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

Non-authoritative answer:
tst.btupartnerport.com	canonical name = tst.btupartnerport.com.cdn.cloudflare.net.
Name:	tst.btupartnerport.com.cdn.cloudflare.net
Address: 104.18.34.178
Name:	tst.btupartnerport.com.cdn.cloudflare.net
Address: 172.64.153.78
Name:	tst.btupartnerport.com.cdn.cloudflare.net
Address: 2606:4700:4407::ac40:994e
Name:	tst.btupartnerport.com.cdn.cloudflare.net
Address: 2a06:98c1:3101::6812:22b2