SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
uni-sg.ch
SSL/TLS Certificate
SSL/TLS Certificate for uni-sg.ch
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- www.hsg-sqr.ch
- Valid from
- Jun 27, 2026
- Valid until
- Sep 25, 2026 (43 days remaining)
- Public key
- EC 256-bit
- Serial
- 05DED5ACE12EE46CC3FF2BED16DF0F27A333
- SHA-256 fingerprint
- 67:DA:3A:8B:5F:28:AB:37:F7:89:F4:22:06:F5:43:79:07:57:6D:7A:F8:A4:43:AE:09:78:9E:35:50:4B:F2:46
- 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 uni-sg.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch uni-sg.ch 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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