shell:$ nslookup -timeout=2 -retry=1 'image2.pubmatic.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
image2.pubmatic.com	canonical name = image2v2.pubmnet.com.
image2v2.pubmnet.com	canonical name = nje1pug-paira.pubmatic.com.
Name:	nje1pug-paira.pubmatic.com
Address: 207.65.32.88