Your satellite SIM details can be found in a number of ways, depending on which Bullitt Satellite enabled product you own.

Your ICCID and Activation Code should be included within the original packaging that came with your device.

Alternatively, you can open the Bullitt Satellite Messenger app and connect your device via Bluetooth (if applicable), then navigate to 'Profile' within the sidebar menu to show your IMSI or ICCID. These details can be used to register your device at https://app.bullitt.com