SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
lumo-tech.fr
SSL/TLS Certificate
SSL/TLS Certificate for lumo-tech.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- lumo-tech.fr
- Valid from
- Sep 24, 2026
- Valid until
- Dec 23, 2026 (67 days remaining)
- Public key
- EC 256-bit
- Serial
- 0519319F9FE894ECA4383DEDE02CC540DB2A
- SHA-256 fingerprint
- F0:D6:2A:AA:AD:33:93:59:F8:04:6E:04:5C:3A:5F:E9:5C:DB:E1:8E:A1:C4:38:76:B0:3A:73:F1:D6:D9:05:1D
- 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
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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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