Show HN: Nihonpost – I parsed Japan Post's KEN_ALL.CSV so you don't have to

> Postal codes resolve to town (町域) level — that's how Japan's postal system works. Users still type the block/building portion themselves.

'town' might be misunderstood. The postal code resolve to area probably less than 1km^2. Not specific enough to be a block, but I wouldn't call that a town either