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 vo.cz
Self-signed- Issued by (CA)
- WIN-DKT3N4NFLTT
- Subject
- WIN-DKT3N4NFLTT
- Valid from
- Oct 15, 2025
- Valid until
- Apr 16, 2026 (expired 139 days ago)
- Public key
- RSA 2048-bit
- Serial
- 696270F2795D05AE4B9B4079347A49B3
- SHA-256 fingerprint
- D2:51:C2:1E:49:9D:B3:C5:48:B9:D1:64:B0:0D:96:39:F3:C5:C1:2F:80:5C:A4:2A:50:96:F1:C3:7D:DD:9B:D9
- Chain
- —
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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This is today's certificate. Turn on monitoring and we'll watch vo.cz continuously, notifying you the moment anything moves across all three signals:
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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