In early 00s my university in Poland had all computers at the campus connected to the internet with public IPs :) Thousands of computers - every lab, every room at dormitories and some for public use standing at the corridors at campus, all with unique public IPs cause they had so many :)

I think they had 19 bits of IP addresses available or sth crazy like that :) They were one of the institutions introducing internet in Poland back in 90s, so they had a huge portion of the addresses assigned and kept them.