TheDNSMuseum
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Tools and toys

DNS geocaching

A carefully formed DNS query retrieves a geocaching clue in TXT data, turning the resolver into a lightweight interface for a field game.

geocachingTXT recordsgames

Date updated:

Screenshot used in the talk for DNS geocaching
Screenshot used in the original talk.

DNS names provide a compact request syntax and TXT answers carry a textual response. That is enough to hide a playable clue in the normal resolution process.

This is an especially good example of DNS as a public, queryable data layer.

Primary source: https://coord.info/GC615NM