SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bf-estate.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for bf-estate.co.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.bf-estate.co.jp
- Valid from
- Jun 7, 2026
- Valid until
- Sep 5, 2026 (33 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 069E43869BBC632B10A2F6D6E07225CD7A06
- SHA-256 fingerprint
- 5C:64:C4:38:2E:B3:8D:CF:0E:68:65:93:A9:F2:39:5D:66:12:4C:AA:02:13:AE:4F:8B:88:42:C3:C3:F7:DB:38
- 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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