I think .zip top level domain would be ideal to host DNS zones based on their zip/postal codes, much like .tel was meant to be a phonebook TLD.
That would have allowed people to register domains with more-or-less precise locality in mind, like
<my_project>.<zip_code>.zip
For example,
straight_outta.90220.zip for your local gang's rap album, or viva.89107.zip for your hotel, you get the idea.
By the way, @aral this would have dovetailed nicely into your idea of personal domain names.
@drq@mastodon.ml the idea is interesting but people generally only remember their zip code. I only remember my own and the one of the main postal office in Ufa because it consists of almost all zeros. so it'll be quite hard to tell what area the zip code and the domain belong to unless you live in this very area