Apparently as late as the 80s, Japanese corporations were passing lists to each other containing family names from "burakku" villages (I think they were villages that would practise stuff that was taboo to the rest of Japan like eating pork) presumably to blacklist them, do those lists still go around and are those villages still a thing?
i wrote a long in depth reply to this but it got deleted when i refreshed.
here's the short version
* burakumin is 99% a solved problem. very few young people are even aware of the edo caste system. most people with burakumin ancestry are not aware of it.
* discrimination based on surname + family address was more reliable in the past, before the massive pre-war urban migration blurred the geographical boundaries between former afflicted territory and economic development. you would have to go back 80 years into someone's family register before you'd find any clues what caste they might have originated from.
* even in the 80s, discriminatory lists against burakumin was not common in tokyo. Most people in tokyo are from somewhere else.
* ancestry was a bigger deal in the past, when arranged marriages were the norm.
the lists you're talking about is 特殊部落地名総鑑 (buraku chimei soukan - compilation of village locations). it originated in the pre-war era as a record for afflicted villages that needed government focus. Even though it's censored information, anyone can just look it up, but in the end, it's just a non exhaustive list of addresses. Later on, books with more information were sold, but they have dubious accuracy.
As for the actual villages themselves, it would be almost impossible to know you were in one. Some former buraku are still economically depressed, such as san'ya in Tokyo (former execution ground), or along the river in Kawasaki (heavy industrial area), while others are completely redeveloped.
edit:
address discrimination still happens in some regions, like Kyoto, or so I'm told.
x 9 
