SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
hk-essen.de
SSL/TLS Certificate
SSL/TLS Certificate for hk-essen.de
Valid- Issued by (CA)
- ZeroSSL GmbH
- Subject
- hk-essen.de
- Valid from
- Sep 15, 2026
- Valid until
- Dec 14, 2026 (80 days remaining)
- Public key
- EC 256-bit
- Serial
- 50BD601D41285424CDCAF1DEC1CFBA73
- SHA-256 fingerprint
- AD:AE:90:14:22:A5:98:D0:7A:33:3E:55:D9:14:15:8A:58:58:95:EB:85:C0:90:85:1F:F5:FE:18:BD:1C:CC:27
- Chain
- ZeroSSL ECC DV SSL CA 2 → Sectigo Public Server Authentication Root E46 → USERTrust ECC 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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