SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kg-net.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for kg-net.co.jp
Valid- Issued by (CA)
- Cybertrust Japan Co., Ltd.
- Subject
- www.kg-net.co.jp
- Valid from
- Aug 25, 2025
- Valid until
- Sep 14, 2026 (46 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 5594635C2CBF1E35F253E02A6DE31D382E75B597
- SHA-256 fingerprint
- F3:6B:E0:BC:BF:31:1F:15:58:C9:E9:C8:07:95:0A:3A:64:7F:8F:E9:A1:BE:21:49:61:8D:A9:7B:CB:B7:35:A7
- Chain
- Cybertrust Japan SureServer CA G4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by kg-net.co.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch kg-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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