SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dietec-ffo.de
SSL/TLS Certificate
SSL/TLS Certificate for dietec-ffo.de
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- dietec.de
- Valid from
- Apr 22, 2025
- Valid until
- Jul 21, 2025 (expired 374 days ago)
- Public key
- EC 256-bit
- Serial
- 05BF5FF20896A5B0FCDC3F0D4462EB44AC36
- SHA-256 fingerprint
- 69:86:CE:B6:41:BB:84:69:28:88:BB:04:D3:3E:4D:4E:6A:AB:CB:F0:B6:F7:82:D1:2C:FE:9F:B4:6D:53:47:1F
- Chain
- E5 → 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 dietec-ffo.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch dietec-ffo.de 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.