Thanks for posting the article link. Archive.md, which is a fantastic service, started throwing a 403 Forbidden error and 1001 error from Cloudflare a few days ago. Any idea what’s causing it? Cleared cookies and cache for it already. However I’m able to get to your archived article.
Cloudflare dns doesn’t support it, if they’re your dns provider. Some browsers are using them for dns over https which may be the culprit.
More specifically they don't support CloudFlare's DNS. The operator of Archive.(today/is/md) has decided to specifically provide bad IPs when the EDNS client subnet extension isn't provided, which CloudFlare's DNS doesn't provide due to privacy concerns.