[varenc]

MIT used to have all of 18.0.0.0/8 but they sold half of it to AWS a few years ago. Because MIT had so many IP addresses they didn't need to use a NAT. Everyone connecting over wifi got a real world 18.* IP address.

It also made network architecture easy. Every MIT building got its own B class subnet. Hilariously, even the MIT boat house which couldn't have had more than a dozen computers online at once had 65,534 addresses. It made it very easy to find out which building someone was in based on their IP.

[icedchai]

IP blocks were handed out like candy in the mid-90's and earlier. I have a /24 ("class C") personally, and know of several others who do also.

[stordoff]

My old university has three /16s, and a bunch of other IP blocks, so gave public IPs to everyone (though they now seem to be using private IPs for some purposes). I never looked at how the public machines were allocated, but it did make picking out traffic from the residences trivial - they reverse DNS resolved to <userid>.<college.>cam.ac.uk

[angulardragon03]

My old uni still has two /16s. Everyone on campus gets their own “public” IP (behind the firewall, of course).