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

dataspace.pl · 195.177.217.165:443

Verified

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

Subject
CN=*.dataspace.pl
Issuer
C=PL O=Asseco Data Systems S.A. CN=Certum DV TLS G2 R39 CA
Valid from
2026-09-21T07:35:54+00:00
Expires
2027-04-08T07:35:53+00:00
Days remaining
192
Serial (hex)
46123D3097CA848C874385EA4DE34FEB
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.dataspace.pl, DNS:dataspace.pl

SHA-256 fingerprint

91:6C:1C:93:C0:B2:6B:92:95:30:C9:18:D9:6C:FD:F6:61:B1:84:26:F2:63:34:37:AC:06:B1:0D:91:71:A2:5A
Certificate extensions & PEM
basicConstraints
CA:FALSE
crlDistributionPoints
Full Name: URI:http://certumdvtlsg2r39ca.crl.certum.pl/certumdvtlsg2r39ca.crl
authorityInfoAccess
OCSP - URI:http://certumdvtlsg2r39ca.ocsp-certum.com CA Issuers - URI:http://certumdvtlsg2r39ca.repository.certum.pl/certumdvtlsg2r39ca.cer
authorityKeyIdentifier
33:A8:77:B7:01:38:6F:5F:1F:24:24:A2:1E:6C:14:E3:6E:22:03:DF
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.2.616.1.113527.2.101.1
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
keyUsage
Digital Signature, Key Encipherment
subjectAltName
DNS:*.dataspace.pl, DNS:dataspace.pl
ct_precert_scts
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 21 07:35:55.292 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:55:F9:9A:2B:F5:8B:FF:63:CC:E4:85:54: E0:05:61:7A:97:BC:94:27:07:F2:A1:1C:76:1B:11:28: 6A:BF:D5:D3:02:21:00:95:2C:4A:E9:1A:F4:02:26:BB: 49:17:47:FC:70:D5:DB:2C:C5:F4:99:9F:B6:4C:B1:0A: 7A:D2:D3:79:5B:E8:8A 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 21 07:35:55.048 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:1F:1D:3A:98:99:8F:40:36:05:44:C7:87:92: 5A:3B:42:66:33:F7:91:2D:20:95:47:85:0B:B8:48:03: CB:61:24:02:21:00:A5:B5:8D:B3:24:FE:76:E8:B4:C4: FA:94:A1:4C:3E:AF:E7:F1:14:B2:6E:E9:0B:4C:BB:DC: B8:A1:9C:81:82:5D 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 21 07:35:55.099 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:D6:0B:EC:BC:A2:E9:86:A4:26:02:FF: E7:5D:93:01:8C:A5:55:0E:9C:CB:7B:D7:D3:7E:90:C2: 40:8E:40:EA:5F:02:21:00:85:4C:1D:6B:4D:C1:D9:15: 92:08:68:C7:4F:A8:71:1F:23:9F:FE:64:63:C1:5C:FE: B8:4C:62:2D:62:3F:54:8E
-----BEGIN CERTIFICATE-----
MIIIFTCCBf2gAwIBAgIQRhI9MJfKhIyHQ4XqTeNP6zANBgkqhkiG9w0BAQsFADBS
MQswCQYDVQQGEwJQTDEhMB8GA1UECgwYQXNzZWNvIERhdGEgU3lzdGVtcyBTLkEu
MSAwHgYDVQQDDBdDZXJ0dW0gRFYgVExTIEcyIFIzOSBDQTAeFw0yNjA5MjEwNzM1
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W3V+4WNOcwJ74WUSHmcPdbqq1wRo2+zdkuve6sqvRDbbWhnwtCMLxfFf9edKZcEZ
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jmgwXXHhW/lZEDy96D63gt9kMcauAElqSbuQTyv0S3HL2fz7NGcGZwbp/6mdyMeo
boLqMQqpjrEFAi95+SoLpe2xEtI+viYHNtL5xI1dXSK4cYvXPyiLEbR1Q7SG9XOb
y8xVGOGzo7TIlO4ZUC+AuKjfZBeBEQkA3ubPXBtMI6HhXa4E1uyfFX5qoZwNam/a
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LnBsL2NlcnR1bWR2dGxzZzJyMzljYS5jcmwwgZoGCCsGAQUFBwEBBIGNMIGKMDUG
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MBaAFDOod7cBOG9fHyQkoh5sFONuIgPfMCEGA1UdIAQaMBgwCAYGZ4EMAQIBMAwG
CiqEaAGG9ncCZQEwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMA4GA1Ud
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LnBsMIIBfgYKKwYBBAHWeQIEAgSCAW4EggFqAWgAdgAcn2gs6frwRWlQ+BuWiofd
2zIQ2EzmyLLjglJKxM9ZnwAAAaDC5JScAAAEAwBHMEUCIFX5miv1i/9jzOSFVOAF
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AAAEAwBGMEQCHx06mJmPQDYFRMeHklo7QmYz95EtIJVHhQu4SAPLYSQCIQCltY2z
JP526LTE+pShTD6v5/EUsm7pC0y73LihnIGCXQB3AETCvQzpFA5kpclKAZMKWqG7
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AYylVQ6cy3vX036QwkCOQOpfAiEAhUwda03B2RWSCGjHT6hxHyOf/mRjwVz+uExi
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qJGP3CHuTU1nh4a8O83g6q1N8etLojvja9Dw59dEsqYpGJuL53xSvkK1+ZIWmPIS
bNLO5gjV+NkFZtUlDgM92nbokBwGIMPmlciTMp39wSEdNh37KXnuMaCYyHhZ8EQq
jpHeRwSwKnMRCpqCTh3hCYWaXY/LMnyu225mtnjU3vx/Hza4Yst245usEByNz5Mx
FzSuPKPbrU8zJu8Foh5wwriG2X7DD2FuNOp237SMECZfiIxGoFOWwVCvlU9/VpH/
MCLcO3tjA9Sy2uY2vzNiFAv4MeEpTVfvFiOKRwVPZDfe5iEN9h3uWVYos9a/AF+u
1U/PcgiUeFSuLRFnauQI7nVpQRSqus9MAMhr4pDz+18noIRsQEyeo+DriGZnDsZI
b49hvVYNOmQdEb8osi0AuJz0ne2Qg4rITB26zrbomBnLOwi90UxmEZx/2DjetZu5
LTgSmGiHt7woii3QeXVg+EZ9NL/9QIAdGXiLXIcbxM0obb7OjXj/LCHcPGulf9UH
pJpApokg3c/X
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-27T22:56:49+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=PL O=Asseco Data Systems S.A. CN=Certum DV TLS G2 R39 CA
Issuer
C=PL O=Asseco Data Systems S.A. OU=Certum Certification Authority CN=Certum Trusted Root CA
Valid from
2024-06-18T07:41:22+00:00
Expires
2039-06-05T07:41:22+00:00
Days remaining
4633
Serial (hex)
A82DD9E5DCAFDF13205E70043E6B95A8
Signature
RSA-SHA512
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

