shell:$ nslookup -timeout=2 -retry=1 'knowledge.tigo.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
knowledge.tigo.com	canonical name = tigoaw.zendesk.com.
Name:	tigoaw.zendesk.com
Address: 216.198.54.2
Name:	tigoaw.zendesk.com
Address: 216.198.53.2