SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
teikyo-kani.ed.jp
SSL/TLS Certificate
SSL/TLS Certificate for teikyo-kani.ed.jp
Valid- Issued by (CA)
- Nijimo, Inc.
- Subject
- teikyo-kani.ed.jp
- Valid from
- Oct 27, 2026
- Valid until
- Jan 25, 2027 (81 days remaining)
- Public key
- RSA 2048-bit
- Serial
- AF7AD09D2282D6A517D8F4915AA956CD
- SHA-256 fingerprint
- 88:4A:45:21:C1:97:91:51:FC:72:91:AE:4C:F9:81:66:B2:CD:4E:F7:DD:52:4E:EF:D8:73:7B:B2:31:91:D6:5D
- Chain
- FujiSSL RSA Domain Validation Secure Server CA 2 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
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 Nov 2, 2026.
Never get surprised by teikyo-kani.ed.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch teikyo-kani.ed.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, CNAME, TXT 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.