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

Non-authoritative answer:
mobile.o2.co.uk	canonical name = wap.o2.co.uk.
wap.o2.co.uk	canonical name = d1evsoacg6eeum.cloudfront.net.
Name:	d1evsoacg6eeum.cloudfront.net
Address: 3.170.51.84
Name:	d1evsoacg6eeum.cloudfront.net
Address: 3.170.51.109
Name:	d1evsoacg6eeum.cloudfront.net
Address: 3.170.51.40
Name:	d1evsoacg6eeum.cloudfront.net
Address: 3.170.51.19
Name:	d1evsoacg6eeum.cloudfront.net
Address: 2600:9000:24bf:8800:8:da62:2b80:93a1
Name:	d1evsoacg6eeum.cloudfront.net
Address: 2600:9000:24bf:dc00:8:da62:2b80:93a1
Name:	d1evsoacg6eeum.cloudfront.net
Address: 2600:9000:24bf:6a00:8:da62:2b80:93a1
Name:	d1evsoacg6eeum.cloudfront.net
Address: 2600:9000:24bf:f200:8:da62:2b80:93a1
Name:	d1evsoacg6eeum.cloudfront.net
Address: 2600:9000:24bf:6400:8:da62:2b80:93a1
Name:	d1evsoacg6eeum.cloudfront.net
Address: 2600:9000:24bf:7000:8:da62:2b80:93a1
Name:	d1evsoacg6eeum.cloudfront.net
Address: 2600:9000:24bf:c600:8:da62:2b80:93a1
Name:	d1evsoacg6eeum.cloudfront.net
Address: 2600:9000:24bf:cc00:8:da62:2b80:93a1