J’ai choisi le dictionaire de Cambridge.
gre@coo:~$ dig dictionary.cambridge.org
; <<>> DiG 9.16.22-Debian <<>> dictionary.cambridge.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25370
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1472
;; QUESTION SECTION:
;dictionary.cambridge.org. IN A
;; ANSWER SECTION:
dictionary.cambridge.org. 287 IN CNAME prod.cdo.pitchleads.com.
prod.cdo.pitchleads.com. 17 IN A 54.72.24.212
;; Query time: 28 msec
;; SERVER: 192.168.1.254#53(192.168.1.254)
;; WHEN: Fri Dec 24 19:15:47 CET 2021
;; MSG SIZE rcvd: 106
gre@coo:~$
Ce que je comprend de la réponse de dig, c’est qu’une résolution de nom du domaine dictionary. cambridge.org est retourne le domaine prod.cdo.pitchleads.com dont l’IP associée est 54.72.24.212.
gre@coo:~$ ping 54.72.24.212
PING 54.72.24.212 (54.72.24.212) 56(84) bytes of data.
From 192.168.0.10 icmp_seq=1 Destination Host Unreachable
^C
--- 54.72.24.212 ping statistics ---
3 packets transmitted, 0 received, +1 errors, 100% packet loss, time 2032ms
Sinon, je n’ai pas compris ce que signifie « ip a » !