shell:$ nslookup -timeout=2 -retry=1 'www.thesilverline.org.uk'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
www.thesilverline.org.uk	canonical name = www.thesilverline.org.uk.dxcloud.episerver.net.
www.thesilverline.org.uk.dxcloud.episerver.net	canonical name = aguk01mstr5mr18.dxp.optimizely.com.
Name:	aguk01mstr5mr18.dxp.optimizely.com
Address: 104.18.38.60
Name:	aguk01mstr5mr18.dxp.optimizely.com
Address: 172.64.149.196
Name:	aguk01mstr5mr18.dxp.optimizely.com
Address: 2606:4700:4405::6812:263c
Name:	aguk01mstr5mr18.dxp.optimizely.com
Address: 2606:4700:4406::ac40:95c4