Thanks for these checks - really appreciate you looking into this more. It’s still a little mysterious, as while sites will definitely blocklist *.netlify.app (as there are indeed many spam/malware sites using Netlify’s free domains), it looks like specifically n8n-docs.netlify.app is ok:
I’ve just checked our setup, and confirmed we’re following Netlify’s recommendations: How to Set Up Netlify DNS - Custom Domains, CNAME, & Records Basically, Netlify recommend routing things through the n8n-docs.netlify.app domain, to get the maximum benefits (speed) from their hosting. So we have a CNAME record for docs.n8n.io, pointing to n8n-docs.netlify.app. Within Netlify, docs.n8n.io is set as our primary domain.