1 EXHIBIT 21 SUBSIDIARIES OF THE REGISTRANTS Subsidiaries of Iridium World Communications Ltd.: None Subsidiaries of Iridium LLC: Iridium Operating LLC Subsidiaries of Iridium Operating LLC: Iridium Capital Corporation Iridium Roaming LLC Iridium IP LLC Iridium Facilities Corporation Subsidiaries of Iridium Capital Corporation: None Subsidiaries of Iridium Roaming LLC: None Subsidiaries of Iridium IP LLC: None