shell:$ nslookup -timeout=2 -retry=1 'www.uat-subreg-portal.safaricom.co.ke'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
www.uat-subreg-portal.safaricom.co.ke	canonical name = 7fn64sm.impervadns.net.
Name:	7fn64sm.impervadns.net
Address: 45.223.17.7