MediaWiki:Checkuser-summary

This tool scans recent changes to retrieve the IP addresses used by a user or show the edit/user data for an IP address. Users and edits by a client IP address can be retrieved via XFF headers by appending the IP address with "/xff". IPv4 (CIDR $1-32) and IPv6 (CIDR $2-128) are supported. No more than 5,000 edits will be returned for performance reasons.

Abuse of this tool could constitute a Template:Thissite violation, which stipulates that checkusers must not use this tool to violate the privacy of a user frivolously by querying their privacy-revealing IP address. Be prepared with a reason for running this tool, and note that the CheckUser logs are regularly monitored. Improper use will not be tolerated and may be punished with removal of checkuser rights or blocking.