Elon Musk’s satellite internet service, Starlink, returned to normal for most users following a brief outage on Monday, according to tracking website Downdetector.com. At its peak, more than 43,000 users in the U.S. reported issues, but by 1:15 a.m. ET (0515 GMT), that number had dropped below 1,000. Downdetector compiles outage reports from multiple sources to track disruptions. Starlink’s official website initially acknowledged the outage, stating, “Starlink is currently experiencing a service outage. Our team is investigating.” The notice has since been removed.

The outage had notable implications in Ukraine, where Starlink plays a critical role in military communications. Robert Brovdi, commander of Ukraine’s drone forces, reported that the disruption affected the entire frontline against Russia starting at 07:28 local time (0428 GMT). He added via Telegram that the service began returning approximately 30 minutes later.

Ukraine relies heavily on Starlink terminals for battlefield communications and some drone operations, with over 50,000 units currently deployed in the country. Starlink, operated by SpaceX, delivers internet through a constellation of low-Earth orbit satellites, making it a vital tool in remote areas and conflict zones. SpaceX has not immediately responded to requests for comment regarding the outage.