SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
cmd-net.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for cmd-net.co.jp
Valid- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.cmd-net.co.jp
- Valid from
- Jul 30, 2026
- Valid until
- Feb 14, 2027 (181 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 5CF68F1F2D296D8CDA19D286
- SHA-256 fingerprint
- DD:52:08:FF:7E:81:2F:B3:ED:70:06:CE:EC:99:3C:8A:5E:00:98:F3:FF:5D:D4:2F:70:25:B7:F7:8A:8B:29:F3
- Chain
- GlobalSign GCC R46 DV TLS CA 2025 → GlobalSign Root R46
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Jul 20, 2026.
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This is today's certificate. Turn on monitoring and we'll watch cmd-net.co.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.
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