[tsg]

Good idea. Here are some URLs that have failed to archive for me in the last few months (I suspect none are close to being that large):

https://news.ycombinator.com/item?id=30467597

http://occamstypewriter.org/athenedonald/2022/02/27/a-univer...

https://news.ycombinator.com/item?id=28232660

https://en.wikipedia.org/wiki/Mason_%26_Dixon