SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
agg-schulung.de
SSL/TLS Certificate
SSL/TLS Certificate for agg-schulung.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- www.agg-schulung.de
- Valid from
- Jun 22, 2026
- Valid until
- Jan 2, 2027 (148 days remaining)
- Public key
- RSA 2048-bit
- Serial
- C3E6C9E284761CE37044F399DFB3BD65
- SHA-256 fingerprint
- 85:34:68:54:1C:1A:EC:7B:23:4D:4D:39:5A:17:93:17:25:75:40:25:45:54:5E:AD:FB:BD:59:12:1D:CC:A3:18
- 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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