DNS
THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.3

hyosung.com · 218.159.115.20:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
C=KR ST=Seoul L=Mapo-gu O=Hyosung Corporation CN=*.hyosung.com
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Valid from
2026-02-20T00:00:00+00:00
Expires
2027-03-21T23:59:59+00:00
Days remaining
164
Serial (hex)
01BF6B0139209538E4A185D81ACECDA4
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.hyosung.com, DNS:*.hyosung.co.kr, DNS:hyosung.co.kr, DNS:hyosung.com

SHA-256 fingerprint

EB:32:DA:D5:EE:F7:BE:F7:EA:46:CE:D1:E1:79:D8:E7:13:4B:E1:61:69:BE:FE:3C:F5:09:0D:33:D2:2A:D9:AF
Certificate extensions & PEM
authorityKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
subjectKeyIdentifier
99:1C:50:3D:62:E9:D8:94:2B:AB:3D:E8:33:46:DB:2F:A4:3D:EC:ED
subjectAltName
DNS:*.hyosung.com, DNS:*.hyosung.co.kr, DNS:hyosung.co.kr, DNS:hyosung.com
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
crlDistributionPoints
Full Name: URI:http://cdp.thawte.com/ThawteTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.thawte.com CA Issuers - URI:http://cacerts.thawte.com/ThawteTLSRSACAG1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F: AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26 Timestamp : Feb 20 01:47:14.640 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:06:4C:75:6D:98:BB:CD:8D:A8:CF:0E:FF: C0:ED:79:83:3F:C4:C3:DB:4E:1B:A1:1A:D9:1F:7E:56: 7E:DB:01:70:02:21:00:B1:C4:BD:E8:41:98:FB:3E:30: C8:CF:5D:23:AC:6E:C3:4A:8D:73:87:E8:A0:7C:5C:A4: 88:1D:76:9B:13:20:2A Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D6:D5:8D:A9:D0:17:53:F3:6A:4A:A0:C7:57:49:02:AF: EB:C7:DC:2C:D3:8C:D9:F7:64:C8:0C:89:19:1E:9F:02 Timestamp : Feb 20 01:47:14.608 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:64:E8:9E:65:72:50:AB:88:A7:7F:94:A9: 27:84:5A:6A:A0:D6:63:49:E7:D9:E4:7C:A7:06:9D:B0: EC:C5:8F:FB:02:21:00:A9:5F:2B:6B:12:66:06:70:73: B2:80:4D:93:CC:CE:B9:4A:00:1B:C1:3F:ED:46:18:0B: EC:17:B7:CA:4F:F2:96 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 44:C2:BD:0C:E9:14:0E:64:A5:C9:4A:01:93:0A:5A:A1: BB:35:97:0E:00:EE:11:16:89:68:2A:1C:44:D7:B5:66 Timestamp : Feb 20 01:47:14.668 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:F3:D0:34:7B:84:7D:3E:5D:0E:D0:EA: FF:51:7A:2C:9E:71:B6:9E:1B:D0:FC:4A:B0:BF:A7:D8: 81:C5:92:39:A7:02:21:00:DB:DF:C5:03:BA:0B:5E:16: D7:34:A1:67:2A:8B:20:1A:A7:F1:57:DF:46:1F:7B:50: E4:6B:94:1C:80:01:BA:A9
-----BEGIN CERTIFICATE-----
MIIGiTCCBXGgAwIBAgIQAb9rATkglTjkoYXYGs7NpDANBgkqhkiG9w0BAQsFADBe
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
d3cuZGlnaWNlcnQuY29tMR0wGwYDVQQDExRUaGF3dGUgVExTIFJTQSBDQSBHMTAe
