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SSL certificate monitoring

SSL certificate monitoring

Every https monitor gets certificate monitoring at no extra step. Once a day we read the certificate, store who issued it and when it expires, and email you before it runs out.

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Live check of uptime.rs

Valid certificate, 82 days left

Issued to
uptime.rs
Issuer
Let's Encrypt
Valid from
21 Oct 2026
Expires
19 Jan 2027 · 82 days left
Trusted by browsers
Yes
Names
uptime.rs
Checked
10 seconds ago

Live right now

27,979sites monitored
1,706,481checks in the last 24 hours
6check locations
60days of history

SSL certificate monitoring

Warnings at 14 days, 3 days and on the day

Expiry warnings arrive by email and on your alert channels. Several certificates expiring on the same day arrive in one message.

Issuer and expiry on every monitor

The monitor page shows the issuer, the expiry date and days left. The monitor list flags certificates that expire soon, so renewals that failed stand out.

Broken certificates count as down

An expired, self-signed or wrong-host certificate fails the check, and the monitor page names the problem.

Custom ports

Certificates on other ports (https://example.com:8443) are read on that port.

How it works

  1. Create an accountPick a username; it becomes your status page address.
  2. Add your sitesPaste a list or import from your panel or DNS provider.
  3. RelaxWe check every minute and tell you the moment something is really down.

Questions

When do SSL expiry alerts arrive?

14 days before the certificate expires, 3 days before, and on the day it expires.

Do I need to add SSL monitoring separately?

No. Every https monitor gets it automatically.

Does it work with Let's Encrypt?

Yes. Let's Encrypt certificates last 90 days, so a failed automatic renewal is exactly what these alerts catch.

Read the docs →

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