shell:$ nslookup -timeout=2 -retry=1 'filter.ncnd.robi.com.bd'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
filter.ncnd.robi.com.bd	canonical name = robi.filter.ncnd.mobi.
robi.filter.ncnd.mobi	canonical name = robi.ncnd.mobi.
Name:	robi.ncnd.mobi
Address: 18.203.181.3
Name:	robi.ncnd.mobi
Address: 63.32.11.13
Name:	robi.ncnd.mobi
Address: 54.171.103.231
Name:	robi.ncnd.mobi
Address: 18.203.3.79