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): This list has not complete. Please check this accounts. Even if Seskfabrega & other accounts not dangerous, Seskfabrega has a two warning/block: this and this, in which case Seskfabrega must blocked infinity. --Դեմ խմբակային իշխանությանը (talk) 17:12, 25 April 2015 (UTC)
Reason(s): Same edit patterns, articles edit, interest in the same subject and putting promotional sources to articles. I wonder if they are the same person! Moheen Reeyad (talk) 07:22, 27 April 2015 (UTC)
Note: Pre-check note: Creativesciber101 is Stale. Data has expired for this account. We won't be able to check. -- M\A 08:46, 27 April 2015 (UTC)
Additional information needed @Moheen Reeyad: Can you please explain to us why the edits are problematic? Which policies are they violating with their behaviour? This is for us to assess the need for the CU. Thank you. -- M\A 08:49, 27 April 2015 (UTC)
Few days ago a page named bn:উইকিপিডিয়া:নিবন্ধ অপসারণের প্রস্তাবনা/আহমদ উল্লাহ মাইজভান্ডারীর খলিফা was nominated in Wikipedia:Articles for deletion, as it was an non-encyclopedic article. This article was created by User:Sufidisciple. After that, these users opposing against the deletion, without any explanation. And they are acting similarly, their edit pattern is same also. In before, four users (User:Creativesciber101, User:Diplomatic123, User:Iamtushar107, User:Sufifollower) among them have no edit in bn.wikipedia without this page. It seems like there accounts are created for this purpose of objecting the deletion. Thank you. --Moheen Reeyad (talk) 11:01, 27 April 2015 (UTC)
Reason(s): User with a "good" account ru:Участник:Trance Light was found to be vandalising ukwiki from some 20 sockpuppets over the last few months. Allegedly Special:CentralAuth/Viva_heroas and Special:CentralAuth/Потужний_львівський_танчик are also his account for vandalism in srwiki and shwiki, but the user actively denies is. I think that a cross-wiki check is needed to confirm whether this user is involved in vandalism in any other wikis, and if this is confirmed, he may deserve a global lock for Special:CentralAuth/Trance Light. Account #1 on the list is his main account, accounts #2 and #3 are those to be checked, accounts #4-7 are his confirmed sockpuppets to compare with. Thanks — NickK (talk) 13:59, 1 May 2015 (UTC)
Confirmed and locked almost 40 accounts and several ranges on sr, sh, tr and kk wiki. --Vituzzu (talk) 14:17, 1 May 2015 (UTC)