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Substack

substack.comIs Substack down? Outage history

Uptime

90 daysAll time
99.71%
Since 1 Oct 2026No outagesToday

Last 24 hours

428 ms avg
24 hours ago96 checks, none failedNow
No problemsSome checks failedMostly failingRestrictedNo dataResponse time, red where checks failedBars: 16 days · line: 24 hours in 15-minute steps · UTC · refreshes every minute

The website responded successfully to our latest automated request.

Last checked
16 Oct, 10:52 UTC
HTTP response
200
Response time
454 msFastest, from Frankfurt, Germany
Check interval
Every 15 minutes

Recent checks

Latest 24 checks, all times UTC
Checked atObservationHTTPResponse timeLocation
16 Oct, 10:52 UTCWebsite responding200454 msFrankfurt, Germany
16 Oct, 10:37 UTCWebsite responding200441 msFrankfurt, Germany
16 Oct, 10:22 UTCWebsite responding200479 msFalkenstein, Germany
16 Oct, 10:07 UTCWebsite responding200429 msFrankfurt, Germany
16 Oct, 09:52 UTCWebsite responding200439 msFalkenstein, Germany
16 Oct, 09:37 UTCWebsite responding200468 msFalkenstein, Germany
16 Oct, 09:22 UTCWebsite responding200441 msFrankfurt, Germany
16 Oct, 09:07 UTCWebsite responding200460 msFalkenstein, Germany
16 Oct, 08:52 UTCWebsite responding200401 msFrankfurt, Germany
16 Oct, 08:37 UTCWebsite responding200434 msFrankfurt, Germany
16 Oct, 08:22 UTCWebsite responding200463 msFalkenstein, Germany
16 Oct, 08:07 UTCWebsite responding200456 msFalkenstein, Germany
16 Oct, 07:52 UTCWebsite responding200633 msFrankfurt, Germany
16 Oct, 07:37 UTCWebsite responding200442 msFalkenstein, Germany
16 Oct, 07:22 UTCWebsite responding200440 msFalkenstein, Germany
16 Oct, 07:07 UTCWebsite responding200383 msFrankfurt, Germany
16 Oct, 06:52 UTCWebsite responding200386 msFrankfurt, Germany
16 Oct, 06:37 UTCWebsite responding200399 msFalkenstein, Germany
16 Oct, 06:22 UTCWebsite responding200407 msFalkenstein, Germany
16 Oct, 06:07 UTCWebsite responding200380 msFrankfurt, Germany
16 Oct, 05:52 UTCWebsite responding200390 msFalkenstein, Germany
16 Oct, 05:37 UTCWebsite responding200364 msFrankfurt, Germany
16 Oct, 05:22 UTCWebsite responding200376 msFrankfurt, Germany
16 Oct, 05:07 UTCWebsite responding200409 msFalkenstein, Germany

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