SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
lantek-systemes.fr
SSL/TLS Certificate
SSL/TLS Certificate for lantek-systemes.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- lanteksms.com
- Valid from
- Jul 20, 2026
- Valid until
- Oct 18, 2026 (80 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0577CC47C97C02C953119B76E9159A4B3840
- SHA-256 fingerprint
- C0:0B:BD:99:50:91:0F:3E:7C:8B:EB:9F:C7:9F:72:1D:E6:E2:E6:57:96:19:FB:FB:29:34:7D:FE:3B:8A:F8:21
- 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.
Never get surprised by lantek-systemes.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch lantek-systemes.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.
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