SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
iut-brest.fr
SSL/TLS Certificate
SSL/TLS Certificate for iut-brest.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- iut-brest.fr
- Valid from
- Jun 6, 2026
- Valid until
- Sep 4, 2026 (33 days remaining)
- Public key
- EC 256-bit
- Serial
- 06A33B293033FF88808EE02646DE3D4DAC54
- SHA-256 fingerprint
- 85:E7:4B:8D:5A:7F:50:7B:BB:9F:23:8D:6C:96:2A:28:63:A8:3E:56:7B:8C:22:BB:3B:D6:CF:7D:1C:DF:88:D4
- 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 iut-brest.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch iut-brest.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, 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.