SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sg-management.jp
SSL/TLS Certificate
SSL/TLS Certificate for sg-management.jp
Valid- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.sg-management.jp
- Valid from
- Dec 26, 2025
- Valid until
- Dec 26, 2026 (111 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 01293435125D270477B67361F7FF5559
- SHA-256 fingerprint
- D6:AE:E6:91:F6:1E:05:D9:B9:BA:BB:4D:2D:BD:78:17:1F:96:50:3E:4F:F8:6A:F8:CE:67:45:4B:A7:45:71:1F
- Chain
- GlobalSign Atlas R3 AlphaSSL CA 2025 Q4 → GlobalSign
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 Aug 15, 2026.
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This is today's certificate. Turn on monitoring and we'll watch sg-management.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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