www.istud.it. 30 IN A 104.21.8.119 www.istud.it. 30 IN A 172.67.139.109 www.istud.it. 30 IN AAAA 2606:4700:3034::ac43:8b6d www.istud.it. 30 IN AAAA 2606:4700:3030::6815:877