SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sup-pardubice.cz
SSL/TLS Certificate
SSL/TLS Certificate for sup-pardubice.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.sup-pardubice.cz
- Valid from
- Aug 23, 2026
- Valid until
- Nov 21, 2026 (69 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05B9A7633AF9C4FA7646B8FBFA8E0DBE26F0
- SHA-256 fingerprint
- 0E:1C:AE:DA:DB:28:72:BD:47:C7:0F:A2:E4:44:EE:ED:87:44:4D:AB:94:BF:1C:86:25:7A:E4:09:EE:66:F8:84
- Chain
- YR1 → Root YR → ISRG Root X1
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 Aug 31, 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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