SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
go-lum.fr
SSL/TLS Certificate
SSL/TLS Certificate for go-lum.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- go-lum.fr
- Valid from
- Oct 24, 2026
- Valid until
- Jan 22, 2027 (76 days remaining)
- Public key
- EC 256-bit
- Serial
- 051592C77250610D23A67581BFEE3EF977ED
- SHA-256 fingerprint
- 9F:DA:2D:86:FE:D1:2E:90:86:75:61:5D:94:87:02:5A:D4:1F:20:C3:B2:F4:65:7C:7C:42:05:76:FC:F9:B7:BB
- 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.
Never get surprised by go-lum.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch go-lum.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, 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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