4.17.72.in-addr.arpa.AUTH4.CHARTER.COMAUTH2.CHARTER.COMAUTH3.CHARTER.COMAUTH1.CHARTER.COMhttps://rdap.arin.net/registry/domain/4.17.72.in-addr.arpa.https://whois.arin.net/rest/rdns/4.17.72.in-addr.arpa.2020-12-01T16:30:12-05:00