SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
life-u.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for life-u.co.jp
Valid- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.life-u.co.jp
- Valid from
- Aug 25, 2026
- Valid until
- Mar 12, 2027 (125 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 018481F7B5444CF03EAFF0C5E9B74CAC
- SHA-256 fingerprint
- 1D:03:29:86:E0:19:A1:21:01:0E:F7:87:CE:45:81:5D:F1:B3:AE:0F:02:2F:8E:CD:10:FD:89:B0:45:08:77:93
- Chain
- GlobalSign Atlas R46 AlphaSSL CA 2026 Q3 → GlobalSign Root R46
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 1, 2026.
Never get surprised by life-u.co.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch life-u.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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