SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kaseihin-eng.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for kaseihin-eng.co.jp
Expiring soon- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.kaseihin-eng.co.jp
- Valid from
- May 13, 2026
- Valid until
- Nov 28, 2026 (14 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 6B37930795548E928A1A2400
- SHA-256 fingerprint
- 4A:52:37:8F:91:46:16:6F:88:AC:10:C5:BA:1C:E4:0A:5B:6C:A7:D4:D7:AA:DE:29:E8:FF:32:5E:A3:51:13:DE
- Chain
- GlobalSign RSA OV SSL CA 2018 → GlobalSign
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 12, 2026.
Never get surprised by kaseihin-eng.co.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch kaseihin-eng.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.