SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
hayashi-kenso.com
SSL/TLS Certificate
SSL/TLS Certificate for hayashi-kenso.com
Valid- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.hayashi-kenso.com
- Valid from
- Sep 9, 2026
- Valid until
- Mar 27, 2027 (190 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 014B326619136E54736A1B7EC286031A
- SHA-256 fingerprint
- 53:5B:7F:D3:41:4D:F0:30:FA:1B:D2:01:36:2B:79:F7:3C:69:8D:2E:B5:E6:B6:D3:F1:8A:66:A4:AF:F9:80:B7
- Chain
- GlobalSign Atlas R46 AlphaSSL CA 2026 Q3 → GlobalSign Root R46
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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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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