How to tell if your site is served via CloudFlare | Igor’s Blog
Posted by jpluimers on 2018/08/10
Based on [Wayback/Archive.is] How to tell if your site is served via CloudFlare | Igor’s Blog, I’ve changed the script a little bit.
I’ve tested it with one of the domains from the Cloudbleed list (a pretty OK indication the site is using cloudflare) and a the example.org site that does not:
# curl -sI https://feedly.com | grep "Server\|__cfduid\|CF-RAY"
Set-Cookie: __cfduid=d779ee6e244349cf06e2707771a9185e21492589239; expires=Thu, 19-Apr-18 08:07:19 GMT; path=/; domain=.feedly.com; HttpOnly
Server: cloudflare-nginx
CF-RAY: 351e5e9af8971497-AMS
# curl -sI https://example.org | grep "Server\|__cfduid\|CF-RAY"
Server: ECS (ewr/15BD)
Domain Source: [Wayback/Archive] pirate/sites-using-cloudflare: Archived list of domains using Cloudflare DNS at the time of the CloudBleed announcement
–jeroen
via: [WayBack] https://www.igorkromin.net/index.php/2017/04/18/how-to-tell-if-your-site-is-served-via-cloudflare/ – Joe C. Hecht – Google+
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