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Checked user, IP address, or CIDR range.

Username, IP address, or CIDR range to check.

Type of CheckUser request:
;userips:Get IP address of target user.
;edits:Get changes from target IP address or range.
;ipusers:Get users from target IP address or range.

IP address or username:

Watch the user and talk pages of the user or IP address.

Get all blocks applying to this IP or CIDR range, including range blocks.
This cannot be used together with <var>$3users</var>. CIDR ranges broader than IPv4/$1 or IPv6/$2 will not be not accepted.

Too many results (according to query estimate), please narrow down the CIDR.
Here are the IP addresses used ($1 max, sorted by address):

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.
Use this in accordance with policy.

Use XFF data instead of IP address.

check user IP addresses

Find common range and affected IP addresses for a list of IP addresses

Common CIDR:

Target:

Coordinate out of range

Use the form below to block write access from a specific IP address or username.
This should be done only to prevent vandalism, and in accordance with [[{{MediaWiki:Policy-url}}|policy]].
Fill in a specific reason below (for example, citing particular pages that were vandalised).
You can block IP address ranges using the [https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing CIDR] syntax; the largest allowed range is /$1 for IPv4 and /$2 for IPv6.

Block IP address <kbd>192.0.2.5</kbd> for three days with a reason.

Wikimedia chapter, thematic organisation, or user group & title (if any)

Email address confirmation cancelled

Time limit of user data (like "-2 weeks" or "2 weeks ago").

Query recent changes

Check which IP addresses are used by a given username, or which usernames are used by a given IP.

User: