1991-07-01T00:00:00-04:00https://rdap.arin.net/registry/ip/21.0.0.0[https://whois.arin.net/rest/net/NET-21-0-0-0-1]21.255.255.255NET-21-0-0-0-1DNIC-SNET-021821.255.255.255Direct AllocationDA21.0.0.0falsehttps://whois.arin.net/rest/org/DNIC21.0.0.02009-06-19T11:44:08-04:004