dig(1) on Linux
The text 4a181ceaf4dc, as Debian 11 (Bullseye) shipped it.
DNS lookup utility
Flags it lists
-
-4 -
-6 -
-b -
-c -
-f -
-k -
-m -
-p -
-q -
-r -
-t -
-u -
-v -
-x -
-y