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I keep seeing My Site is Offline
If CloudFlare can not connect to your server, a "Website Currently Unavailable" message will appear. This error message occurs in two circumstances:
Your server or hosting provider is having issues
Your server or hosting provider is not having issues, but either your hosting provider or server is limiting or blocking connections from CloudFlare IPs
Tips to diagnose if your origin server is offline
When you see the "Website Currently Unavailable" message, the first step is to check to see if your origin server is having issues. To do so, there are two tests that you can run.
Test 1) Try accessing the following subdomain for your website (i.e yourdomain.com): direct.yourdomain.com
If you can't get to the site going direct, then the issue is likely with your server or hosting provider. In this case, contact your hosting provider to find out why your origin server is offline.
Note: CloudFlare adds the 'direct' subdomain when you sign up for the service. It bypasses CloudFlare's network. Some users choose to edit the name of the subdomain, so if you've changed the name, then you should replace 'direct' with the revised subdomain name.
Test 2) Run the following curl command in Terminal or Putty:
curl -v -H 'Host: yourdomain.com' server IP address So, as an example: curl -v -H 'Host: yourdomain.com' 220.127.116.11
Tip: You can get your server IP address from your CloudFlare DNS Settings page.
If the curl returns an error message like "can't connect to host" or "500 internal server error", then the issue is with your server or hosting provider. Please contact your hosting provider for assistance.
If the curl returns HTML in the response, then the issue is that your server or hosting provider has rules in place limiting connections from CloudFlare IPs. Proceed to the next section for Troubleshooting Help.
Tips to ensure CloudFlare's IPs are accepted by your server If your server origin is online, then: 1) Make sure that you're not blocking CloudFlare IPs in .htaccess, iptables , or your firewall. 2) Make sure your hosting provider isn't rate limiting or blocking IP requests from the CloudFlare IPs and ask them to whitelist the IP addresses below:
18.104.22.168/24 (22.214.171.124 - 126.96.36.199)
188.8.131.52/24 (184.108.40.206 - 220.127.116.11)
18.104.22.168/21 (22.214.171.124 - 126.96.36.199)
188.8.131.52/20 (184.108.40.206 - 220.127.116.11)
18.104.22.168/22 (22.214.171.124 - 126.96.36.199)
188.8.131.52/18 (184.108.40.206 - 220.127.116.11)
18.104.22.168/18 (22.214.171.124 - 126.96.36.199)
2400:CB00:/32 (2400:CB00:0000:0000 - 2400:CB00:FFFF:FFFF)
2606:4700:/32 (2606:4700:0000:0000 - 2606::4700:FFFF:FFFF)
2803:f800:/32 (2803:f800:0:0:0:0:0:0 - 2803:f800:FFFF:FFFF)
3) Make sure that you're operating off of the most recent versions of Bad Behavior or mod_security. mod_security's core rules aren't blocking CloudFlare requests.