shell:$ nslookup -timeout=2 -retry=1 'app.ipay.com.bd'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	app.ipay.com.bd
Address: 172.67.184.195
Name:	app.ipay.com.bd
Address: 104.21.84.17
Name:	app.ipay.com.bd
Address: 2606:4700:3032::ac43:b8c3
Name:	app.ipay.com.bd
Address: 2606:4700:3037::6815:5411