SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dr-skanngiesser.de
SSL/TLS Certificate
SSL/TLS Certificate for dr-skanngiesser.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- dr-kanngiesser.de
- Valid from
- Oct 26, 2026
- Valid until
- Jan 24, 2027 (69 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0504354ABBD0A448A09FD19C9B22FEA86ED7
- SHA-256 fingerprint
- 39:59:2F:FE:94:52:4B:79:C6:12:89:23:28:75:F9:98:54:1B:E4:87:EC:C8:C1:12:86:33:A8:00:41:10:81:17
- Chain
- YR2 → Root YR → 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, CNAME, TXT 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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