SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for zp.fi
Expiring soon- Issued by (CA)
- Let's Encrypt
- Subject
- zp.fi
- Valid from
- Jun 22, 2026
- Valid until
- Sep 20, 2026 (17 days remaining)
- Public key
- EC 256-bit
- Serial
- 05F90877BD14116E2E64ACBB5E96D97E1F67
- SHA-256 fingerprint
- BA:4F:CD:13:AF:72:64:30:4C:16:2C:7C:55:3C:8F:F3:56:DD:56:F1:41:B1:07:DB:FE:08:F4:F4:29:CD:DC:4E
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
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 2, 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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