shell:$ nslookup -timeout=2 -retry=1 'ocsp.rootca1.amazontrust.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	ocsp.rootca1.amazontrust.com
Address: 18.160.229.103
Name:	ocsp.rootca1.amazontrust.com
Address: 2600:9000:24d3::566:22d5:d9e1
Name:	ocsp.rootca1.amazontrust.com
Address: 2600:9000:24d3:8c00:0:566:22d5:d9e1
Name:	ocsp.rootca1.amazontrust.com
Address: 2600:9000:24d3:7200:0:566:22d5:d9e1
Name:	ocsp.rootca1.amazontrust.com
Address: 2600:9000:24d3:ae00:0:566:22d5:d9e1
Name:	ocsp.rootca1.amazontrust.com
Address: 2600:9000:24d3:1600:0:566:22d5:d9e1
Name:	ocsp.rootca1.amazontrust.com
Address: 2600:9000:24d3:600:0:566:22d5:d9e1
Name:	ocsp.rootca1.amazontrust.com
Address: 2600:9000:24d3:6c00:0:566:22d5:d9e1
Name:	ocsp.rootca1.amazontrust.com
Address: 2600:9000:24d3:d000:0:566:22d5:d9e1