SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
geo-diagnostic.fr
SSL/TLS Certificate
SSL/TLS Certificate for geo-diagnostic.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- geo-diagnostic.fr
- Valid from
- Jul 12, 2026
- Valid until
- Oct 10, 2026 (58 days remaining)
- Public key
- EC 256-bit
- Serial
- 05B84A1CD0C6E2FB8F32F8A1FFB2BF768126
- SHA-256 fingerprint
- C8:4B:7C:D4:E8:39:F0:FD:70:56:C0:88:C1:56:F6:B2:1C:3D:5E:DB:D5:12:FA:86:23:94:9A:71:89:F7:FC:DA
- 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.
Never get surprised by geo-diagnostic.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch geo-diagnostic.fr continuously, notifying you the moment anything moves across all three signals:
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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