shell:$ nslookup -timeout=2 -retry=1 'crt.sca1b.amazontrust.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
Name:	crt.sca1b.amazontrust.com
Address: 13.225.193.75
Name:	crt.sca1b.amazontrust.com
Address: 13.225.193.69
Name:	crt.sca1b.amazontrust.com
Address: 13.225.193.206
Name:	crt.sca1b.amazontrust.com
Address: 13.225.193.6