I'm seeing Cloudflare issues on my $dayjob sites. node.js.org seems to be using CF, so likely related.
site is down for me as well, but it's not reflected on https://status.nodejs.org/ ... (is that page automatic or manually controlled?)
Several sites using cloudflare are partially down since just after 18:00Z.
AO3_Status reports it's Cloudflare routing issues for IPv4 traffic. (but the Cloudflare status page reports nothing useful)
The opposite is true for me now. Now that status.nodejs.org does report the issue, nodejs.org and downloads are working correctly.