SSL/TLS Certificate Lookup

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

SSL/TLS Certificate for mattduran.dev

Valid
Issued by (CA)
Amazon
Subject
mattduran.dev
Valid from
Sep 29, 2026
Valid until
Apr 14, 2027 (178 days remaining)
Public key
RSA 2048-bit
Serial
0D027C964B34D74F8CDE73CE849029A4
SHA-256 fingerprint
7E:83:53:E5:57:6D:F0:A6:79:62:0D:26:B6:30:3D:30:43:06:1B:0F:B3:6D:B3:2F:DC:72:3A:FA:5E:FC:72:7C
Chain
Amazon RSA 2048 M01 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Subject Alternative Names (8)
cumbrero.com, lampmile.com, mattduran.dev, summitwindow.app, www.cumbrero.com, www.lampmile.com, www.mattduran.dev, www.summitwindow.app

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

We've observed 1 previous certificate for this host. This certificate has been served since Sep 29, 2026.

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Uptime

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TLS certificate

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