SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
so-ingenierie.fr
SSL/TLS Certificate
SSL/TLS Certificate for so-ingenierie.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- so-ingenierie.fr
- Valid from
- Sep 8, 2026
- Valid until
- Dec 7, 2026 (30 days remaining)
- Public key
- EC 256-bit
- Serial
- 06150AC2EB7EB18FD659EB35F29F37B3CB78
- SHA-256 fingerprint
- A8:28:03:8C:CD:6A:FA:52:32:D9:C7:8A:44:1F:EC:6D:0A:B7:08:DA:C9:4A:B5:CC:63:18:74:CA:75:BC:06:BA
- 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 Sep 13, 2026.
Never get surprised by so-ingenierie.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch so-ingenierie.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.