shell:$ nslookup -timeout=2 -retry=1 'cache-ssl.celtra.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	cache-ssl.celtra.com
Address: 108.156.172.111
Name:	cache-ssl.celtra.com
Address: 108.156.172.116
Name:	cache-ssl.celtra.com
Address: 108.156.172.86
Name:	cache-ssl.celtra.com
Address: 108.156.172.14