Users that have the CheckUser privilege are able to inspect certain IP information pertaining to accused sock puppets and other disruptive use. WMF has strict guidelines on how and when this information can be accessed, and all nominees must read the entire guide before accepting a nomination.
In addition, all CheckUsers must identify themselves to the Wikimedia Foundation (e.g. email a scan of their passport) as per the 15 November 2018 resolution.
To request a CheckUser, see Wiktionary:Requests for checkuser.
List of checkusers
|User||Appointed||Time Zone||Babel/Other notes|
|TheDaveRoss||November 16, 2006 (confirmation vote)||UTC-5||en, es-3, la-1|
|Chuck Entz||November 2, 2017||UTC-5||en, de-1, es-1, fr-1, la-1, grc-1|
|Versageek||September 16, 2008|
|Rodasmith||October 11, 2008|