SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
seima-ophta.fr
SSL/TLS Certificate
SSL/TLS Certificate for seima-ophta.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- seima-ophta.fr
- Valid from
- Jul 14, 2026
- Valid until
- Oct 12, 2026 (81 days remaining)
- Public key
- EC 256-bit
- Serial
- 05FA4A7DAF50BC215B9CD4737D7D429220FF
- SHA-256 fingerprint
- 4F:17:8E:2F:00:65:B1:00:C9:2A:44:D7:C4:F0:3F:19:92:F7:E1:83:A9:D5:73:2E:EF:CF:B4:3F:19:88:A3:A6
- 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.
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Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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