dig  +trace +recurse +all +qr -t yahoo.com
;; Warning, ignoring invalid type yahoo.com

; <<>> DiG 9.8.1-P1 <<>> +trace +recurse +all +qr -t yahoo.com
;; global options: +cmd
;; Sending:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15040
;; flags:; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;.                              IN      NS

;; connection timed out; no servers could be reached