shell:$ nslookup -timeout=2 -retry=1 'my.three.co.uk'
Server:		127.0.0.53
Address:	127.0.0.53#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: 23.47.9.118