b

b'
; <<>> DiG 9.11.3-1ubuntu1.15-Ubuntu <<>> 2001:19f0:5401:110e:5400:2ff:feb9:f9f
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 22812
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;2001:19f0:5401:110e:5400:2ff:feb9:f9f. IN A

;; Query time: 0 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Fri Feb 18 23:45:05 CST 2022
;; MSG SIZE  rcvd: 66

'

b'Host f.9.f.0.9.b.e.f.f.f.2.0.0.0.4.5.e.0.1.1.1.0.4.5.0.f.9.1.1.0.0.2.ip6.arpa not found: 3(NXDOMAIN)
'

Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find f.9.f.0.9.b.e.f.f.f.2.0.0.0.4.5.e.0.1.1.1.0.4.5.0.f.9.1.1.0.0.2.ip6.arpa: NXDOMAIN