SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ichi-dai.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for ichi-dai.co.jp
Valid- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.ichi-dai.co.jp
- Valid from
- Mar 30, 2026
- Valid until
- Oct 15, 2026 (74 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 01D0E4354BE5DE06FC1C46B3C42E6673
- SHA-256 fingerprint
- 23:9A:A9:84:F2:2C:84:EB:F7:D3:06:46:D1:DE:EF:51:22:53:5D:60:BE:31:BD:63:61:1D:49:12:1E:47:81:16
- Chain
- GlobalSign Atlas R3 AlphaSSL CA 2026 Q1 → 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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