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 d-s.si
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- www.hr.d-s.si
- Valid from
- Jun 21, 2026
- Valid until
- Sep 19, 2026 (56 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 056191F0F2B6EE0F2E64EDD9A9A462F14E1F
- SHA-256 fingerprint
- 6F:F1:35:51:04:DD:6C:30:8B:68:63:1B:1C:54:F1:C9:AD:C4:25:C9:E4:02:C7:E2:56:97:11:58:52:2A:09:9C
- 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.
Never get surprised by d-s.si's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch d-s.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.