SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
123-structure.com
SSL/TLS Certificate
SSL/TLS Certificate for 123-structure.com
Expired- Issued by (CA)
- Gandi
- Subject
- 123-structure.com
- Valid from
- Oct 10, 2024
- Valid until
- Nov 9, 2025 (expired 323 days ago)
- Public key
- EC 256-bit
- Serial
- 4721420635943A48F69462A3B800A871
- SHA-256 fingerprint
- F5:21:66:7B:92:8C:53:46:36:2A:72:F3:6F:30:28:E0:31:02:B4:7D:B6:84:C2:22:3A:A9:80:1D:A8:C2:E6:6F
- Chain
- Gandi RSA Domain Validation Secure Server CA 3 → USERTrust RSA Certification Authority
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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