shell:$ nslookup -timeout=2 -retry=1 'ookla.mobitel.lk.prod.hosts.ooklaserver.net'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
ookla.mobitel.lk.prod.hosts.ooklaserver.net	canonical name = ookla.mobitel.lk.
Name:	ookla.mobitel.lk
Address: 202.129.235.210
;; communications error to 1.1.1.1#53: timed out