SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kagawa-badminton.jp
SSL/TLS Certificate
SSL/TLS Certificate for kagawa-badminton.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- kagawa-badminton.jp
- Valid from
- Jun 27, 2026
- Valid until
- Sep 25, 2026 (55 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 054E15A09339D21D4469D7AC76F3D00B0C0D
- SHA-256 fingerprint
- 39:07:73:1F:78:30:3A:C8:44:A1:76:07:85:B7:40:63:F2:E2:D6:AD:41:D9:25:12:95:D3:B0:3B:D9:CF:48:26
- Chain
- YR2 → Root YR → ISRG Root X1
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
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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