SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
y-kenki.jp
SSL/TLS Certificate
SSL/TLS Certificate for y-kenki.jp
Valid- Issued by (CA)
- Japan Registry Services Co., Ltd.
- Subject
- y-kenki.jp
- Valid from
- Dec 8, 2025
- Valid until
- Dec 31, 2026 (92 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 57BC15B4AAEF9432149EA03642D7AFDC
- SHA-256 fingerprint
- 7B:BA:A0:C1:E2:0F:44:09:53:A5:DC:17:5C:C7:AE:21:CA:8C:14:6B:50:C3:84:EB:1F:BF:AB:FE:8B:B2:63:39
- 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.
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This is today's certificate. Turn on monitoring and we'll watch y-kenki.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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