shell:$ nslookup -timeout=2 -retry=1 'optus.com.au'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
Name:	optus.com.au
Address: 23.48.247.245
Name:	optus.com.au
Address: 23.48.247.234
Name:	optus.com.au
Address: 23.48.247.242
Name:	optus.com.au
Address: 23.48.247.241