SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gie-aptitude.fr
SSL/TLS Certificate
SSL/TLS Certificate for gie-aptitude.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- gie-aptitude.fr
- Valid from
- Jun 30, 2026
- Valid until
- Sep 28, 2026 (42 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05E798E64B0B9247EB023EFA800CE03FFD1B
- SHA-256 fingerprint
- BC:84:5E:BC:9C:2F:4F:9A:6D:97:B1:7F:59:29:20:CE:03:A3:C2:94:EB:98:3A:28:08:75:BD:8F:C2:A9:3D:84
- Chain
- YR1 → Root YR → 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 Jul 29, 2026.
Never get surprised by gie-aptitude.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch gie-aptitude.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.