Thanks for the heads up I was wondering what was going on! In the future, linking to a company's status page (almost always located at status.companyurl) is even more helpful! https://status.slack.com in this case.
When something is down it's almost never immediately reflected on the status page. I always resort to Twitter.
same. didn't see anything on twitter too. (at least for the first five minutes)
when i first checked status.slack.com does show up. Still i couldn't reach slack.com. That's why put that on the link. (Looks like once posted can't update the URL)