SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kato-aki.com
SSL/TLS Certificate
SSL/TLS Certificate for kato-aki.com
Valid- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.kato-aki.com
- Valid from
- Sep 12, 2026
- Valid until
- Mar 30, 2027 (148 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 015A3B9CE9EC64BC085A914DDF474A83
- SHA-256 fingerprint
- AC:9C:58:3A:44:72:2F:A5:BE:C8:89:51:52:4B:6C:D3:1A:14:B2:D3:6C:FB:80:F5:BD:BB:B6:B7:56:46:2E:66
- Chain
- GlobalSign Atlas R46 AlphaSSL CA 2026 Q3 → GlobalSign Root R46
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Oct 27, 2026.
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Uptime
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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.
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