╰─$ dig github.com -t NS

; <<>> DiG 9.13.0 <<>> github.com -t NS
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 65090
;; flags: qr rd ra; QUERY: 1, ANSWER: 8, AUTHORITY: 0, ADDITIONAL: 6

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4000
; COOKIE: 46d52d81af040ddf (echoed)
;; QUESTION SECTION:
;github.com.			IN	NS

;; ANSWER SECTION:
github.com.		900	IN	NS	ns4.p16.dynect.net.
github.com.		900	IN	NS	ns-421.awsdns-52.com.
github.com.		900	IN	NS	ns-1283.awsdns-32.org.
github.com.		900	IN	NS	ns2.p16.dynect.net.
github.com.		900	IN	NS	ns3.p16.dynect.net.
github.com.		900	IN	NS	ns-1707.awsdns-21.co.uk.
github.com.		900	IN	NS	ns-520.awsdns-01.net.
github.com.		900	IN	NS	ns1.p16.dynect.net.

;; ADDITIONAL SECTION:
ns-421.awsdns-52.com.	86400	IN	A	205.251.193.165
ns-1283.awsdns-32.org.	86400	IN	A	205.251.197.3
ns-1707.awsdns-21.co.uk. 86400	IN	A	205.251.198.171
ns-520.awsdns-01.net.	86400	IN	A	205.251.194.8
ns1.p16.dynect.net.	86394	IN	A	208.78.70.16

;; Query time: 15 msec
;; SERVER: 172.21.103.5#53(172.21.103.5)
;; WHEN: ven. juin 08 10:04:52 CEST 2018
;; MSG SIZE  rcvd: 351