SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gakken-meds.jp
SSL/TLS Certificate
SSL/TLS Certificate for gakken-meds.jp
Valid- Issued by (CA)
- GlobalSign nv-sa
- Subject
- *.gakken-meds.jp
- Valid from
- Jun 23, 2026
- Valid until
- Jan 8, 2027 (62 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 1BF3CAC4C4030A6257B7ADBF
- SHA-256 fingerprint
- 94:C3:6C:0C:16:AB:03:BB:E9:31:BE:A7:1B:22:5A:74:00:D5:3E:50:1C:69:16:7D:3D:A3:3D:1E:D7:0C:4A:81
- 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.
Never get surprised by gakken-meds.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch gakken-meds.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.