shell:$ nslookup -timeout=2 -retry=1 'mytelkomsel.finnet-indonesia.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
mytelkomsel.finnet-indonesia.com	canonical name = belitung.finnet-indonesia.com.
Name:	belitung.finnet-indonesia.com
Address: 203.130.249.104