SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ikebukuro.or.jp
SSL/TLS Certificate
SSL/TLS Certificate for ikebukuro.or.jp
Self-signed- Issued by (CA)
- Fortinet
- Subject
- *.ikebukuro.or.jp
- Valid from
- Nov 14, 2025
- Valid until
- Dec 15, 2026 (128 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 6A7BBA6EBA76E45C4C26D231C1C88A5D089F9F08
- SHA-256 fingerprint
- 4D:85:70:36:11:75:A8:77:DD:41:8C:DF:BC:3B:9F:AD:1C:29:3E:0B:AF:81:BE:64:FA:B2:5A:6E:86:A1:1D:C5
- Chain
- FGT80FTK21025110
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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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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