SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kinzei-seifukai.com
SSL/TLS Certificate
SSL/TLS Certificate for kinzei-seifukai.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- kinzei-seifukai.com
- Valid from
- Oct 8, 2026
- Valid until
- Jan 6, 2027 (53 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05E5C916C233EECA019E0E032B0DE7E3AF60
- SHA-256 fingerprint
- C3:CA:4D:89:AD:2B:62:07:7C:E5:78:47:90:9A:FD:DA:D4:46:12:D6:FE:C2:F1:79:B9:CF:15:C5:33:93:ED:4D
- 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.
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Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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