would anyone have the bandwidth to make a copy of the wiki available on /r/usenet?
There are troves of interesting information on that wiki, including the maps. I'd think that would be amazing to keep alive.
Does anyone even know how (and from where) they scrape data to keep it up to date?
Original mod of r/usenet. Here is a backup of the wiki.
https://github.com/openlemmy/reddit-backups/wiki/
Thankfully archive.org has recent snapshots of most of the wiki.
Indexers
Provider deals
Software