shell:$ nslookup -timeout=2 -retry=1 'mx203.inbound-mx.net'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	mx203.inbound-mx.net
Address: 147.182.130.78
Name:	mx203.inbound-mx.net
Address: 147.182.160.18
Name:	mx203.inbound-mx.net
Address: 164.90.197.79
Name:	mx203.inbound-mx.net
Address: 147.182.180.139
Name:	mx203.inbound-mx.net
Address: 164.90.197.162
Name:	mx203.inbound-mx.net
Address: 164.90.197.105
Name:	mx203.inbound-mx.net
Address: 147.182.189.184
Name:	mx203.inbound-mx.net
Address: 164.90.197.143