SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
clickster.at
SSL/TLS Certificate
SSL/TLS Certificate for clickster.at
Self-signed- Issued by (CA)
- dummy.local
- Subject
- dummy.local
- Valid from
- Jun 22, 2025
- Valid until
- Jun 22, 2026 (expired 35 days ago)
- Public key
- RSA 2048-bit
- Serial
- C27547037F9D019A
- SHA-256 fingerprint
- 8D:97:69:5D:91:DA:B2:93:34:91:66:D5:BB:DE:45:7B:7F:DF:72:2F:22:1B:C5:41:B5:F7:BC:EE:0F:62:A9:66
- Chain
- dummy.local
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 Jul 26, 2026.
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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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