SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
x-roads.cz
SSL/TLS Certificate
SSL/TLS Certificate for x-roads.cz
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- alpina.ragtools.cz
- Valid from
- Sep 10, 2026
- Valid until
- Dec 9, 2026 (50 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0664D548602280748DE06659D2A3943137C2
- SHA-256 fingerprint
- 8D:01:97:BB:98:B8:0B:A0:54:ED:F8:75:E7:A3:35:DE:D2:1D:94:99:69:2F:44:A8:91:32:8C:CC:7B:FF:9B:CA
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 16, 2026.
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Uptime
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DNS changes
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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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