Fw0yNjAyMjAwMDAwMDBaFw0yNzAzMjEyMzU5NTlaMGUxCzAJBgNVBAYTAktSMQ4w
DAYDVQQIEwVTZW91bDEQMA4GA1UEBxMHTWFwby1ndTEcMBoGA1UEChMTSHlvc3Vu
ZyBDb3Jwb3JhdGlvbjEWMBQGA1UEAwwNKi5oeW9zdW5nLmNvbTCCASIwDQYJKoZI
hvcNAQEBBQADggEPADCCAQoCggEBAK28tkRyveBp+kuYrWhX91Z53516RWjvxnDf
46ysCxMO2ibMUNEJycSDzVq+2m52QOCzXhyE9fJnuP9VVyleQoZJZebuTcZUr1Tc
ZZLVtXFFBqy1Vmj7LwMAHxbQha1AJGX2r4WWkFa8qHme+n0pdx4ovlQWuDhn3Xkw
XfofMWtc0xHjNBqsi7YKMwIN9R+ZmrYy34Mjli+dlzoVOxqePQXzBKVG7cpMpLrO
YOdYAyX0DonyC0W3P4qj3eqUdkIEEkFlG5Fe4dhHdaEZrJDSOtu6m1N7F0R+YeX9
wgMNlSJwC99VxUI6ZnWBpOYbcnuAcAHyQgRkHs1QBL2AMLTlxisCAwEAAaOCAzow
ggM2MB8GA1UdIwQYMBaAFKWM/jLM6w8s1BnGCLgAJIhdw8W3MB0GA1UdDgQWBBSZ
HFA9YunYlCurPegzRtsvpD3s7TBFBgNVHREEPjA8gg0qLmh5b3N1bmcuY29tgg8q
Lmh5b3N1bmcuY28ua3KCDWh5b3N1bmcuY28ua3KCC2h5b3N1bmcuY29tMD4GA1Ud
IAQ3MDUwMwYGZ4EMAQICMCkwJwYIKwYBBQUHAgEWG2h0dHA6Ly93d3cuZGlnaWNl
cnQuY29tL0NQUzAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEG
CCsGAQUFBwMCMDsGA1UdHwQ0MDIwMKAuoCyGKmh0dHA6Ly9jZHAudGhhd3RlLmNv
bS9UaGF3dGVUTFNSU0FDQUcxLmNybDBwBggrBgEFBQcBAQRkMGIwJAYIKwYBBQUH
MAGGGGh0dHA6Ly9zdGF0dXMudGhhd3RlLmNvbTA6BggrBgEFBQcwAoYuaHR0cDov
L2NhY2VydHMudGhhd3RlLmNvbS9UaGF3dGVUTFNSU0FDQUcxLmNydDAMBgNVHRMB
Af8EAjAAMIIBfwYKKwYBBAHWeQIEAgSCAW8EggFrAWkAdgBMY9yY5Zwdq4j2Hoo9
3q6Pq0SjN3tfm5TD+6Gc/MG+JgAAAZx4us9QAAAEAwBHMEUCIAZMdW2Yu82NqM8O
/8DteYM/xMPbThuhGtkfflZ+2wFwAiEAscS96EGY+z4wyM9dI6xuw0qNc4fooHxc
pIgddpsTICoAdgDW1Y2p0BdT82pKoMdXSQKv68fcLNOM2fdkyAyJGR6fAgAAAZx4
us8wAAAEAwBHMEUCIGTonmVyUKuIp3+UqSeEWmqg1mNJ59nkfKcGnbDsxY/7AiEA
qV8raxJmBnBzsoBNk8zOuUoAG8E/7UYYC+wXt8pP8pYAdwBEwr0M6RQOZKXJSgGT
ClqhuzWXDgDuERaJaCocRNe1ZgAAAZx4us9sAAAEAwBIMEYCIQDz0DR7hH0+XQ7Q
6v9ReiyecbaeG9D8SrC/p9iBxZI5pwIhANvfxQO6C14W1zShZyqLIBqn8VffRh97
UORrlByAAbqpMA0GCSqGSIb3DQEBCwUAA4IBAQCrhhmwHyevtkzPGE0VBDVTstbt
upvDOMq0SXjDPkNZQbZMKuTZEo8pYxUNXjLXR3uvXrY3nRG+UTFjzs3Nw8tYF3VA
W3HlQI5F3ix+M4nTPwWVUXsk5iPaXJs+aUny8xOaJpOW3VckKXIaJB6nCmMmr7oR
nax+jJmncQMY0PbHjwFBxHt3n7JGhZ1UUYwroVCs7Is9+fZe2hlzPo3F4IgL+Xaq
cjhuc10qup7qf7OixElG2ilw7qMykgyuckTHlnUj+tgxmV+BbhZm8yygsf1gTr1b
8YWOBClh9+A/JPtt8NyKcDtXDhg42ed9Ot37JGfYtafuSEu7g/XcMwa0g/I9
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-08T00:48:59+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2017-11-02T12:24:25+00:00
Expires
2027-11-02T12:24:25+00:00
Days remaining
390
Serial (hex)
090EE8C5DE5BFA62D2AE2FF7097C4857
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

4B:CC:5E:23:4F:E8:1E:DE:4E:AF:88:3A:A1:9C:31:33:5B:0B:26:E8:5E:06:6B:99:45:E4:CB:61:53:EB:20:C2
Certificate extensions & PEM
subjectKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.digicert.com/CPS
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

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