shell:$ nslookup -timeout=2 -retry=1 'dev-www.ref.o2.co.uk.cdn.cloudflare.net'
Server: 1.1.1.1
Address: 1.1.1.1#53
Non-authoritative answer:
Name: dev-www.ref.o2.co.uk.cdn.cloudflare.net
Address: 104.18.26.20
Name: dev-www.ref.o2.co.uk.cdn.cloudflare.net
Address: 104.18.27.20
Name: dev-www.ref.o2.co.uk.cdn.cloudflare.net
Address: 2606:4700::6812:1a14
Name: dev-www.ref.o2.co.uk.cdn.cloudflare.net
Address: 2606:4700::6812:1b14
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