Originally Posted by Ruben
IPV6 are not a issue especially abbreviated ones?
"short" IPv6 are still valid IPv6 addresses, and the checks are still done on the Stop Forum Spam side of things. We simply look for a "yes" or "no" from the request.

Example Request to SFS
Example Response from SFS:
Code
<response success="true">
	<type>ip</type>
	<appears>yes</appears>
	<lastseen>2019-12-06 20:16:59</lastseen>
	<frequency>12</frequency>
</response>