Below is a list of recent alerts. If there's something listed here, SRE has already been paged (in which case, please don't page us again unless you're sure you're reporting a new issue).
If you are confident there's a widespread issue affecting users, or some other emergency (e.g. your shell account was compromised), and that it isn't known to us already, you can fill out a form to page us. Paging is restricted to WMF staff and other trusted individuals, as it can wake up engineers who are asleep.