SSL Certificate Check
Inspect the certificate and TLS protocol versions served by one public endpoint.
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What it can do
- Ssl Check: Opens its own TLS handshakes to one public host with openssl, using the URL's explicit port or 443 by default, and reports what they establish: which of TLS 1.3, TLS 1.2, TLS 1.1, TLS 1.0 a
What data it sees
Do you need an account
No: the server works without sign-in
Inspect the certificate and TLS protocol versions served by one public endpoint. Reports subject, issuer, hostname coverage, validity dates, and accepted TLS versions. The probe does not verify the full trust chain, revocation, cipher suites, or every node of a load-balanced service.
Server tool list (1)
Raw names from tools/list. Only developers need these.
| ssl_check | Opens its own TLS handshakes to one public host with openssl, using the URL's explicit port or 443 by default, and reports what they establish: which of TLS 1.3, TLS 1.2, TLS 1.1, TLS 1.0 and SSLv3 the server accepts, a protocol-support grade, and the certificate the server actually serves (subject, issuer, covered hostnames, hostname match, and validity dates). Reach for it on padlock, HTTPS, 'Not Secure', certificate-expiry and wrong-hostname questions, and to inspect which certificate is served after a renewal on the probed endpoint; this does not verify every load-balanced node. It does not fetch the page or establish whether plain HTTP is actually served or redirected, and it is not a browser trust decision: no chain-of-trust build, no revocation check, no cipher-suite inspection. Measured 0.05-1.5 seconds against real hosts; each probe is cut off at 12 seconds. |