Make sure you have a good reason for the check. It will only be accepted to counter vandalism or disruption to Wikimedia wikis. Valid reasons include needing a block of the underlying IP or IP range, disruptive sockpuppetry, vote-stacking, and similar disruption where the technical evidence from running a check would prevent or reduce further disruption.
Be specific in your reasons. Ambiguous or insufficient reasons will cause delays. Explain the disruption and why you believe the accounts are related, ideally using diff links or other evidence.
Make sure there are no local checkusers or policies.
Reason(s): User:مصطفی ستاری, user:جواد ماگمادوف, user:فرنام کشاورزی, and user:هوسئین have been involved in similar edit wars in articles related to Lur tribe. They have added huge unverified content to the articles and have used unreliable sources. Please compare these very similar edits, done by user:مصطفی ستاری and user:جواد ماگمادوف: 1 & 2.
A similar edit by user:هوسئین: 1
Please compare these very similar edits, done by user:فرنام کشاورزی and user:جواد ماگمادوف: 1 & 2 (here, user:فرنام کشاورزی has also tried to defend user:مصطفی ستاری).
I suspect that these are the new sock puppets of user:مریم ایلامی. Based on their edit patterns. For example campare these two edits done by user:فرنام کشاورزی and user:مریم ایلامی:
1 & 2 (in these edits both of them are trying to show that Lak people are Lor, not Kurd). MRG90 (talk) 13:08, 6 February 2016 (UTC)
Reason(s): All those users seem to be interested in the Romanian translations of Disney Cartoons. Their edits are often subtly distructive (links to the wrong article, promotion of non-notable organisations, copyvio etc.). They are also suspected to be clones of Beleiutz, a famous cross-wiki vandal. Strainu (talk) 23:05, 8 February 2016 (UTC)
I strongly support this query. If a very precise reason is needed, it's edit warring here. Abusing alternate accounts in an edit war is grounds for a block on ro.wiki. We also need to know if CuldeSac12 abused multiple accounts, because he's an autopatrolled user, so administrative action against a trusted user is more sensible than in the case on single purpose accounts.
Please also check user Adelin12, who in 2 days will be auto-confirmed and thus able to circumvent the semi-protection of articles which is meant to stop this sockpuppet farm. --Mihai P. (talk) 12:46, 10 February 2016 (UTC)
Reason(s): User (அரிஅரவேலன்) has express his objection towards usage of unreference template at ta:விக்கிப்பீடியா:ஒத்தாசைப் பக்கம் that resulted to come back of user பொன்னிலவன் after long time just to place unreference templates. Longtime ago, both user express similar interest and edit same topics and edit others usage pages and stated they are friends. I would like to request more cross check regarding to other socks. AntanO 19:07, 10 February 2016 (UTC)