SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
azabu-k.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for azabu-k.co.jp
Valid- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.azabu-k.co.jp
- Valid from
- Oct 27, 2025
- Valid until
- Nov 28, 2026 (119 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 1B6B9729D2F51043278475BB
- SHA-256 fingerprint
- C4:C6:AE:F0:C4:DE:03:F5:5A:84:E7:C6:D2:0E:2B:4F:3C:BF:20:C0:53:F8:DB:F3:34:BB:B6:7E:32:4F:B0:AE
- Chain
- GlobalSign GCC R6 AlphaSSL CA 2025 → GlobalSign
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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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.
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