SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
furano-kango.ac.jp
SSL/TLS Certificate
SSL/TLS Certificate for furano-kango.ac.jp
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- www.furano-kango.ac.jp
- Valid from
- Oct 7, 2026
- Valid until
- Jan 5, 2027 (61 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0514E8190ABAFB84825B4146EBD11AAFDFB4
- SHA-256 fingerprint
- EB:A3:84:92:24:6E:8F:19:C0:78:31:50:9B:86:26:75:6E:48:AC:91:91:DC:CB:D5:5B:7F:C5:FA:F9:17:A8:59
- Chain
- YR1 → Root YR → ISRG Root X1
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
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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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