SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
prekon.de
SSL/TLS Certificate
SSL/TLS Certificate for prekon.de
Untrusted chain- Issued by (CA)
- Let's Encrypt
- Subject
- prekon.de
- Valid from
- Jul 16, 2026
- Valid until
- Oct 14, 2026 (79 days remaining)
- Public key
- EC 256-bit
- Serial
- 05B617A103A0785B6F420BC43F8AAE0CBBC6
- SHA-256 fingerprint
- 4D:10:59:22:CD:99:E6:DA:84:D5:69:77:E6:22:86:43:3D:89:13:D9:6B:77:88:6B:71:95:9D:F3:73:C2:E2:26
- Chain
- YE1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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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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