SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
scigineer.net
SSL/TLS Certificate
SSL/TLS Certificate for scigineer.net
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- scigineer.net
- Valid from
- Feb 24, 2025
- Valid until
- May 25, 2025 (expired 487 days ago)
- Public key
- RSA 4096-bit
- Serial
- 04D1C5819736FEC00EA96D40297434338152
- SHA-256 fingerprint
- 45:01:8E:8E:6E:B0:9A:CA:D4:CA:74:77:57:1F:F0:18:1A:C4:EB:46:33:EC:68:2F:28:24:07:B8:25:91:0E:A0
- Chain
- R10 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org, trust-provider.com).
This certificate has been served since Sep 21, 2026.
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Uptime
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DNS changes
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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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