SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sp-koeniz.ch
SSL/TLS Certificate
SSL/TLS Certificate for sp-koeniz.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sp-koeniz.ch
- Valid from
- Jul 10, 2026
- Valid until
- Oct 8, 2026 (78 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 053509B580F4458D823A21147C9D4848F939
- SHA-256 fingerprint
- 7E:2E:FA:78:78:82:66:39:93:14:3D:51:49:A0:F1:5E:0D:9D:B0:CC:5E:85:45:8F:55:77:80:15:1A:98:1A:9A
- 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.
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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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