SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
f-counter.com
SSL/TLS Certificate
SSL/TLS Certificate for f-counter.com
Hostname mismatch- Issued by (CA)
- Gehirn Inc.
- Subject
- *.sakura.ne.jp
- Valid from
- May 1, 2026
- Valid until
- Nov 15, 2026 (118 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 7A88F56A4009F66FD9A646FE1CE327F1
- SHA-256 fingerprint
- 20:8B:45:5C:89:E5:E1:D9:7F:00:4E:6D:D4:EE:4C:04:64:10:5E:FD:25:B2:53:F0:22:2B:3E:C2:CD:07:CC:95
- Chain
- Gehirn RSA Domain Validation Secure Server CA 2 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.