shell:$ nslookup -timeout=2 -retry=1 'exchange.telstra.com.au'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
exchange.telstra.com.au	canonical name = d3blk76jcum585.cloudfront.net.
Name:	d3blk76jcum585.cloudfront.net
Address: 3.160.22.25
Name:	d3blk76jcum585.cloudfront.net
Address: 3.160.22.121
Name:	d3blk76jcum585.cloudfront.net
Address: 3.160.22.66
Name:	d3blk76jcum585.cloudfront.net
Address: 3.160.22.128
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:24bd:aa00:a:16c0:7d40:93a1
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:24bd:8000:a:16c0:7d40:93a1
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:24bd:4a00:a:16c0:7d40:93a1
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:24bd:dc00:a:16c0:7d40:93a1
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:24bd:c00:a:16c0:7d40:93a1
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:24bd:ae00:a:16c0:7d40:93a1
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:24bd:7400:a:16c0:7d40:93a1
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:24bd:ce00:a:16c0:7d40:93a1