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 up-rs.si
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.up-rs.si
- Valid from
- Dec 16, 2025
- Valid until
- Jan 15, 2027 (163 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 80D81927A8836BD4787247A174C08E65
- SHA-256 fingerprint
- 5F:88:FA:CE:4B:FE:26:D5:73:B5:A0:FC:97:92:F8:0C:4D:F8:58:0E:0B:DE:9F:56:E2:7F:5C:22:CF:02:E4:A1
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Aug 5, 2026.
Never get surprised by up-rs.si's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch up-rs.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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