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 nergi.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- nergi.ch
- Valid from
- Sep 2, 2026
- Valid until
- Dec 1, 2026 (68 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06ADCAB28D3E8F1A9470298DF87BB711F2A0
- SHA-256 fingerprint
- 15:B8:BD:D4:22:64:15:73:34:F2:AA:5A:68:D8:A9:48:3B:BC:0C:C6:42:79:0C:FD:75:0F:47:A0:96:B7:A2:CE
- 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.
This certificate has been served since Jul 25, 2026.
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This is today's certificate. Turn on monitoring and we'll watch nergi.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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