SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
a3um-lm.sk
SSL/TLS Certificate
SSL/TLS Certificate for a3um-lm.sk
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- abc.lmn.sk
- Valid from
- Aug 26, 2026
- Valid until
- Nov 24, 2026 (77 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 050CD141712C699B34881CBE6E17FCDCEC2C
- SHA-256 fingerprint
- 90:9A:6D:0A:26:D1:90:E6:A5:F6:2D:08:CC:2C:E2:92:94:79:09:48:8C:68:5F:DE:6E:AA:BF:4F:AA:68:42:43
- 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.
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Uptime
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DNS changes
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TLS certificate
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