SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
a-sumica.com
SSL/TLS Certificate
SSL/TLS Certificate for a-sumica.com
Valid- Issued by (CA)
- Japan Registry Services Co., Ltd.
- Subject
- www.a-sumica.com
- Valid from
- Aug 5, 2026
- Valid until
- Nov 2, 2026 (86 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 421B60DF5158462766601A5253F1D2EA
- SHA-256 fingerprint
- 59:24:23:29:CF:5E:48:3C:8D:5E:7A:E4:F7:EC:1B:95:95:FC:8A:E6:22:5E:93:A3:0B:21:48:DF:3F:C4:35:81
- Chain
- JPRS DV RSA CA 2024 G1 → SECOM TLS RSA Root CA 2024
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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DNS changes
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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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