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: 3.162.103.105
Name:	d3blk76jcum585.cloudfront.net
Address: 3.162.103.101
Name:	d3blk76jcum585.cloudfront.net
Address: 3.162.103.38
Name:	d3blk76jcum585.cloudfront.net
Address: 3.162.103.96
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:25f3:3000:a:16c0:7d40:93a1
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:25f3:5e00:a:16c0:7d40:93a1
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:25f3:3400:a:16c0:7d40:93a1
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:25f3:2600:a:16c0:7d40:93a1
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:25f3:ae00:a:16c0:7d40:93a1
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:25f3:9c00:a:16c0:7d40:93a1
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:25f3:3c00:a:16c0:7d40:93a1
Name:	d3blk76jcum585.cloudfront.net
Address: 2600:9000:25f3:e00:a:16c0:7d40:93a1