[dns-operations] Storing Dates in DNS

Mike Ryan mikeryan at ISI.EDU
Fri Jan 22 02:33:35 UTC 2010

On Thu, Jan 21, 2010 at 06:07:31PM -0800, Crist Clark wrote:
> If there is none, any suggestions smarter than an associated
> TXT record with the Unix Epoch time would be appreciated.

As far as current practices go, a few DNSSEC records (e.g., RRSIG)
contain unsigned 32 bit timestamps. As Matthew Dempsky suggests, you can
put this in the RDATA of an RR in the private space.

TSIG records include an unsigned 48 bit timestamp. Postpones the 2038
bug by about 9 million years.

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