shell:$ nslookup -timeout=2 -retry=1 'simage2.pubmatic.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
simage2.pubmatic.com	canonical name = simage2v2.pubmnet.com.
simage2v2.pubmnet.com	canonical name = pug-sfo-bc.pubmnet.com.
Name:	pug-sfo-bc.pubmnet.com
Address: 104.36.113.107