Seems like a reasonable way to track the locations of named items; especially if the location of the items is public and amenable to caching. Especially if you

Seems like a reasonable way to track the locations of named items; especially if the location of the items is public and amenable to caching. Especially if you assume network clients are capable of general networking, and not limited to typical browser stuff. May also need to assume typical recursive DNS servers won't mess up your lookups, because that's not always a reasonable assumption anymore. For something modern like tracking a private fleet or your friends, you'd need to overlay access control or something. Something like how e164.arpa was conceptually going to be public, but ended up behind private networks so access control and cost accounting could be added.