named(8) on macOS
The text 83a22a1edc38, 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.
Internet domain name server
Flags it lists
-
-4 -
-6 -
-E -
-S -
-V -
-c -
-d -
-f -
-g -
-m -
-n -
-p -
-s -
-t -
-u -
-v -
-x