SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kenyu-kai.or.jp
SSL/TLS Certificate
SSL/TLS Certificate for kenyu-kai.or.jp
Valid- Issued by (CA)
- DigiCert Inc
- Subject
- kenyu-kai.or.jp
- Valid from
- Oct 4, 2025
- Valid until
- Oct 3, 2026 (55 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0B024FC0EBEB46A7C178632FC872204B
- SHA-256 fingerprint
- FF:37:7C:04:E6:98:B9:F8:5D:38:24:AE:F8:F9:84:E5:B6:4B:FA:05:C7:77:AD:37:1B:E3:31:CC:EC:D3:A7:36
- Chain
- Encryption Everywhere DV TLS CA - G2 → DigiCert Global Root G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by kenyu-kai.or.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch kenyu-kai.or.jp 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.