SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
busnet-gunma.jp
SSL/TLS Certificate
SSL/TLS Certificate for busnet-gunma.jp
Hostname mismatch- Issued by (CA)
- GlobalSign nv-sa
- Subject
- default.ssl.fastly.net
- Valid from
- Feb 9, 2026
- Valid until
- Mar 13, 2027 (214 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 3D353FEDE2EFC92FC1E40A86
- SHA-256 fingerprint
- CD:6E:83:8B:9B:FE:31:CA:B8:B3:D5:C8:58:B0:D6:22:3F:E8:4E:CE:23:6C:1F:DB:28:1B:E9:3C:30:2E:1E:6E
- 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 busnet-gunma.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch busnet-gunma.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.