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 w-energies.fr

Valid
Issued by (CA)
DigiCert Inc
Subject
espace-clients.dalkia.fr
Valid from
Oct 21, 2026
Valid until
May 7, 2027 (179 days remaining)
Public key
RSA 2048-bit
Serial
059E08878013CA8EDF1536B6B19D9A63
SHA-256 fingerprint
A5:F1:6C:E6:49:A0:84:54:67:FD:CA:EB:B4:AB:89:D9:A1:5F:F9:B4:CD:E4:E3:7B:05:8C:90:45:30:40:2B:96
Chain
DigiCert Global G2 TLS RSA SHA256 2020 CA1 → DigiCert Global Root G2
Subject Alternative Names (17)
clervia.info, ec.ecochaleurdebrest.fr, egurretiketmoi.fr, espace-clients.chaleur-urbaine-r3c.com, espace-clients.clea-energies.fr, espace-clients.dalkia.fr, espace-clients.energiesdugrandparis.fr, mons-energie.fr, nimergie.online, portail.mons-energie.fr, portail.nimergie.online, portail.roubaix-energies.fr, portail.rouengrammontenergie.fr, portail.venissieux-energies.info, roubaix-energies.fr, rouengrammontenergie.fr, w-energies.fr

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

We've observed 1 previous certificate for this host. This certificate has been served since Nov 4, 2026.

Never get surprised by w-energies.fr's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch w-energies.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.