https://techcrunch.com/2020/01/06/spacex-successfully-launches-60-more-satellites-for-its-starlink-broadband-internet-constellation/

SpaceX successfully launched its third batch of 60 Starlink satellites – the second designated ‘production’ hardware, after launching an initial group of 60 early in 2019 to test the technology. This group launched aboard a Falcon 9 with a first stage booster that has already seen service in three previous missions, including two in 2019, one of which was the first bulk Starlink mission in May 2019.

This launch took off from Cape Canaveral Air Force Station in Florida, and delivered the satellites to an orbit 290 km (around 180 miles) above Earth, and then the satellites will perform diagnostics to ensure they’re in proper working order before moving to their final target orbits using their own onboard thrusters.