SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
j-connection.jp
SSL/TLS Certificate
SSL/TLS Certificate for j-connection.jp
Valid- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.j-connection.jp
- Valid from
- Aug 26, 2026
- Valid until
- Oct 3, 2026 (23 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 4DA018B423AFD8DA8D92A2A0
- SHA-256 fingerprint
- 6D:FB:9E:F2:D3:EE:E9:BE:61:9E:B5:82:2B:1F:4A:23:46:F4:A9:CC:1A:77:8A:6E:AA:61:FD:8A:BA:ED:24:2E
- Chain
- GlobalSign GCC R46 AlphaSSL CA 2025 → GlobalSign Root R46 → 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 Sep 1, 2026.
Never get surprised by j-connection.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch j-connection.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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