Updates on this have been sparse in the past years, but I'm getting back on track. Having finished range A (1-9999) in 2021 and half of range B (10000-20000) earlier this year, I am now focusing on backing up the uploads made after 2020. This means that the oldest/historical uploads are covered and everything that was available when I crawled the site has been backed up. The uploads made in the past 2 years are almost only hosted on Mega.nz and are generally less prone to be offline. Still, there are a few hundreds of broken links for Mega uploads to take into account.
Because NZBKing was offline for a while, I wondered about the availability of the NZB files for this project. The other indexers don't have that much retention and the earliest backups from 2017-2018 can only be found on NZBKing. I cannot host the files on my server anymore so I figured I'd rather upload them in two packs, which are now available in the
second post. This way, anyone who wants to download the backups doesn't have to rely on an indexer anymore.