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

Non-authoritative answer:
auth.tigo.com	canonical name = auth-tigo-com.tigocloud.net.
Name:	auth-tigo-com.tigocloud.net
Address: 34.236.70.155
Name:	auth-tigo-com.tigocloud.net
Address: 52.86.60.248