shell:$ nslookup -timeout=2 -retry=1 'support.environment.data.gov.uk'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
support.environment.data.gov.uk	canonical name = custom.domain.refined.site.
Name:	custom.domain.refined.site
Address: 104.16.106.101
Name:	custom.domain.refined.site
Address: 104.16.109.101
Name:	custom.domain.refined.site
Address: 104.16.110.101
Name:	custom.domain.refined.site
Address: 104.16.108.101
Name:	custom.domain.refined.site
Address: 104.16.107.101
Name:	custom.domain.refined.site
Address: 2606:4700::6810:6a65
Name:	custom.domain.refined.site
Address: 2606:4700::6810:6d65
Name:	custom.domain.refined.site
Address: 2606:4700::6810:6c65
Name:	custom.domain.refined.site
Address: 2606:4700::6810:6e65
Name:	custom.domain.refined.site
Address: 2606:4700::6810:6b65