Hiya @yollyflopp and thanks for your patience while we researched. As Luke thought, this is not possible today - we have Russian CDN nodes to make our CDN available in Russia (cf Access to Netlify sites from Russia and Ukraine), which it otherwise wouldn’t be due to shall we say political reasons (in Russia).
We do have a feature request open to change this behavior - in essence, make a switch you could flip to choose availability in Russia or never using Russia - but the team hasn’t started work on it yet and may never depending on a variety of factors. However, if we do, I promise that we will definitely report back in this thread!