SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
otawa-aitoku.jp
SSL/TLS Certificate
SSL/TLS Certificate for otawa-aitoku.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.otawa-aitoku.jp
- Valid from
- Oct 23, 2026
- Valid until
- Jan 21, 2027 (67 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06E47274E18B097A0B7CB6E27AAADFEDED42
- SHA-256 fingerprint
- 1A:9A:73:F4:E1:0B:4E:3A:2C:C5:F8:83:27:8B:C1:FA:74:67:07:2B:06:F8:75:FF:E8:CE:E7:2C:5C:1F:97:08
- Chain
- YR1 → Root YR → 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 1 previous certificate for this host. This certificate has been served since Nov 10, 2026.
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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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