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

mg.office.openfind.com.tw · 203.69.82.113:443

Verified

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

Subject
C=TW L=TAIPEI O=Openfind Information Technology, Inc. CN=*.office.openfind.com.tw
Issuer
C=PL O=Asseco Data Systems S.A. CN=Certum OV TLS G2 R39 CA
Valid from
2026-09-11T06:08:52+00:00
Expires
2027-01-08T02:51:34+00:00
Days remaining
60
Serial (hex)
4CA889846D8CBF7D8833C91E7B616FC1
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.office.openfind.com.tw, DNS:office.openfind.com.tw

SHA-256 fingerprint

7B:00:13:07:BC:CD:D5:41:CF:BB:62:1D:38:F2:FC:24:7A:0A:4F:03:28:AF:0C:62:F1:91:3A:A9:F6:02:E0:83
Certificate extensions & PEM
basicConstraints
CA:FALSE
crlDistributionPoints
Full Name: URI:http://certumovtlsg2r39ca.crl.certum.pl/certumovtlsg2r39ca.crl
authorityInfoAccess
OCSP - URI:http://certumovtlsg2r39ca.ocsp-certum.com CA Issuers - URI:http://certumovtlsg2r39ca.repository.certum.pl/certumovtlsg2r39ca.cer
authorityKeyIdentifier
E8:79:07:6D:8D:83:FB:9A:79:63:63:BC:A5:32:63:B3:05:41:72:A9
certificatePolicies
Policy: 2.23.140.1.2.2 Policy: 1.2.616.1.113527.2.101.2
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
keyUsage
Digital Signature, Key Encipherment
subjectAltName
DNS:*.office.openfind.com.tw, DNS:office.openfind.com.tw
ct_precert_scts
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 : Sep 11 06:08:52.963 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:F1:C9:9D:92:C4:4E:3D:59:91:9B:B8: 12:48:8B:D1:58:61:F4:62:43:32:17:92:EE:E5:1E:94: 76:1E:DD:29:06:02:21:00:D8:6D:38:A2:DA:5E:30:1B: FB:0C:BF:BB:53:DF:DE:2C:E4:92:CD:C5:A8:FF:4A:0B: 98:66:F1:ED:13:C0:26:7E Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Sep 11 06:08:53.168 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:55:46:AD:D8:2F:C1:CE:C4:CE:42:D3:54: F0:B5:38:3C:D2:D9:F8:9A:EE:D7:76:A5:A2:EE:84:DD: 12:A3:D1:81:02:21:00:E5:EC:72:C0:A9:DA:3C:8D:C1: 57:09:9C:3E:F8:BB:F0:D2:18:10:6E:9C:D4:A8:6F:F4: FE:8B:31:92:EB:A9:CD 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 : Sep 11 06:08:53.576 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:E3:F1:12:5B:EC:56:69:DE:FF:44:F4: 0F:3C:67:EB:20:1B:BF:52:B8:07:14:6E:10:E4:3E:C1: 0F:B3:95:38:0C:02:21:00:E5:14:23:3A:9B:EC:4F:E5: A9:24:4E:99:56:2C:3A:B0:23:21:AA:33:70:2E:86:11: 6E:6E:4A:48:86:C8:6C:72
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-11-08T03:07:41+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=PL O=Asseco Data Systems S.A. CN=Certum OV TLS G2 R39 CA
Issuer
C=PL O=Asseco Data Systems S.A. OU=Certum Certification Authority CN=Certum Trusted Root CA
Valid from
2024-06-18T07:43:39+00:00
Expires
2039-06-05T07:43:39+00:00
Days remaining
4592
Serial (hex)
2F7B22589A0DFCE2307C2CD6410DA5D1
Signature
RSA-SHA512
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

F5:4C:E2:1E:A0:F7:95:48:F1:20:1A:61:90:49:CA:15:F0:65:E4:9A:69:F2:6F:B9:CF:12:82:C7:EE:CF:9C:4C
Certificate extensions & PEM
authorityInfoAccess
CA Issuers - URI:http://subca.repository.certum.pl/ctrca.cer OCSP - URI:http://subca.ocsp-certum.com
authorityKeyIdentifier
8C:FB:1C:75:BC:02:D3:9F:4E:2E:48:D9:F9:60:54:AA:C4:B3:4F:FA
basicConstraints
CA:TRUE, pathlen:0
crlDistributionPoints
Full Name: URI:http://subca.crl.certum.pl/ctrca.crl
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
keyUsage
Certificate Sign, CRL Sign
certificatePolicies
Policy: X509v3 Any Policy
subjectKeyIdentifier
E8:79:07:6D:8D:83:FB:9A:79:63:63:BC:A5:32:63:B3:05:41:72:A9
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=PL O=Asseco Data Systems S.A. OU=Certum Certification Authority CN=Certum Trusted Root CA
Issuer
C=PL O=Unizeto Technologies S.A. OU=Certum Certification Authority CN=Certum Trusted Network CA
Valid from
2023-09-19T10:00:00+00:00
Expires
2028-09-19T10:00:00+00:00
Days remaining
681
Serial (hex)
D8E0744B5824919FBD08847DF72020FA
Signature
RSA-SHA512
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

