SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bs-architekten.ch
SSL/TLS Certificate
SSL/TLS Certificate for bs-architekten.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- bs-architekten.ch
- Valid from
- Oct 8, 2026
- Valid until
- Jan 6, 2027 (51 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05CA9CF7C03CFC96C84FCBFBE4136698E0FB
- SHA-256 fingerprint
- BE:CF:41:37:60:15:C3:2C:55:9D:F6:0F:EA:7A:C4:9B:AF:53:1C:4C:4A:E9:7E:11:0D:F9:AE:1D:BF:7C:95:38
- 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, CNAME, TXT 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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