Every IP lookup result gains `geo`. One request to geojs carries all uncached addresses of a lookup, within 1 second. On a timeout, an error or an answer with no location, the lookup reads DB-IP City Lite, downloaded monthly into the state directory. Geojs answers stay in memory, at most 250,000, and in `cache.db` for 7 days. The home page footer credits DB-IP.
Judgement call: a reserved address goes to neither source, and its `geo` is null.
Judgement call: `updated` for a DB-IP answer is when the copy was downloaded.
Deviation: the cache is SQLite, by sneak's words, not the JSON file the standing rule asks for.
Model: opus-5-5
`ptr` keeps its field and shape. It now comes from Google, Cloudflare, AdGuard and Quad9 over RFC 8484, tried in turn within 2 seconds, in place of the host's resolver with no cache. Answers stay in memory and in a new `cache.db` for the record's TTL, at most 250,000 addresses. A reserved address is not sent to any resolver and has an empty `ptr`.
Judgement call: each resolver gets an equal share of the time left, so a hung one does not use up the limit.
Judgement call: the negative TTL is the smaller of the SOA minimum and the SOA's own TTL.
Deviation: the cache is SQLite, by sneak's words, not the JSON file the standing rule asks for.
Model: opus-5-5
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