named-checkzone(8) on macOS
The text ed55d84c4e86, as Mac OS X 10.6.8, Mac OS X 10.6.7, Mac OS X 10.6.6, Mac OS X 10.6.5, Mac OS X 10.6.4, Mac OS X 10.6.3, Mac OS X 10.6.2, Mac OS X 10.6.1, Mac OS X 10.6 shipped it.
zone file validity checking or converting tool
Flags it lists
-
-D -
-F -
-M -
-S -
-W -
-c -
-d -
-f -
-h -
-i -
-j -
-k -
-m -
-n -
-o -
-q -
-s -
-t -
-v -
-w