Iridium OPEN PORT Maintenance Advisory Begin Time: Tue, Jul 31, 2018 21:00 (GMT) End Time: Tue, Jul 31, 2018 22:00 (GMT)

Begin Time: Tue, Jul 31, 2018 21:00 (GMT) End Time: Tue, Jul 31, 2018 22:00 (GMT)

Service(s) Impacted: Iridium OpenPort® Services – Iridium OpenPort® Data , Iridium OpenPort® Services – Iridium OpenPort® Data Monitoring and Iridium OpenPort® Services – Iridium OpenPort® Voice

This is a maintenance advisory from Iridium. During the time frame provided, Iridium will be performing maintenance on the above mentioned services. Customers may experience degraded, intermittent or even a complete loss of service during the indicated maintenance window. Additional notification will be provided to alert you of any changes in status that occur during this maintenance event.