SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for yk-b.ch
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- yk-b.ch
- Valid from
- Jun 20, 2026
- Valid until
- Jan 4, 2027 (158 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 946A63AEB17BD0B1B2B8CEFED13A2B7C
- SHA-256 fingerprint
- AF:CB:F0:5D:E0:77:97:06:73:F0:E0:9D:0E:7E:C7:B9:A1:18:25:4F:CB:8D:11:AF:80:02:AD:B8:F5:2A:71:55
- 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
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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