shell:$ nslookup -timeout=2 -retry=1 'crl.sca1b.amazontrust.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	crl.sca1b.amazontrust.com
Address: 13.249.135.157
Name:	crl.sca1b.amazontrust.com
Address: 13.249.135.48
Name:	crl.sca1b.amazontrust.com
Address: 13.249.135.159
Name:	crl.sca1b.amazontrust.com
Address: 13.249.135.33