SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sir-pat.de
SSL/TLS Certificate
SSL/TLS Certificate for sir-pat.de
Valid- Issued by (CA)
- ZeroSSL GmbH
- Subject
- *.sir-pat.de
- Valid from
- Aug 1, 2026
- Valid until
- Oct 30, 2026 (51 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 6EE16E2FD6CF2E1BC75091A221DABFB1
- SHA-256 fingerprint
- C2:51:7F:D0:BE:7C:35:61:3E:EC:0A:BB:64:AF:C5:A7:23:F2:73:B0:B6:A2:65:10:50:61:D8:E4:06:EC:48:50
- Chain
- ZeroSSL RSA DV SSL CA 2 → Sectigo Public Server Authentication Root R46
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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