SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for lubin-energy.fr

Valid
Issued by (CA)
Let's Encrypt
Subject
lubin.fr
Valid from
Nov 10, 2026
Valid until
Feb 8, 2027 (85 days remaining)
Public key
EC 256-bit
Serial
068D2F014BCF988F45606748CC4E40857FD0
SHA-256 fingerprint
37:06:FB:CB:FC:0B:DA:71:7D:37:16:46:88:8C:09:96:4E:16:8A:8C:C7:A7:61:2C:56:A0:B0:D9:F8:80:49:B9
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (5)
extranet.lubin.fr, lubin-energy.fr, lubin.fr, www.lubin-energy.fr, www.lubin.fr

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 Nov 11, 2026.

Never get surprised by lubin-energy.fr's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch lubin-energy.fr continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.