SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
shu-katsu.jp
SSL/TLS Certificate
SSL/TLS Certificate for shu-katsu.jp
Hostname mismatch- Issued by (CA)
- Sectigo Limited
- Subject
- www.minim.jp
- Valid from
- Feb 10, 2026
- Valid until
- Mar 13, 2027 (210 days remaining)
- Public key
- RSA 2048-bit
- Serial
- BA4146FEE140A4A2DEAD0024A5CE54C8
- SHA-256 fingerprint
- 5E:72:08:00:88:23:7C:A1:13:8E:B2:1C:60:A7:AC:66:5B:DB:C0:50:19:7E:64:5E:02:78:7B:E4:E2:9A:33:EC
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority → AAA Certificate Services
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
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
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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