SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
fos-unm.si
SSL/TLS Certificate
SSL/TLS Certificate for fos-unm.si
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- fos-unm.si
- Valid from
- Sep 1, 2026
- Valid until
- Nov 30, 2026 (68 days remaining)
- Public key
- EC 256-bit
- Serial
- 05A2CF0617C2F070C4716EA18C2488B9D2A7
- SHA-256 fingerprint
- 88:02:C1:7C:F2:A5:18:67:32:50:1C:68:3A:CD:A1:07:19:94:BF:57:D9:F1:BC:C5:64:42:CB:96:18:B2:BF:73
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by fos-unm.si's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch fos-unm.si continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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