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A comment on Companies must stop using Google Analytics. Parent comment

Re:Companies must stop using Google Analytics by pixl97 on Tuesday July 04, 2023 @11:23AM (#36587890)
Depends how you define IP in this sense. Each full individual IPv6, unlikely as most consumer devices are getting a somewhat random internal address on their network.

Now, with IPv6 for most consumers the first 64 bits is generally enough to define the edge network device that would be covered by a single IPv4 these days.

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Re:Companies must stop using Google Analytics by marcosdumay on Tuesday July 04, 2023 @01:24PM (#36589777)
> the first 64 bits is generally enough to define the edge network

One complication is that hashing removes this structure. If you use any good algorithm, you will need to test the entire address to recover any part of it.

I am very wary of IPv6 addresses being so heavily biased into 00 or ff segments that the address space doesn't actually add much entropy. So, I'd go with no, it's not safe to hash them. But if you get some random ones, I am really not sure.

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