SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
iss-maincampus.ch
SSL/TLS Certificate
SSL/TLS Certificate for iss-maincampus.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- *.iss-maincampus.ch
- Valid from
- Jun 6, 2026
- Valid until
- Sep 4, 2026 (40 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 056C320A2E67395638040AD993B00CCF7DBF
- SHA-256 fingerprint
- 6B:45:D4:80:7C:2E:69:24:13:70:33:71:5E:AE:55:20:1F:55:66:F5:D8:9A:3E:50:12:7B:03:C2:8A:4E:41:3F
- Chain
- YR2 → 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 iss-maincampus.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch iss-maincampus.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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