delv(1) on Linux
The text 9c2d5e37a7f7, as Debian 11 (Bullseye) shipped it.
DNS lookup and validation utility
Flags it lists
-
-4 -
-6 -
-a -
-b -
-c -
-d -
-h -
-i -
-m -
-p -
-q -
-t -
-v -
-x