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 ohsungec.com

Valid
Issued by (CA)
Let's Encrypt
Subject
ohsungec.com
Valid from
Jul 10, 2026
Valid until
Oct 8, 2026 (25 days remaining)
Public key
RSA 3072-bit
Serial
051DCDD71CF5419971F5EE7491FB6EF773B6
SHA-256 fingerprint
A2:B8:BA:9C:08:19:E3:60:C9:12:02:B0:86:D3:C2:A8:3B:58:32:AC:59:D8:61:16:C2:79:B8:C8:1D:1C:25:41
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (4)
ohsungec.co.kr, ohsungec.com, www.ohsungec.co.kr, www.ohsungec.com

Certificate Authority Authorization (CAA)

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

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Uptime

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DNS changes

We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.

TLS certificate

We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.

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