SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ypa.or.jp
SSL/TLS Certificate
SSL/TLS Certificate for ypa.or.jp
Valid- Issued by (CA)
- Japan Registry Services Co., Ltd.
- Subject
- ypa.or.jp
- Valid from
- Aug 3, 2026
- Valid until
- Oct 30, 2026 (85 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0A90B6A6A72EDB2DC0C28506F50BFE9E
- SHA-256 fingerprint
- AA:5B:6D:F9:60:2A:61:68:59:9C:3C:C6:A1:53:D3:C5:F0:84:29:AA:AF:84:86:5D:B8:66:56:E8:D1:6D:B8:D4
- Chain
- JPRS DV RSA CA 2024 G1 → SECOM TLS RSA Root CA 2024
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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This is today's certificate. Turn on monitoring and we'll watch ypa.or.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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