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 sk-ag.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.sk-ag.ch
- Valid from
- Aug 8, 2026
- Valid until
- Nov 6, 2026 (88 days remaining)
- Public key
- EC 256-bit
- Serial
- 06E8593449EA357A41EA61EBA4067BEEE5D3
- SHA-256 fingerprint
- 34:60:73:02:3B:24:FB:05:AE:38:4E:88:DF:05:E2:47:DE:46:FB:60:85:78:CD:48:EE:D9:84:04:14:D0:2C:89
- Chain
- YE2 → 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.
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This is today's certificate. Turn on monitoring and we'll watch sk-ag.ch continuously, notifying you the moment anything moves across all three signals:
Uptime
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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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