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 qbt.ch
Valid- Issued by (CA)
- ZeroSSL GmbH
- Subject
- *.qbt.ch
- Valid from
- May 19, 2026
- Valid until
- Dec 3, 2026 (128 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 865DEC02FADD6317B2F9EEF2379A7E9A
- SHA-256 fingerprint
- 49:1E:E5:70:AE:EA:73:78:ED:A9:56:47:4B:96:A2:36:35:E2:F6:E2:3B:31:04:86:C0:D4:6D:40:93:A4:6D:26
- Chain
- ZeroSSL RSA DV SSL CA 2 → Sectigo Public Server Authentication Root R46
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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