1. whois
2. history
#NS 6 pingidentity.jp {'ns-671.awsdns-19.net.', 'ns-1089.awsdns-08.org.', 'ns-12 0.awsdns-15.com.', 'ns0.dnsmadeeasy.com.', 'ns2.dnsmadeeasy.com.', 'ns1.dnsmadee asy.com.'} match pingidentity.jp ns-671.awsdns-19.net. == match pingidentity.jp ns-1089.awsdns-08.org. == match pingidentity.jp ns-120.awsdns-15.com. == match pingidentity.jp ns0.dnsmadeeasy.com. == match pingidentity.jp ns2.dnsmadeeasy.com. == match pingidentity.jp ns1.dnsmadeeasy.com. ==