SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
cdu-nrw.de
SSL/TLS Certificate
SSL/TLS Certificate for cdu-nrw.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- cdu-nrw.de
- Valid from
- Oct 7, 2026
- Valid until
- Jan 5, 2027 (53 days remaining)
- Public key
- EC 256-bit
- Serial
- 06C4835E1A1CF546AB4B2D265101A09C873B
- SHA-256 fingerprint
- 0F:EA:97:7C:BB:E8:0C:14:C2:54:43:39:46:74:60:A3:63:09:40:35:0A:C3:BD:10:05:4E:5E:61:CE:F7:4C:24
- Chain
- YE1 → 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.
We've observed 1 previous certificate for this host. This certificate has been served since Oct 8, 2026.
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Uptime
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DNS changes
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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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