https://www.cnbc.com/2018/03/30/spacex-falcon-9-iridium-5-mission-success.html

SpaceX succeeded in its sixth launch of 2018, putting the fifth batch of Iridium NEXT satellites into orbit using a previously-flown Falcon 9 rocket.

Launched Friday from the central coast of California, Elon Musk's rocket company has now put up 50 Iridium satellites for the next-generation constellation.