SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
a-antenni.fi
SSL/TLS Certificate
SSL/TLS Certificate for a-antenni.fi
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- a-antenni.fi
- Valid from
- Sep 18, 2026
- Valid until
- Dec 17, 2026 (57 days remaining)
- Public key
- EC 256-bit
- Serial
- 05568DF8E4CC48B0575DA5021DCC9B05EC46
- SHA-256 fingerprint
- B7:A8:C8:AF:38:AD:20:EB:6C:B4:07:E0:99:E8:D6:0D:6B:BA:05:9C:C3:80:40:9D:DC:1F:2B:7C:20:9C:EF:C1
- Chain
- YE2 → 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.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 23, 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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