SSL/TLS Certificate Lookup

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

johnson.org

SSL/TLS Certificate

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SSL/TLS Certificate for johnson.org

Expired
Issued by (CA)
Let's Encrypt
Subject
realnames.com
Valid from
Dec 10, 2025
Valid until
Mar 10, 2026 (expired 132 days ago)
Public key
RSA 2048-bit
Serial
054B418E06A27739E818A9BEDDC38AC09DA7
SHA-256 fingerprint
D0:FC:2D:E3:79:CE:65:DF:7F:40:74:AA:78:C1:D6:30:62:55:BE:A5:C1:B4:AB:D6:4A:91:15:9C:D3:7A:E5:8B
Chain
R12 → ISRG Root X1
Subject Alternative Names (2)
realnames.com, www.realnames.com

Certificate Authority Authorization (CAA)

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