64.18.in-addr.arpa.X2.AMAZONAWS.COMPDNS1.ULTRADNS.NETX1.AMAZONAWS.COMX3.AMAZONAWS.ORGX4.AMAZONAWS.ORGhttps://rdap.arin.net/registry/domain/64.18.in-addr.arpa.https://whois.arin.net/rest/rdns/64.18.in-addr.arpa.2021-02-26T15:31:48-05:00