SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
wfg-kassel.de
SSL/TLS Certificate
SSL/TLS Certificate for wfg-kassel.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.wfg-kassel.de
- Valid from
- Jul 9, 2026
- Valid until
- Jan 19, 2027 (171 days remaining)
- Public key
- RSA 2048-bit
- Serial
- FF81F7FB74482ABCFB7134B50B41C92A
- SHA-256 fingerprint
- EE:0F:6E:0E:A2:9E:DA:57:AA:6E:2D:30:8E:A9:27:34:3A:72:E0:C6:E7:29:82:87:02:50:CF:70:A0:91:D6:40
- 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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