SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
osk-polymer.com
SSL/TLS Certificate
SSL/TLS Certificate for osk-polymer.com
Valid- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- osk-polymer.com
- Valid from
- Oct 4, 2026
- Valid until
- Apr 21, 2027 (186 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0390813B1D909C2484A55D8DFAF3AD40
- SHA-256 fingerprint
- 7E:1F:F9:69:74:7D:AD:AD:3D:DE:04:87:DC:06:14:3F:98:4B:5F:49:73:0A:2E:C0:56:12:B9:A0:ED:10:60:6C
- Chain
- Certum DV TLS G2 R39 CA → Certum Trusted Root CA → Certum Trusted Network CA
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Oct 17, 2026.
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Uptime
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DNS changes
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TLS certificate
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