SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
janko-soft.com
SSL/TLS Certificate
SSL/TLS Certificate for janko-soft.com
Valid- Issued by (CA)
- Google Trust Services
- Subject
- janko-soft.com
- Valid from
- Sep 12, 2026
- Valid until
- Dec 11, 2026 (88 days remaining)
- Public key
- EC 256-bit
- Serial
- 8A5F83A6E571472F0EE2FB7C97F53378
- SHA-256 fingerprint
- 54:CE:8A:EA:CC:68:08:11:57:CE:F3:13:A9:E8:A1:16:C2:72:B6:6C:58:56:09:95:A4:5E:2B:FF:C4:4B:B2:A4
- Chain
- WE1 → GTS Root R4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Sep 4, 2026.
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Uptime
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DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME 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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