ddns-confgen(8) on macOS
The text 5f915c23733c, as Mac OS X 10.8.1, Mac OS X 10.8, Mac OS X 10.7.4, Mac OS X 10.7.3, Mac OS X 10.7.2, Mac OS X 10.7.1, Mac OS X 10.7 shipped it.
ddns key generation tool
Flags it lists
-
-a -
-h -
-k -
-q -
-r -
-s -
-z