SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
it-guardian.fr
SSL/TLS Certificate
SSL/TLS Certificate for it-guardian.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- it-guardian.fr
- Valid from
- Oct 12, 2026
- Valid until
- Jan 10, 2027 (83 days remaining)
- Public key
- EC 256-bit
- Serial
- 0520EA9CCC641DAD5F31DA6195FCE22AE4F8
- SHA-256 fingerprint
- 2C:7A:0F:DE:AB:C5:AE:7B:91:22:5A:15:7C:43:5F:03:E2:52:D4:22:63:EB:CA:CF:32:E8:1F:4D:65:E6:B8:87
- 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.
This certificate has been served since Aug 29, 2026.
Never get surprised by it-guardian.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch it-guardian.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.