Monitoring

Avoid expired SSL certificates and domains.

Written by noc724 team1 min readUpdated Oct 9, 2026

Two of the most avoidable outages are an expired SSL certificate and an expired domain. Both are predictable - and both still take well-known sites offline every year.

What happens when they expire

  • Expired SSL: browsers show a full-page security warning and most visitors leave; APIs and apps refuse to connect.
  • Expired domain: the site, email and everything on the domain stop working - and the domain can be lost if it isn't renewed in time.

How to check expiry dates

  • SSL: click the padlock in the browser and open the certificate details, or use an SSL monitor.
  • Domain: look the domain up in WHOIS (for .ir domains, at the IRNIC registry) and note the expiry date.

Automate the reminders

Auto-renewal fails silently more often than you'd think (expired cards, changed DNS, a server that can't reach the certificate authority). noc724 tracks certificate and domain expiry dates and sends reminders by SMS, Telegram or Bale ahead of time, and alerts you immediately if a certificate becomes invalid.

Frequently asked questions

  • At least 14-30 days before expiry for SSL and 30 days or more for domains, so there's time to fix renewal problems.

  • Yes, domain expiry monitoring covers .ir domains as well as international ones.

    Downtime happens. Get notified!

    noc724 checks your websites, servers and APIs around the clock and alerts you by SMS, Telegram or Bale the moment something breaks.

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The noc724 team

Uptime monitoring engineers

We build and run noc724, an uptime monitoring service that checks websites, servers and APIs from several cities in Iran. These guides come from the problems we and our users run into while keeping services online.

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