FB:13:89:0C:7A:B1:4F:F7:B9:4B:27:14:50:3E:31:12:3B:FD:D3:40:FC:4D:97:97:43:16:6E:04:69:B4:7A:88
Certificate extensions & PEM
basicConstraints
CA:TRUE
subjectKeyIdentifier
8C:FB:1C:75:BC:02:D3:9F:4E:2E:48:D9:F9:60:54:AA:C4:B3:4F:FA
authorityKeyIdentifier
08:76:CD:CB:07:FF:24:F6:C5:CD:ED:BB:90:BC:E2:84:37:46:75:F7
keyUsage
Certificate Sign, CRL Sign
crlDistributionPoints
Full Name: URI:http://crl.certum.pl/ctnca.crl
authorityInfoAccess
OCSP - URI:http://subca.ocsp-certum.com CA Issuers - URI:http://repository.certum.pl/ctnca.cer
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.certum.pl/CPS
-----BEGIN CERTIFICATE-----
MIIFxDCCBKygAwIBAgIRANjgdEtYJJGfvQiEffcgIPowDQYJKoZIhvcNAQENBQAw
fjELMAkGA1UEBhMCUEwxIjAgBgNVBAoTGVVuaXpldG8gVGVjaG5vbG9naWVzIFMu
QS4xJzAlBgNVBAsTHkNlcnR1bSBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0eTEiMCAG
A1UEAxMZQ2VydHVtIFRydXN0ZWQgTmV0d29yayBDQTAeFw0yMzA5MTkxMDAwMDBa
Fw0yODA5MTkxMDAwMDBaMHoxCzAJBgNVBAYTAlBMMSEwHwYDVQQKExhBc3NlY28g
RGF0YSBTeXN0ZW1zIFMuQS4xJzAlBgNVBAsTHkNlcnR1bSBDZXJ0aWZpY2F0aW9u
IEF1dGhvcml0eTEfMB0GA1UEAxMWQ2VydHVtIFRydXN0ZWQgUm9vdCBDQTCCAiIw
DQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBANEtjru3NuptN5GfTpOnBeQpAyXO
HIL3fJmfQQbN7aO6wNsJLMF83yl+S2Uvk6fUAWsDKBij2J0FwSrYRfGR3t870IAC
jM84D+qnXHgRpMHIhVwl09Oy5yXPEVSXqzXAHnYc7wBTnzncFKUsIiWzcnL8jbPl
PggeFCo3C4g8yrD0yMKhrrzBvilnVeL8rVlc/r1XLLCQjcLtN7Z8mYi11QOaPRUN
PTqoqEXwlU4lWR3NmGm708wyyY3vgf6tfYm7umATymWVZ6DzGfYDVtRq0yfioa2D
8EoSInccBXPiGXFCwOx1RpqQWOBqjiulRjAEjhmyF+O+qbp/VvEkA9eyISh2DjYw
THnVQZqaqLg1ugw68kQbIIj3xSXXPcbjPkPdh/7E6vVTPkxl/ztKy3haaxdfDcfD
T06aKqLtV00i4kaaPw+RNCR9VeOMlTfTGvAJKyzSyY20DQCrZyko2AH1GQS2Hb52
/nJcxIXK0oBB3wWoo9WEkE8L8+A/mxnSN4k/8ntSHIz24fc8B5eMDqJZgQyykD3T
41lG7Q+pp96Aa1qqB7YZy7xX85chegyxK3Q+69qnZy1MxJieNgl2Zmb8Gj/qSFQc
vjC9gFC/fLXOAPYMYdnnJAPg4wGBDr3YhTSIvbI2qHtcCOVEgIxv+C/VIcodHND7
xLWH0TpOx3a1NUi1AgMBAAGjggE/MIIBOzAPBgNVHRMBAf8EBTADAQH/MB0GA1Ud
DgQWBBSM+xx1vALTn04uSNn5YFSqxLNP+jAfBgNVHSMEGDAWgBQIds3LB/8k9sXN
7buQvOKEN0Z19zAOBgNVHQ8BAf8EBAMCAQYwLwYDVR0fBCgwJjAkoCKgIIYeaHR0
cDovL2NybC5jZXJ0dW0ucGwvY3RuY2EuY3JsMGsGCCsGAQUFBwEBBF8wXTAoBggr
BgEFBQcwAYYcaHR0cDovL3N1YmNhLm9jc3AtY2VydHVtLmNvbTAxBggrBgEFBQcw
AoYlaHR0cDovL3JlcG9zaXRvcnkuY2VydHVtLnBsL2N0bmNhLmNlcjA6BgNVHSAE
MzAxMC8GBFUdIAAwJzAlBggrBgEFBQcCARYZaHR0cHM6Ly93d3cuY2VydHVtLnBs
L0NQUzANBgkqhkiG9w0BAQ0FAAOCAQEAKPpdjKpRGqa+eIZpwndaFy+p4H1FT2wf
9JOJdmyjSkJ4wlUp+xbL6v7D6/6xYO8IcvyWyR1sdqef8HK49mYK9jDjk+ypq7IO
h8R9VbhSuS6KxY3X5lVV6vmYZ6QE4G8IuK9ktvGSVS4uNabf+/r+Gq9oiysCwsck
AsjwXbYN2gsKAWxXGC1vAqIOlB3tJaL29UVh2nKdl0eD7EsFwbk0vo/U5pQ/Yi8u
JJb/OSiK1XXUJ7S8wmURNWK2hIzHSnP9xotjmUJMVMb8Igj8jntZNc9U3lNuzG6R
F2kSR3FCgnCJ9AebGFZwEc7QDTCuohG6Lmb6D3Dtopv/LvqypxAmQQ==
-----END CERTIFICATE-----

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

View certificate JSON

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