SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
h-clinic.or.jp
SSL/TLS Certificate
SSL/TLS Certificate for h-clinic.or.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- h-clinic.or.jp
- Valid from
- Oct 23, 2026
- Valid until
- Jan 21, 2027 (75 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 053A133BD2AD08EB77C17341ABA3C1FEAAF3
- SHA-256 fingerprint
- 64:B8:C8:A8:61:C8:24:94:DE:BD:22:EA:D2:0B:FB:21:1E:AA:9C:46:AF:B7:36:9B:47:7A:6C:2C:F7:75:D4:9D
- 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.
This certificate has been served since Sep 21, 2026.
Never get surprised by h-clinic.or.jp's certificate expiring
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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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