shell:$ nslookup -timeout=2 -retry=1 'my.three.co.uk'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
my.three.co.uk	canonical name = www.three.co.uk.edgekey.net.
www.three.co.uk.edgekey.net	canonical name = e1174.ksd.akamaiedge.net.
Name:	e1174.ksd.akamaiedge.net
Address: 184.29.113.128