SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
win-win.si
SSL/TLS Certificate
SSL/TLS Certificate for win-win.si
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- win-win.si
- Valid from
- Sep 10, 2026
- Valid until
- Dec 9, 2026 (77 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 053A8412BA8C8322539E3162A4B78BD88E58
- SHA-256 fingerprint
- DF:BD:AB:5A:79:41:74:B3:90:19:2C:A4:48:E7:28:14:2A:5B:FF:1B:44:89:1F:EE:FB:8E:3F:8D:D7:80:D3:52
- 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 win-win.si's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch win-win.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.