SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sakai-ah.jp
SSL/TLS Certificate
SSL/TLS Certificate for sakai-ah.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sakai-ah.jp
- Valid from
- Oct 8, 2026
- Valid until
- Jan 6, 2027 (51 days remaining)
- Public key
- EC 256-bit
- Serial
- 05CD003D43725417715982DBC8662AAAE197
- SHA-256 fingerprint
- 73:89:99:57:83:B9:DE:F2:E6:5A:C7:54:22:40:5F:CA:FA:49:89:40:0B:F5:00:4D:92:B3:8A:14:CE:E6:6B:6C
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 3 previous certificates for this host. This certificate has been served since Oct 22, 2026.
Never get surprised by sakai-ah.jp's certificate expiring
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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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