SSL/TLS Certificate Lookup

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

xn--ob0boa6wx4r679bx1b5d.xn--3e0b707e

SSL/TLS Certificate

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SSL/TLS Certificate for xn--ob0boa6wx4r679bx1b5d.xn--3e0b707e

Hostname mismatch
Issued by (CA)
DigiCert Inc
Subject
*.postech.ac.kr
Valid from
Jun 12, 2026
Valid until
Dec 27, 2026 (160 days remaining)
Public key
RSA 2048-bit
Serial
023A51BCA99A8AEB19CAA87E15B0DECC
SHA-256 fingerprint
DB:21:AD:2C:A8:56:86:64:59:57:AB:A4:94:C1:1B:34:8A:AD:09:53:14:DF:EA:16:A2:06:F6:3C:56:FF:97:5C
Chain
Thawte TLS RSA CA G1 → DigiCert Global Root G2
Subject Alternative Names (2)
*.postech.ac.kr, postech.ac.kr

Certificate Authority Authorization (CAA)

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