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Username, IP address, or CIDR range to check.

Checked user, IP address, or CIDR range.

IP address or username:

User to block.

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.

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

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

Block selected users

Block selected users

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.

check user IP addresses

<strong>Your username or IP address has been blocked.</strong>

The block was made by $1.
The reason given is <em>$2</em>.

* Start of block: $8
* Expiration of block: $6
* Intended blockee: $7

You can contact $1 or another [[{{MediaWiki:Grouppage-sysop}}|administrator]] to discuss the block.
You can use the "{{int:emailuser}}" feature if a valid e-mail address is specified in your [[Special:Preferences|preferences]] and you have not been blocked from using it.
Your current IP address is $3, and the block ID is #$5.
Please include all above details in any queries you make.

<strong>Your username or IP address has been blocked.</strong>

The block was made by $1.
The reason given is <em>$2</em>.

* Start of block: $8
* Expiration of block: $6
* Intended blockee: $7

You can contact $1 or another [[{{MediaWiki:Grouppage-sysop}}|administrator]] to discuss the block.

You can use the "{{int:emailuser}}" feature if a valid e-mail address is specified in your [[Special:Preferences|preferences]] and you have not been blocked from using it.

Your current IP address is $3, and the block ID is #$5.
Please include all above details in any queries you make.

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

Use XFF data instead of IP address.

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

Paginates a long block of text

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.

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.

Get IP addresses

Contact username for access problems or queries:

The username to check against AntiSpoof.

Check IP addresses for [[User:Example]]

*Common block reasons
** Inserting false information
** Removing content from pages
** Spamming links to external sites
** Inserting nonsense/gibberish into pages
** Intimidating behaviour/harassment
** Abusing multiple accounts
** Unacceptable username

changed block settings for [[$1]] with an expiry time of $2 $3