shell:$ nslookup -timeout=2 -retry=1 'nttdocomo.auth0.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	nttdocomo.auth0.com
Address: 172.64.150.238
Name:	nttdocomo.auth0.com
Address: 104.18.37.18
Name:	nttdocomo.auth0.com
Address: 2a06:98c1:3101::6812:2512
Name:	nttdocomo.auth0.com
Address: 2606:4700:4403::ac40:96ee