shell:$ nslookup -timeout=2 -retry=1 'mx2email.ingw.tn' Server: 75.98.161.224 Address: 75.98.161.224#53 Non-authoritative answer: Name: mx2email.ingw.tn Address: 196.203.249.162 Name: mx2email.ingw.tn Address: 2001:4350:1:1:aaaa:a:0:2