shell:$ nslookup -timeout=2 -retry=1 'pub.sentry.web.garenanow.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
pub.sentry.web.garenanow.com	canonical name = gretools.sea.k8s.garenanow.com.
Name:	gretools.sea.k8s.garenanow.com
Address: 148.222.67.88