SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ssk-sasaki.jp
SSL/TLS Certificate
SSL/TLS Certificate for ssk-sasaki.jp
Expiring soon- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.ssk-sasaki.jp
- Valid from
- Jul 27, 2026
- Valid until
- Aug 30, 2026 (15 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 25DC324928D894E2C6628D3F
- SHA-256 fingerprint
- 1B:89:8F:0E:7D:D3:09:C4:F2:F7:98:4F:53:EC:1B:5A:62:B2:05:65:0E:5B:08:E2:9B:D0:84:00:70:13:65:4F
- Chain
- GlobalSign GCC R46 AlphaSSL CA 2025 → 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
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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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