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 vgd.cz
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- www.vgd.cz
- Valid from
- Nov 20, 2025
- Valid until
- Feb 18, 2026 (expired 155 days ago)
- Public key
- RSA 4096-bit
- Serial
- 069251EE0BF8F757D0E1C74BB4B1B8A9E2F9
- SHA-256 fingerprint
- B1:8E:7D:7A:D1:4C:B1:26:DF:59:89:35:79:93:34:42:73:06:21:00:AE:3A:02:52:33:D7:72:15:F4:A8:9D:D9
- Chain
- R13 → ISRG Root X1
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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