SSL/TLS Certificate Lookup

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duolingo.support

SSL/TLS Certificate

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SSL/TLS Certificate for duolingo.support

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
bot.duolingo.support
Valid from
Jul 11, 2026
Valid until
Oct 9, 2026 (80 days remaining)
Public key
EC 256-bit
Serial
050466C219379BB9B5A745DC1C6453AF8ECD
SHA-256 fingerprint
DC:2B:2F:91:B5:DB:11:03:1D:B0:FC:93:A8:69:F2:9B:04:AB:C2:4D:35:50:D4:21:8E:42:68:0C:A1:D9:E3:B8
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (1)
bot.duolingo.support

Certificate Authority Authorization (CAA)

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