SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
heiko-heise.de
SSL/TLS Certificate
SSL/TLS Certificate for heiko-heise.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- heiko-heise.de
- Valid from
- May 20, 2026
- Valid until
- Dec 4, 2026 (113 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 1460353A0141B117C074D214E2646826
- SHA-256 fingerprint
- 6D:CE:E9:6A:61:10:4B:18:F7:05:EC:D8:66:D6:90:D2:F3:98:E2:C8:77:7D:45:15:D3:C2:12:4D:43:C5:A3:4E
- 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
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TLS certificate
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