shell:$ nslookup -timeout=2 -retry=1 'crt.sca0a.amazontrust.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	crt.sca0a.amazontrust.com
Address: 3.167.180.35
Name:	crt.sca0a.amazontrust.com
Address: 3.167.180.79
Name:	crt.sca0a.amazontrust.com
Address: 3.167.180.98
Name:	crt.sca0a.amazontrust.com
Address: 3.167.180.75