SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

claustro.net

SSL/TLS Certificate

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SSL/TLS Certificate for claustro.net

Valid

Issued by (CA): Sectigo Limited
Subject: claustro.net
Valid from: Jun 20, 2026
Valid until: Jan 4, 2027 (168 days remaining)
Public key: RSA 4096-bit
Serial: 09C427C8665436B5E647F7CC53059F20
SHA-256 fingerprint: 21:F1:C3:63:32:60:8D:69:DB:97:05:DE:F0:17:00:A8:BD:63:F0:34:3B:A0:1A:5E:D8:B6:58:3E:89:9B:AA:E9
Chain: Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority

Subject Alternative Names (2)

claustro.net, www.claustro.net

Certificate Authority Authorization (CAA)

The serving CA (Sectigo Limited) is not among the authorities this domain's CAA records authorize (comodoca.com). This can indicate a misconfiguration or an unexpected issuance.