shell:$ nslookup -timeout=2 -retry=1 'mx1planet.ingw.tn'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	mx1planet.ingw.tn
Address: 193.95.97.2
Name:	mx1planet.ingw.tn
Address: 2001:4350:2048:0:aaaa:c:0:2