shell:$ nslookup -timeout=2 -retry=1 'perfops.swiftycdn.net'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
perfops.swiftycdn.net	canonical name = 9429cd6ci418217.g.swiftycdn.net.
Name:	9429cd6ci418217.g.swiftycdn.net
Address: 91.193.6.86