83:C0:A5:A7:68:44:C8:40:DF:AF:82:0F:FD:02:AD:F6:57:3A:26:82:3E:F6:AF:75:8A:33:84:A0:AC:04:40:83
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
33:A8:77:B7:01:38:6F:5F:1F:24:24:A2:1E:6C:14:E3:6E:22:03:DF
-----BEGIN CERTIFICATE-----
MIIGnTCCBIWgAwIBAgIRAKgt2eXcr98TIF5wBD5rlagwDQYJKoZIhvcNAQENBQAw
ejELMAkGA1UEBhMCUEwxITAfBgNVBAoTGEFzc2VjbyBEYXRhIFN5c3RlbXMgUy5B
LjEnMCUGA1UECxMeQ2VydHVtIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MR8wHQYD
VQQDExZDZXJ0dW0gVHJ1c3RlZCBSb290IENBMB4XDTI0MDYxODA3NDEyMloXDTM5
MDYwNTA3NDEyMlowUjELMAkGA1UEBhMCUEwxITAfBgNVBAoMGEFzc2VjbyBEYXRh
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d5ahhe8RgM8XVpwGEFoovjHc4K+Cp3auUWVlt7/ARthJoxOttF+jaSrlSve9mWnm
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iTQKUpPawtAwpBeoaRXL8RJ8xjNA+2bEr6vesz2MEvvhpWBSWNAIR5O5YbiLztQ9
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H5o7DtoGiWXvcRKYpGtWt9czdUa1edSk5mTrwZGEXLAkX1ECiAq4GS5vEGjrEQ1u
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9qRYwpzvn3msfBbkRTAcS9eis1AY0Xxqlt3aXkVyqfKhdJxOPpzATM+Ve4jZSd1n
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PtYwxP1nNpxwBgtIPoTk6wIDAQABo4IBRDCCAUAwcQYIKwYBBQUHAQEEZTBjMDcG
CCsGAQUFBzAChitodHRwOi8vc3ViY2EucmVwb3NpdG9yeS5jZXJ0dW0ucGwvY3Ry
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HnDrA8Y4pv0lvxLzSAC4ejGavMXqPTXHA+DEh9kHNd8tVlo24+6YN96Gspb1kMXR
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pSmHRHI3UWVERDeERca0uJ3I+a5ER9vUL9u5ilGG4afyx7QwzitBG+1rU3nRsHyZ
g6osILL/MWc0AbWJMyKzQ9Guj+uwq47h6BC9BsWF34pJeDC8EuN3HNxPlSWSII9l
Omwtipvq0EL1iocJhXdlsG+jIUVs/Sl/Um9JiZV+h/MoytnrPrWMIj+0zz6BdaPP
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8FpPkganuCwy++7umTkM7+Q=
-----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=Asseco Data Systems S.A. OU=Certum Certification Authority CN=Certum Trusted Root CA
Valid from
2018-03-16T12:10:13+00:00
Expires
2043-03-16T12:10:13+00:00
Days remaining
6013
Serial (hex)
1EBF5950B8C980374C06F7EB554FB5ED
Signature
RSA-SHA512
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

FE:76:96:57:38:55:77:3E:37:A9:5E:7A:D4:D9:CC:96:C3:01:57:C1:5D:31:76:5B:A9:B1:57:04:E1:AE:78:FD
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
keyUsage
Certificate Sign, CRL Sign
-----BEGIN CERTIFICATE-----
MIIFwDCCA6igAwIBAgIQHr9ZULjJgDdMBvfrVU+17TANBgkqhkiG9w0BAQ0FADB6
MQswCQYDVQQGEwJQTDEhMB8GA1UEChMYQXNzZWNvIERhdGEgU3lzdGVtcyBTLkEu
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P78v3DSk+yshzWePS/Tj6tQ/50+6uaWTRRxmHyH6ZF5v4HaUMst19W7l9o/HuKTM
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0ISVoDwUQwbKytu4QTbaakRnh6+v40URFWkIsr4WOZckbxJF0WddCajJFdr60qZf
E2Efv4WstK2tBZQIgx51F9NxO5NQI1mg7TyRVJ12AMXDuDjb
-----END CERTIFICATE-----

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

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