Hello, While watching some parked domains, I recently observed one which has a TXT field containing some crypto value, something like a ssh key/RSA 512 or 1024 output (only the crypto part 'cvxvcvcxvcxv=' ). For now, I have referenced the following usage of TXT - DNS Server information/version - SPF (format like "v=spf1 a mx -all") [1] - DKIM (format like "k=rsa\; t=y\; p=MIGfMA0GCSqGSIb3 [...] YA+OwSMWQIDAQAB", but always in _domainkey.<domain>) [2] - not DNSSec as I supposed first (only DNSKEY, RR, RSIG, NSEC, not TXT) Does someone know at what kind of usage this kind of value could correspond ? (even if, nearly everything is possible) Maybe somebody knows of a webpage referencing common usage of DNS fields ? I found http://www.iana.org/assignments/dns-parameters but it points only on RFC not practical usage. Thanks a lot. Best regards, Jul [1] http://en.wikipedia.org/wiki/Sender_Policy_Framework [2] http://www.ietf.org/rfc/rfc4871.txt (7.4) Note: current RFC referencing TXT field is http://www.ietf.org/rfc/rfc1035.txt "TXT RRs are used to hold descriptive text."