SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sgi-isny.de
SSL/TLS Certificate
SSL/TLS Certificate for sgi-isny.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.sgi-isny.de
- Valid from
- Oct 16, 2025
- Valid until
- Oct 30, 2026 (93 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 2AD4D7EF5B53C7FD333B18D3FFD23546
- SHA-256 fingerprint
- 2C:A6:C9:D2:70:DE:34:EC:FB:00:D5:0B:D0:6B:56:15:0F:81:4F:AC:AB:8C:8C:B1:E8:CF:60:81:C9:DF:39:A5
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
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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