SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ir-exfo.com
SSL/TLS Certificate
SSL/TLS Certificate for ir-exfo.com
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- ir-exfo.ir
- Valid from
- May 14, 2026
- Valid until
- Aug 12, 2026 (expired 2 days ago)
- Public key
- RSA 2048-bit
- Serial
- 065836532ED6D3D027263C0C550A776035A6
- SHA-256 fingerprint
- C3:60:60:1B:21:6C:8B:00:D0:2F:D9:71:4D:58:73:41:62:91:CD:64:BC:86:1A:E7:F8:54:E5:8F:EA:8A:D1:1C
- Chain
- R13 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
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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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