SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
okaya-clinic.com
SSL/TLS Certificate
SSL/TLS Certificate for okaya-clinic.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- okaya-clinic.com
- Valid from
- Jun 26, 2026
- Valid until
- Sep 24, 2026 (51 days remaining)
- Public key
- EC 256-bit
- Serial
- 052AD07B72AE71985093FC22E98E77E63F1E
- SHA-256 fingerprint
- C7:59:DC:96:07:83:23:88:95:55:17:4A:97:76:B5:CE:A1:1E:E8:BB:56:85:22:28:7B:92:42:6D:E4:7B:86:87
- Chain
- YE1 → Root YE → ISRG Root X2 → 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 Jul 28, 2026.
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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, 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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