Shortcuts: COM:CHECK • COM:RFCU • COM:SOCK

This is the place to request investigations of abuse of multiple accounts or of other circumstances that require use of checkuser privileges.

Requesting a check

These indicators are used by CheckUsers to allow easier at-a-glance reading of their notes, actions and comments.
Request completed
Confirmed	Technically indistinguishable
Likely	Possilikely
Possible	Unlikely
Inconclusive	Unrelated
No action	Stale
Request declined
Declined	Checkuser is not for fishing
Checkuser is not magic pixie dust.	The CheckUser Magic 8-Ball says
It looks like a duck to me	Checkuser is not a crystal ball.
Information
Additional information needed	Deferred to
Doing…	Info

Please do not ask us to run checks without good reason; be aware of the following before requesting a check:

1. Checkuser is a last resort for difficult cases; pursue other options first, such as posting on the administrator's noticeboard. (This is not a venue for requesting administrative action such as blocks or file clean-up.)
2. Running a check will only be done to combat disruption on Commons, or as required to assist checkuser investigations on other Wikimedia wikis.
   • Valid reasons for running a check include, for example: vandalism where a block of the underlying IP or IP range is needed and suspected block evasion, vote-stacking, or other disruption where technical evidence would prevent or reduce further disruption.
   • Requests to check accounts already confirmed on other projects may be declined as redundant.
   • Requests to run a check on yourself will be declined.
3. Evidence is required. When you request a check, you must include a rationale that demonstrates (e.g., by including diffs) what the disruption to the project is, and why you believe the accounts are related.
   • Requests to run a check without evidence or with ambiguous reasoning will result in delays or the request not being investigated.
4. The privacy policy does not allow us to make a check that has the effect of revealing IP addresses.

Outcome

Responses will be brief in order to comply with Wikimedia privacy policy. Due to technical limitations, results are not always clear. Closed requests are archived after seven days.

Privacy concerns

If you feel that a checkuser request has led to a violation of the Wikimedia Foundation privacy policy regarding yourself, please refer the case to the Ombuds commission.