Paul Vixie writes:
anonymizing at /48 for v6 and /24 for v4 isn't enough. even the least capable data scientist, using data that's less than a millionth of the other data in google's or facebook's or cambridge analytica's possession, can _trivially_ deanonymize that.
My ISP gives me a /48 for home use. I do think the advisce nowadays is to issue a /56 or /52 or so for home use. Just by accident I learned today that the Matomo/piwik anonymyzer plug in has three settings, for 4 /8, /16, /24 which goves for for v6 to /64, /80, /104. (See https://github.com/matomo-org/matomo/issues/3710 for discussion and https://github.com/matomo-org/matomo/commit/c072a0e5911b544890a39e86c9efe024... for the implementation).
this is also why ECS is bad for the end-user population.
yeah, that is the opionion of quite some people. jaap