SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
3d-sign.ch
SSL/TLS Certificate
SSL/TLS Certificate for 3d-sign.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- 3d-sign.ch
- Valid from
- Jul 19, 2026
- Valid until
- Oct 17, 2026 (40 days remaining)
- Public key
- EC 256-bit
- Serial
- 051C87DFE47F5A5FD1EE3642B9061D0A343B
- SHA-256 fingerprint
- 14:69:C0:86:C9:78:0D:73:02:F4:DB:89:B1:7D:1E:5C:7D:0E:2D:80:A1:CA:0E:A5:94:61:25:F5:7B:3C:7B:A7
- Chain
- YE1 → 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.
This certificate has been served since Sep 2, 2026.
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This is today's certificate. Turn on monitoring and we'll watch 3d-sign.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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