shell:$ nslookup -timeout=2 -retry=1 'accounts.o2.co.uk'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
accounts.o2.co.uk	canonical name = lbprdcachetieraccountsproxy.o2r53ctp.co.uk.
lbprdcachetieraccountsproxy.o2r53ctp.co.uk	canonical name = lbprd0cachetieraccountsproxy.o2r53ctp.co.uk.
lbprd0cachetieraccountsproxy.o2r53ctp.co.uk	canonical name = d3c17wgn4zp1k7.cloudfront.net.
Name:	d3c17wgn4zp1k7.cloudfront.net
Address: 3.170.51.75
Name:	d3c17wgn4zp1k7.cloudfront.net
Address: 3.170.51.44
Name:	d3c17wgn4zp1k7.cloudfront.net
Address: 3.170.51.126
Name:	d3c17wgn4zp1k7.cloudfront.net
Address: 3.170.51.34