Your ISP is filtering DNS records. Easily fixed by changing DNS. It may even speed up your lookups, as most ISP DNS are slower than the large ones like quad1/8/9.

> They are based in russia.

“Russian authorities have without any notice suspended Russia's most popular file-sharing website torrents.ru for the alleged violation of copyright laws.” (2010) https://www.petosevic.com/resources/news/2010/03/000350

“In 2016, for example, the Moscow City Court (Mosgorsud) granted more than 700 requests to protect intellectual property.” https://www.group-ib.com/blog/torrents/

“The ISPs in Russia are required to block subscriber access to thepiratebay.se and thepiratebay.mn following the complaint of […]” (2015) https://www.maverickeye.de/russia-has-ordered-local-isps-to-...

“Roskomnadzor, the country’s telecom and media industries regulating body wants people to pay, so in 2016 it’s going to block Russia’s 15 most popular torrent websites” https://www.inverse.com/article/9619-russia-will-crack-down-...

etc

There are plenty of Russian music labels. Big book publishers? Not so much. Some sites explicitly ban content from the hosting country to try and avoid that. Not the case here.