SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
insig.org
SSL/TLS Certificate
SSL/TLS Certificate for insig.org
Untrusted chain- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- *.insig.org
- Valid from
- Apr 18, 2026
- Valid until
- Nov 3, 2026 (28 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 69905181AA6A2877E40E9829B0B92C62
- SHA-256 fingerprint
- 99:3B:0A:12:6D:0B:87:52:5C:3A:4F:9F:57:5F:80:9D:C4:A6:F4:B5:B8:04:23:DE:C1:4B:10:DD:FA:04:E0:7D
- Chain
- —
Certificate Authority Authorization (CAA)
CAA restricts issuance to certum.pl; we couldn't map the serving CA (Asseco Data Systems S.A.) to one of these identifiers.
This certificate has been served since Aug 6, 2026.
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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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