SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kagaku.com
SSL/TLS Certificate
SSL/TLS Certificate for kagaku.com
Hostname mismatch- Issued by (CA)
- Cybertrust Japan Co., Ltd.
- Subject
- www.kagaku.com
- Valid from
- Jan 9, 2026
- Valid until
- Jan 31, 2027 (126 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 50953D3F51C7B6D0BE4F9DB61A900FCA564DD9EE
- SHA-256 fingerprint
- CA:8F:BB:9E:79:68:22:1F:89:B5:6E:68:F9:91:05:61:12:01:FE:E0:48:A1:4B:6F:A9:50:52:1F:15:53:63:BB
- Chain
- Cybertrust Japan SureServer CA G4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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This is today's certificate. Turn on monitoring and we'll watch kagaku.com continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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