SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
jan-klaassen.com
SSL/TLS Certificate
SSL/TLS Certificate for jan-klaassen.com
Valid- Issued by (CA)
- Google Trust Services
- Subject
- jan-klaassen.com
- Valid from
- Sep 29, 2026
- Valid until
- Dec 28, 2026 (51 days remaining)
- Public key
- EC 256-bit
- Serial
- BEA43A71CE83CDF00E6613D3257CE560
- SHA-256 fingerprint
- CB:85:FB:12:E2:69:88:45:7D:CF:38:D3:40:7D:A6:F2:E5:37:6F:0A:84:D5:70:E3:D3:D9:D9:49:89:2E:4A:A0
- Chain
- WE1 → GTS Root R4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Nov 1, 2026.
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Uptime
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DNS changes
We watch NS, MX, CAA, CNAME, TXT and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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