Preventing IP blocking
When you use Clonable, much of the web traffic will pass through our servers. This traffic unfortunately includes malicious traffic. While we try to filter out most malicious traffic before it reaches your server, we cannot stop everything without also blocking legitimate users.
If you yourself are using a firewall or fail2ban system, that firewall may see Clonable as a malicious user and add us to a block list. When this happens, your clones are no longer reachable. It is therefore important that you add our outgoing IP addresses to a whitelist.
| Server | IPv4 Address | IPv6 Address |
|---|---|---|
| clonable-ams-1 | 80.69.93.77 | 2a01:7c8:bb06:71::/64 |
| clonable-rtm-1 | 87.253.157.237 | 2a01:7c8:bb07:b4::/64 |
Blocking individual malicious requests is fine (and encouraged), as long as our servers are not (permanently) blocked.
If you are not sure whether such a system exists for your site, ask your IT department or web host for more information. They can also help you whitelist our servers.
We include the visitor's IP address in the X-Real-IP and X-Forwarded-For headers, so you can also configure your firewall to use those values as the recipient's IP address. This is the best solution in most cases, but unfortunately not always possible. For more information, see Real IP address visitor
Finding a site's IP address
There are several ways to find a site's IP address. This page provides clear instructions for both Windows and Mac users. You can also use an online tool such as NSlookup.io
504 error
If a 504 error occurs when visiting a clone, it is always due to one of the two problems below
The IP address of the original site has changed
If the IP address of the original site has changed, the old IP address will no longer work. You can change this IP address under origin server in the site settings under advanced.

Clonable is blocked
Is the origin server set up correctly? If so, Clonable is probably blocked. To resolve this, the Clonable servers must be unblocked and added to a whitelist. How to do this depends on the hosting provider. The most up-to-date server information can be found here: https://kb.clonable.net/misc/technical-information/server-network#ip-adressen.
502, bad gateway
If a 502 Bad gateway error appears when visiting a clone, this means that the IP address of the original server is set incorrectly. To resolve this, first find the correct IP address and then set it as the origin server in the site settings under advanced:
