. (Credit: SpaceX)

The presentation is also attached to a letter from SpaceX’s director of satellite policy, David Goldman, which says initial beta tests for Starlink are hitting below 30ms on latency. (For comparison, the average latency for fixed broadband in the US is 25ms, while the rate on mobile networks is at 48ms, according to Speedtest.net.) 

SpaceX made the filing a day after the company publicly boasted that Starlink is already achieving download rates higher than 100Mbps. The benchmarks provided to the FCC indicate the company isn’t exaggerating. 

Interestingly, both benchmarks occurred on June 30, and in Seattle, Washington, at a time when SpaceX only had about 500 Starlink satellites in orbit. The company now has more than 700 satellites around the planet, which will likely improve coverage and data speeds. 

Another slide from the presentation. (Credit: SpaceX)

According to the presentation, SpaceX is manufacturing about 120 Starlink satellites each month. The goal is to launch thousands of them into space to enable worldwide coverage and download speeds of 1Gbps. 

The company is also “on track” to produce thousands of user terminals consumers can hook up at their homes to receive the satellite-based broadband. In addition, SpaceX plans on gearing up for a public beta trial for users “across multiple US states.”

Another slide from the presentation. (Credit: Starlink)

SpaceX made the filing so that it can modify the position of its initial constellation of Starlink satellites, which is currently orbiting the planet at 550 kilometers, “to speed deployment to Polar Regions, including Alaska,” the company says in the presentation. 

SpaceX’s public beta trial is expected to take place in the coming weeks. The company is targeting an official launch before the year ends for users based in the northern US and lower Canada. The global rollout is scheduled for 2021.

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About Our Expert

Michael Kan

Michael Kan

Principal Reporter

My Experience

I've been a journalist for over 15 years. I got my start as a schools and cities reporter in Kansas City and joined PCMag in 2017, where I cover satellite internet services, cybersecurity, PC hardware, and more. I'm currently based in San Francisco, but previously spent over five years in China, covering the country's technology sector.

Since 2020, I've covered the launch and explosive growth of SpaceX's Starlink satellite internet service, writing 600+ stories on availability and feature launches, but also the regulatory battles over the expansion of satellite constellations, fights with rival providers like AST SpaceMobile and Amazon, and the effort to expand into satellite-based mobile service. I've combed through FCC filings for the latest news and driven to remote corners of California to test Starlink's cellular service.

I also cover cyber threats, from ransomware gangs to the emergence of AI-based malware. In 2024 and 2025, the FTC forced Avast to pay consumers $16.5 million for secretly harvesting and selling their personal information to third-party clients, as revealed in my joint investigation with Motherboard.

I also cover the PC graphics card market. Pandemic-era shortages led me to camp out in front of a Best Buy to get an RTX 3000. I'm now following how the AI-driven memory shortage is impacting the entire consumer electronics market. I'm always eager to learn more, so please jump in the comments with feedback and send me tips.

The Best Tech I've Had:

  • My first video game console: a Nintendo Famicom
  • I loved my Sega Saturn despite PlayStation's popularity.
  • The iPod Video I received as a gift in college
  • Xbox 360 FTW
  • The Galaxy Nexus was the first smartphone I was proud to own.
  • The PC desktop I built in 2013, which still works to this day.

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