Those domains are up, but downloading doesn't work right now, possibly because their CDN uses non-onion domain names. They're timing out.

You can use z-lib for the index and download the files on libgen

If you use Telegram, you can use the Zlib bot to search for and get books sent to you over Telegram:

https://t.me/firstlibrarybot

[Max size <50MB]

Z-lib has much more books than libgen, sadly

A work around for PDFs it to select "Open in Browser" from the download popup menu.

Download is working for me

yes, and you can try to send the link to the email first and then download it in the email. It works.

Sorry can you direct the how to method to us?

Can confirm, but has a 20MB (per book) limit.

They stopped being active.

Still working for me.