This is the kind of weird, niche quasi-silliness that I love finding on the internet.
Chanced upon the following, tonight, and suspect burrowing therein just might unearth a bit of such silliness:
https://emreed.net/LowTech_Directory.html
Me too! It's practical too -- I found one serious project that was actually using it to label their entities, which is how I found out about these integer servers in the first place