$dig ns rsi.cnr.it @dns.cnr.it

; <<>> DiG 9.10.6 <<>> ns rsi.cnr.it @dns.cnr.it
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6605
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 3, ADDITIONAL: 3
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;rsi.cnr.it.			IN	NS

;; AUTHORITY SECTION:
rsi.cnr.it.		86400	IN	NS	dns.cnr.it.
rsi.cnr.it.		86400	IN	NS	ddns.rsi.cnr.it.
rsi.cnr.it.		86400	IN	NS	nameserver.rm.cnr.it.

;; ADDITIONAL SECTION:
nameserver.rm.cnr.it.	86400	IN	A	150.146.204.5
dns.cnr.it.		86400	IN	A	150.146.205.10

;; Query time: 47 msec
;; SERVER: 150.146.205.10#53(150.146.205.10)
;; WHEN: Tue Mar 29 13:23:43 CEST 2022
;; MSG SIZE  rcvd: 136



$ dig ns rsi.cnr.it @ddns.rsi.cnr.it

; <<>> DiG 9.10.6 <<>> ns rsi.cnr.it @ddns.rsi.cnr.it
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 53083
;; flags: qr aa rd; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 3
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;rsi.cnr.it.			IN	NS

;; ANSWER SECTION:
rsi.cnr.it.		86400	IN	NS	ddns.rsi.cnr.it.
rsi.cnr.it.		86400	IN	NS	dns.cnr.it.
rsi.cnr.it.		86400	IN	NS	ddns2.rsi.cnr.it.
rsi.cnr.it.		86400	IN	NS	nameserver.rm.cnr.it.

;; ADDITIONAL SECTION:
ddns.rsi.cnr.it.	86400	IN	A	150.146.81.3
ddns2.rsi.cnr.it.	300	IN	A	150.146.81.33

;; Query time: 213 msec
;; SERVER: 150.146.81.3#53(150.146.81.3)
;; WHEN: Tue Mar 29 13:23:50 CEST 2022
;; MSG SIZE  rcvd: 156

adellam@altrove:~$ dig ns rsi.cnr.it @ddns2.rsi.cnr.it

; <<>> DiG 9.10.6 <<>> ns rsi.cnr.it @ddns2.rsi.cnr.it
;; global options: +cmd
;; connection timed out; no servers could be reached


$ dig ns rsi.cnr.it @nameserver.rm.cnr.it

; <<>> DiG 9.10.6 <<>> ns rsi.cnr.it @nameserver.rm.cnr.it
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45069
;; flags: qr aa rd; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 5
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;rsi.cnr.it.			IN	NS

;; ANSWER SECTION:
rsi.cnr.it.		86400	IN	NS	ddns.rsi.cnr.it.
rsi.cnr.it.		86400	IN	NS	nameserver.rm.cnr.it.
rsi.cnr.it.		86400	IN	NS	dns.cnr.it.
rsi.cnr.it.		86400	IN	NS	ddns2.rsi.cnr.it.

;; ADDITIONAL SECTION:
ddns.rsi.cnr.it.	86400	IN	A	150.146.81.3
ddns2.rsi.cnr.it.	300	IN	A	150.146.81.33
nameserver.rm.cnr.it.	86400	IN	A	150.146.204.5
dns.cnr.it.		86400	IN	A	150.146.205.10

;; Query time: 103 msec
;; SERVER: 150.146.204.5#53(150.146.204.5)
;; WHEN: Tue Mar 29 13:36:45 CEST 2022
;; MSG SIZE  rcvd: 188