SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
y-aa.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for y-aa.co.jp
Valid- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.y-aa.co.jp
- Valid from
- Oct 24, 2026
- Valid until
- May 11, 2027 (182 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 4574094A0ABFA325FF536316
- SHA-256 fingerprint
- FD:FC:AB:70:5C:67:4F:8B:2C:2E:6C:1C:1F:44:7C:17:10:51:0A:2A:0C:CD:40:40:71:7B:9E:AD:A5:4B:D2:64
- Chain
- GlobalSign GCC R46 AlphaSSL CA 2025 → GlobalSign Root R46 → GlobalSign
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by y-aa.co.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch y-aa.co.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.
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