SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kappa-create.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for kappa-create.co.jp
Valid- Issued by (CA)
- Amazon
- Subject
- kappa-create.co.jp
- Valid from
- Sep 12, 2025
- Valid until
- Oct 11, 2026 (78 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0D270AEBA8E78A9BEAF23A8D6945DA7A
- SHA-256 fingerprint
- 3E:6B:A3:64:D9:23:94:07:6D:45:82:D7:EE:82:C1:4D:8F:05:75:50:2F:04:EB:88:5A:F2:85:F7:C2:64:AB:14
- Chain
- Amazon RSA 2048 M01 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
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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