shell:$ nslookup -timeout=2 -retry=1 'app.51pay.monster'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	app.51pay.monster
Address: 172.67.142.219
Name:	app.51pay.monster
Address: 104.21.54.219
Name:	app.51pay.monster
Address: 2606:4700:3036::ac43:8edb
Name:	app.51pay.monster
Address: 2606:4700:3035::6815:36db