SSL/TLS Certificate Lookup

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

jusc.or.kr

SSL/TLS Certificate

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SSL/TLS Certificate for jusc.or.kr

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
100.webis.kr
Valid from
Jun 23, 2026
Valid until
Sep 21, 2026 (62 days remaining)
Public key
RSA 2048-bit
Serial
056C35B6D2C32899F6DFCD986559C30AD070
SHA-256 fingerprint
6A:C8:15:34:02:27:5D:1F:6D:77:BD:6C:02:A0:FD:A3:11:C0:7A:31:1C:F0:A5:40:8A:9F:9D:6C:06:C3:CE:85
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
100.webis.kr, www.100.webis.kr

Certificate Authority Authorization (CAA)

The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).