Live certificate lookup — free, no sign-up

Check any domain’s
SSL certificate status

See expiry date, issuer, hostname match and the full trust chain — the exact certificate your visitors’ browsers see.

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What this SSL checker reports

Six things every certificate report includes, pulled straight from the live handshake.

Certificate validity

Confirms the certificate is currently within its valid date range.

Expiration countdown

Shows exactly how many days remain before renewal is needed.

Hostname match

Checks the domain against the certificate’s CN and SAN entries.

Issuer & chain

Identifies the certificate authority and walks the trust chain.

Self-signed detection

Flags certificates that were not issued by a recognised authority.

Fingerprints

Returns SHA-256 and SHA-1 fingerprints for verification and pinning.

How the check works

  1. Enter a domain

    Type or paste the domain — no https:// or path needed.

  2. We connect over TLS

    A live connection is made on port 443 to read the real certificate.

  3. Get the full report

    Validity, expiry, issuer, hostname match and trust chain — instantly.

Frequently asked questions