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 gtnet-gunma.jp

Hostname mismatch
Issued by (CA)
GlobalSign nv-sa
Subject
www.gtnet.co.jp
Valid from
Dec 15, 2025
Valid until
Jan 16, 2027 (169 days remaining)
Public key
RSA 2048-bit
Serial
63FDB49896A6FE79E3CBDFC9
SHA-256 fingerprint
D4:60:E3:2E:D2:C3:D9:68:67:F8:DD:DB:69:8F:9C:9A:E3:75:34:80:24:95:D3:E2:8F:29:57:6B:37:E3:07:88
Chain
GlobalSign RSA OV SSL CA 2018 → GlobalSign
Subject Alternative Names (5)
gtnet.co.jp, www.c-west.co.jp, www.gtnet-kaitori.com, www.gtnet-syaken.com, www.gtnet.co.jp

Certificate Authority Authorization (CAA)

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TLS certificate

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