SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
okawa-clinic.jp
SSL/TLS Certificate
SSL/TLS Certificate for okawa-clinic.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- okawa-clinic.jp
- Valid from
- Jun 14, 2026
- Valid until
- Sep 12, 2026 (37 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05FF78CFEBD617AE867964C64684E08006E0
- SHA-256 fingerprint
- 22:86:99:B4:D5:01:A1:23:F8:89:37:7D:BB:08:55:C9:3B:39:21:7E:D8:56:A1:85:3C:B9:33:D6:FA:67:1C:1C
- 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.
Never get surprised by okawa-clinic.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch okawa-clinic.jp continuously, notifying you the moment anything moves across all three signals:
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, 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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