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 flux.si
Untrusted chain- Issued by (CA)
- Let's Encrypt
- Subject
- flux.si
- Valid from
- Jul 6, 2026
- Valid until
- Oct 4, 2026 (30 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05D779B35F2976AA0A16D3FA6834BA77FBC9
- SHA-256 fingerprint
- 14:E0:39:5E:AD:36:36:12:34:33:36:1D:74:42:7C:73:34:9D:17:B9:81:13:4E:D1:77:27:F7:CF:33:34:AB:ED
- 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 flux.si 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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