SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ars-edu.ru
SSL/TLS Certificate
SSL/TLS Certificate for ars-edu.ru
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- 3.mnemozina.ru
- Valid from
- Apr 7, 2025
- Valid until
- Jul 6, 2025 (expired 469 days ago)
- Public key
- RSA 3072-bit
- Serial
- 06CC17CBC093F88B3A79118C2D0EAF13DBF4
- SHA-256 fingerprint
- 9E:50:A1:53:0C:E2:44:A0:38:F2:BB:3B:F4:C3:40:B3:A4:E2:EA:EA:FA:2E:80:10:39:1A:50:62:C6:7A:79:78
- Chain
- R11 → 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 Oct 9, 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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