shell:$ nslookup -timeout=2 -retry=1 'app.alacaza.fr'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	app.alacaza.fr
Address: 18.154.185.55
Name:	app.alacaza.fr
Address: 18.154.185.87
Name:	app.alacaza.fr
Address: 18.154.185.122
Name:	app.alacaza.fr
Address: 18.154.185.47