SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
strukto.fr
SSL/TLS Certificate
SSL/TLS Certificate for strukto.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- strukto.fr
- Valid from
- Sep 23, 2026
- Valid until
- Dec 22, 2026 (70 days remaining)
- Public key
- EC 256-bit
- Serial
- 063BB52E455F8398B3C0E455C5F74ECF7C48
- SHA-256 fingerprint
- 85:08:C0:10:C2:BE:22:E8:74:21:73:8F:1C:9F:44:E2:9C:D3:B6:2D:E8:72:B0:9D:3C:6A:70:86:E1:C4:E7:93
- 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.
This certificate has been served since Oct 6, 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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