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 sela.si
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- sela.si
- Valid from
- Sep 26, 2025
- Valid until
- Dec 25, 2025 (expired 294 days ago)
- Public key
- RSA 2048-bit
- Serial
- 0698FB0A734821F7E82E79A8BCF9D8587C66
- SHA-256 fingerprint
- 40:9C:6D:7F:B4:B5:65:52:99:D1:50:12:F5:3B:2E:B9:EC:32:4A:85:F9:03:4C:29:28:FE:B8:65:0A:1A:5A:3F
- Chain
- R13 → 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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This is today's certificate. Turn on monitoring and we'll watch sela.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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