Basic monitoringSignal
“It responds.”
- Does the site respond?
- Alert and timestamp
- No expiry context
WEBSITE MONITORING AND TESTING · QUEBEC
Check a domain's TLS certificate, DNS records and expiry date in seconds, graded A–F. No account, no card, unlimited.
| Service | Monitors | Domains | History | Price |
|---|---|---|---|---|
| TrackSSL | TLS only | 2 free · 20 | not published | $19/mo |
| SSLMate Cert Spotter | TLS only | 20 | not published | $15/mo · none free |
| Oh Dear | TLS, domain, DNS | 2 | not published | $17/mo · none free |
| UptimeRobot | TLS, domain, DNS | 50 free · 10 | 3 months · 12 months | $9/mo |
| certs.testraptor.com | TLS, domain, DNS | Unlimited · free | kept long-term | $0 |
A certificate check costs a handful of kilobytes: one TLS handshake, six DNS queries, one RDAP query. Our competitors sell it by the monitor because it lives on a monitoring platform rented by the monitor. That's why we count your domains and not your checks, and why we keep history instead of cutting it off at three months.
The result is read live from the registry and the server — not from a cached dashboard — so the dates you see are the ones your browser actually observed.
Sources: trackssl.com/pricing · sslmate.com/certspotter/pricing · ohdear.app/pricing · uptimerobot.com/pricing. The “not published” columns mean the service doesn't state a retention period on its pricing page, not that it has none. Found an error? Write to us and we'll correct it.
Beyond the ping
An uptime monitor only checks that an endpoint responds. We check the TLS certificate, the DNS records and the domain's expiry date — and tell you what to do before it breaks.
Fewer bad surprises. More certainty.
01
No account, no card. The field at the very top of the page is all you need.
02
Three independent checks launched at the same time, not one after another.
03
A letter grade (A–F) and score out of 100, plus expiry dates and NS records -- or a clear message if something fails.
04
Checks are unlimited and kept in your history. Re-run the same domain to follow its changes over time.
Who it's for
Don't let an expired certificate take your app offline.
A client-ready report, no jargon.
An offline site is a lost sale.
Watch your own domains before your clients'.
FREE
$0/mo
Unlimited domains
Safety net
Check a domain now — no account, no card.
A real check. No account required.