SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for kenyu-kikaku.co.jp

Valid
Issued by (CA)
GlobalSign nv-sa
Subject
www.kenyu-kikaku.co.jp
Valid from
Feb 17, 2026
Valid until
Mar 21, 2027 (237 days remaining)
Public key
RSA 2048-bit
Serial
1CECB82E87A5EE1CD356AE27
SHA-256 fingerprint
5F:E3:ED:37:99:4E:50:20:05:A4:E3:15:EF:9A:37:DC:95:46:86:46:59:68:77:32:E8:A8:39:59:C1:DB:1D:20
Chain
GlobalSign GCC R3 DV TLS CA 2020 → GlobalSign
Subject Alternative Names (2)
kenyu-kikaku.co.jp, www.kenyu-kikaku.co.jp

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

Never get surprised by kenyu-kikaku.co.jp's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch kenyu-kikaku.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, 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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.