shell:$ nslookup -timeout=2 -retry=1 'www.certifigroup.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
www.certifigroup.com	canonical name = cdn.perf1.com.
Name:	cdn.perf1.com
Address: 152.89.172.56
Name:	cdn.perf1.com
Address: 81.92.94.54
Name:	cdn.perf1.com
Address: 81.92.95.55
Name:	cdn.perf1.com
Address: 2a01:c8:100::54
Name:	cdn.perf1.com
Address: 2a01:c8:101::55
Name:	cdn.perf1.com
Address: 2a09:35c0:102::56