Miraheze system administrators

System Administrators, or sysadmins, are users who perform system administration work on the Miraheze servers. Their primary task is to ensure that Miraheze and its wikis continue to function smoothly, so that users can read pages and make changes. Aside from maintaining the hardware and software Miraheze utilizes, they are also responsible for performing administrative tasks such as reopening wikis, closing inactive wikis and changing configuration settings.

IRC
https://meta.miraheze.org/wiki/IRC