SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
okaydiagnostic.com
SSL/TLS Certificate
SSL/TLS Certificate for okaydiagnostic.com
Expired- Issued by (CA)
- Sectigo Limited
- Subject
- okaydiagnostic.com
- Valid from
- Mar 28, 2025
- Valid until
- Mar 28, 2026 (expired 134 days ago)
- Public key
- RSA 2048-bit
- Serial
- 089AE6EDA1DF0AAFE71EB4B0A8E94964
- SHA-256 fingerprint
- FF:DB:B7:48:AB:25:D3:FC:E6:06:41:3D:90:2A:54:F3:9F:CF:82:4F:29:34:E8:9F:99:40:2F:01:4D:87:43:66
- Chain
- Sectigo RSA Domain Validation Secure Server CA → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
The serving CA (Sectigo Limited) is authorized by this domain's CAA records (globalsign.com, letsencrypt.org, pki.goog, sectigo.com).
This certificate has been served since Jul 21, 2026.
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Uptime
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DNS changes
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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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