SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
keiyaku-watch.jp
SSL/TLS Certificate
SSL/TLS Certificate for keiyaku-watch.jp
Valid- Issued by (CA)
- Amazon
- Subject
- keiyaku-watch.jp
- Valid from
- Jul 28, 2026
- Valid until
- Feb 10, 2027 (95 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0B5DB487573ED6FE9B738DC3912506C2
- SHA-256 fingerprint
- 87:D2:E2:C9:83:C7:07:71:30:9E:41:CB:29:9A:35:52:5D:DD:B6:F5:46:62:62:F4:8E:BC:93:08:4F:4F:B1:E7
- 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, CNAME, TXT 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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