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by majewsky 2991 days ago
They may be using Cloudflare in some regions only, or as a standby to take over in case of a DDoS on the original host.
1 comments

Another post in this thread answered it: HN uses Cloudflare's DNS, and they create a cert even if you just use the DNS.
HN doesn't use Cloudflare DNS for news.ycombinator.com, but is actually served by Cloudflare.