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

TLSv1.2

datasystem.pl · 91.199.95.10:443

Verified

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

Subject
CN=*.datasystem.pl
Issuer
C=AE O=SSL2BUY EMEA LLC CN=SSL2BUY EMEA RSA Domain Validation Secure Server CA
Valid from
2026-05-16T00:00:00+00:00
Expires
2026-11-30T23:59:59+00:00
Days remaining
48
Serial (hex)
FEBB814262AD5CD49AA8F5E46C9BABC4
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.datasystem.pl, DNS:datasystem.pl

SHA-256 fingerprint

58:49:E8:01:10:DA:49:EF:7C:A2:CB:C3:F4:6A:69:77:52:AA:0A:1B:03:1E:9E:81:57:84:34:1F:41:FB:16:CE
Certificate extensions & PEM
authorityKeyIdentifier
81:59:48:C9:BA:E5:00:6F:DF:B7:FF:50:C5:AB:EF:DD:E6:E4:AE:90
subjectKeyIdentifier
E4:03:F6:91:60:58:0B:4E:4B:04:6C:0F:73:2E:16:88:91:D9:5B:E3
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication
certificatePolicies
Policy: 2.23.140.1.2.1
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SSL2BUYEMEARSADomainValidationSecureServerCA.crt OCSP - URI:http://ocsp.sectigo.com
subjectAltName
DNS:*.datasystem.pl, DNS:datasystem.pl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : May 16 08:38:29.329 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:F7:7C:C9:24:BD:40:6D:B6:96:10:51: 64:89:33:03:EB:11:BB:15:C6:19:79:57:B7:D5:5E:BD: B1:D4:39:DF:58:02:21:00:AC:BB:FE:28:8D:04:C8:AD: 37:FA:10:39:F2:1B:3D:AF:39:D1:95:80:09:28:32:14: 45:5D:A6:43:84:27:1B:CA Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C8:A3:C4:7F:C7:B3:AD:B9:35:6B:01:3F:6A:7A:12:6D: E3:3A:4E:43:A5:C6:46:F9:97:AD:39:75:99:1D:CF:9A Timestamp : May 16 08:38:29.412 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:52:BD:1B:32:1B:26:A9:8E:CA:C1:88:13: 85:5F:43:DC:EE:F2:4E:E1:37:6F:FB:82:0F:89:76:37: 01:4E:AD:3D:02:21:00:92:C7:95:00:C5:1B:EF:60:88: BE:BB:E5:53:2B:7A:F3:8C:8C:D7:81:67:B2:DD:72:9E: 6A:C6:28:7D:C8:39:BD Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 6C:FE:50:19:43:A8:5E:A9:16:BC:52:D1:33:E4:DC:C9: 1E:F1:41:1C:7D:25:84:20:D1:73:80:9E:18:18:EB:3A Timestamp : May 16 08:38:30.151 2026 GMT Extensions: 00:00:05:00:0B:C1:9A:82 Signature : ecdsa-with-SHA256 30:44:02:20:2F:7A:D3:D8:EB:6D:00:F6:13:09:E9:85: E3:F6:91:96:C7:DD:FB:FF:71:FF:3F:E9:48:9C:39:D5: 59:D9:0A:A3:02:20:68:FE:85:14:18:A9:11:66:C0:63: 6F:3A:AA:E8:4F:D1:CF:6D:1C:6C:A5:9F:4B:D5:B8:36: 34:2C:74:C4:1C:00
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-13T17:29:02+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=AE O=SSL2BUY EMEA LLC CN=SSL2BUY EMEA RSA Domain Validation Secure Server CA
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication Root R46
Valid from
2024-07-31T00:00:00+00:00
Expires
2034-07-30T23:59:59+00:00
Days remaining
2847
Serial (hex)
9BD440751E4623E9EB60FC2C6A9534C7
Signature
RSA-SHA384
Public key
RSA 3072

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

58:F0:F7:56:75:8E:93:FB:0B:6B:17:A3:6A:38:50:47:5D:68:BC:0D:6C:99:CB:E2:2A:1B:18:35:1C:89:FF:1F
Certificate extensions & PEM
authorityKeyIdentifier
56:73:58:64:95:F9:92:1A:B0:12:2A:04:62:79:A1:40:15:88:21:49
subjectKeyIdentifier
81:59:48:C9:BA:E5:00:6F:DF:B7:FF:50:C5:AB:EF:DD:E6:E4:AE:90
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE, pathlen:0
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://crl.sectigo.com/SectigoPublicServerAuthenticationRootR46.crl
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoPublicServerAuthenticationRootR46.p7c OCSP - URI:http://ocsp.sectigo.com
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication Root R46
Issuer
C=US ST=New Jersey L=Jersey City O=The USERTRUST Network CN=USERTrust RSA Certification Authority
Valid from
2021-03-22T00:00:00+00:00
Expires
2038-01-18T23:59:59+00:00
Days remaining
4115
Serial (hex)
D27FBBC1DE359E5216AD6149586099C4
Signature
RSA-SHA384
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

92:F3:51:BF:3D:54:16:4D:FA:8D:D8:F9:E1:13:9D:31:50:34:97:86:48:5D:2B:9E:EC:D0:0E:29:71:C1:E6:C5
Certificate extensions & PEM
authorityKeyIdentifier
53:79:BF:5A:AA:2B:4A:CF:54:80:E1:D8:9B:C0:9D:F2:B2:03:66:CB
subjectKeyIdentifier
56:73:58:64:95:F9:92:1A:B0:12:2A:04:62:79:A1:40:15:88:21:49
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: X509v3 Any Policy
crlDistributionPoints
Full Name: URI:http://crl.usertrust.com/USERTrustRSACertificationAuthority.crl
authorityInfoAccess
OCSP - URI:http://ocsp.usertrust.com
-----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.

View certificate JSON

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