SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
r-plus-cafe.jp
SSL/TLS Certificate
SSL/TLS Certificate for r-plus-cafe.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- r-plus-cafe.jp
- Valid from
- Sep 27, 2026
- Valid until
- Dec 26, 2026 (65 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0673A64C746EB105C7EC28704E9C221D37C2
- SHA-256 fingerprint
- C2:D7:A4:62:59:44:80:B7:6B:CB:14:99:E7:99:D4:C2:1E:B7:36:99:86:D5:CD:0D:8A:0F:63:50:67:21:5F:F3
- 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 Oct 12, 2026.
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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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