SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
jjc-net.ac.jp
SSL/TLS Certificate
SSL/TLS Certificate for jjc-net.ac.jp
Valid- Issued by (CA)
- Japan Registry Services Co., Ltd.
- Subject
- www.jjc-net.ac.jp
- Valid from
- Aug 28, 2025
- Valid until
- Aug 31, 2026 (35 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 2F6E0B6A529C84B023856900E80D5D7D
- SHA-256 fingerprint
- 17:FF:EB:56:3F:98:5A:9E:69:FB:4E:DD:55:F5:EB:EC:8B:9D:10:17:55:7E:23:00:79:8E:27:D6:3B:CB:FE:1E
- Chain
- JPRS Domain Validation Authority - G4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by jjc-net.ac.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch jjc-net.ac.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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