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 houches-school-physics.com

Hostname mismatch
Issued by (CA)
Hellenic Academic and Research Institutions CA
Subject
*.univ-grenoble-alpes.fr
Valid from
Nov 19, 2025
Valid until
Nov 19, 2026 (39 days remaining)
Public key
RSA 2048-bit
Serial
67304FDBEAF1D9BF261FE2F276267F5E
SHA-256 fingerprint
84:DA:D8:AC:41:28:73:02:6C:20:CC:E8:4B:11:4D:00:06:D9:C5:EE:41:28:96:EC:00:EF:74:68:29:D2:E7:3C
Chain
GEANT TLS RSA 1 → HARICA TLS RSA Root CA 2021 → Hellenic Academic and Research Institutions RootCA 2015
Subject Alternative Names (2)
*.univ-grenoble-alpes.fr, univ-grenoble-alpes.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 Jul 20, 2026.

Never get surprised by houches-school-physics.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch houches-school-physics.com 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.

Monitor this certificate free

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