SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
cup-security.cz
SSL/TLS Certificate
SSL/TLS Certificate for cup-security.cz
Self-signed- Issued by (CA)
- 3nicom-www72.zcom.cz
- Subject
- 3nicom-www72.zcom.cz
- Valid from
- Apr 24, 2018
- Valid until
- Apr 21, 2028 (594 days remaining)
- Public key
- RSA 2048-bit
- Serial
- CCE19B2EEF440A05
- SHA-256 fingerprint
- 39:9C:69:FB:45:99:83:02:D2:A4:87:20:3E:6B:AD:C6:77:72:8B:4A:00:1F:DE:15:BB:C0:9B:19:7F:ED:36:89
- Chain
- 3nicom-www72.zcom.cz
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
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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