229.18.in-addr.arpa.NS4-16-SA-EAST-1.EC2-RDNS.AMAZONAWS.COMNS2-16-SA-EAST-1.EC2-RDNS.AMAZONAWS.COMNS1-16-SA-EAST-1.EC2-RDNS.AMAZONAWS.COMNS3-16-SA-EAST-1.EC2-RDNS.AMAZONAWS.COMhttps://rdap.arin.net/registry/domain/229.18.in-addr.arpa.https://whois.arin.net/rest/rdns/229.18.in-addr.arpa.2021-08-04T14:03:54-04:00