slack.com

slack.com looks reachable from here — but still can't load it?

If Website Worth Up or Down says a site is up but it still won't open for you, the issue is usually on your end rather than the site's — start with these:

• Hard-refresh the page (Ctrl/Cmd + Shift + R) to rule out a stale cached version.
• Try the site in a private/incognito window — this rules out browser extensions and stored cookies as the cause.
• Flush your local DNS cache (on Windows: open Command Prompt and run ipconfig /flushdns).
• Try a different network — for example switch from Wi-Fi to mobile data — to check whether it's your ISP or router.
• If you're on a work or school network, the site may simply be blocked by a firewall or content filter.

If none of that helps and the site shows as “down” above, it's most likely an outage on their end — try again in a few minutes.

How this check works

When you load this page, Website Worth Up or Down makes a live connection to slack.com and records exactly how it responds — the same request your own browser would make. Alongside the basic up/down result, we run a handful of supporting checks: DNS resolution, SSL certificate validity and expiry, domain registration status, and which ports respond, all shown in the cards above.

Want to keep an eye on slack.com going forward? Tap the star next to its name to save it, then turn on alerts from your saved sites page and we'll notify you the moment we detect it's down.