SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for tedra.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- advantageplus.de
- Valid from
- Jul 13, 2026
- Valid until
- Oct 11, 2026 (80 days remaining)
- Public key
- EC 256-bit
- Serial
- 059BE0080C8D6DC9EDBC25F88C77F1174825
- SHA-256 fingerprint
- DC:EE:70:61:C1:CC:48:CF:8A:AF:16:E0:B4:6C:74:20:F8:03:6C:41:03:73:A6:5E:93:CF:AA:06:D1:46:A8:46
- 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.
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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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