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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

petrotel.pl · 87.204.19.88:443

Verified

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

Subject
CN=*.petrotel.pl
Issuer
C=PL O=Asseco Data Systems S.A. CN=Certum DV TLS G2 R39 CA
Valid from
2026-06-12T08:53:41+00:00
Expires
2026-12-28T08:53:40+00:00
Days remaining
68
Serial (hex)
1FE3D4580F1504E5A8C10B00ABC3DAC9
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.petrotel.pl, DNS:petrotel.pl

SHA-256 fingerprint

3D:92:B2:29:99:80:90:52:5D:F1:A2:38:38:A4:F6:72:8F:BA:29:25:AF:FE:0C:E9:A9:DC:EE:58:4A:4D:69:B3
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:*.petrotel.pl, DNS:petrotel.pl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : AF:67:88:3B:57:B0:4E:DD:8F:A6:D9:7E:F6:2E:A8:EB: 81:0A:C7:71:60:F0:24:5E:55:D6:0C:2F:E7:85:87:3A Timestamp : Jun 12 08:53:42.979 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:36:F4:C4:90:60:4E:72:3E:DA:C4:00:C3: 64:4B:C2:B9:65:22:56:3B:B6:58:FF:A4:3A:55:5B:D1: A0:F5:76:8B:02:20:4B:B1:60:9F:55:72:32:FA:C9:7F: FF:B0:B5:81:70:FC:B2:7C:69:38:8A:38:E1:3C:83:76: F8:4A:8D:DE:19:AB Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D8:09:55:3B:94:4F:7A:FF:C8:16:19:6F:94:4F:85:AB: B0:F8:FC:5E:87:55:26:0F:15:D1:2E:72:BB:45:4B:14 Timestamp : Jun 12 08:53:42.977 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:84:6A:93:4F:54:10:5B:36:22:79:62: F1:45:C4:F6:2F:EF:E3:99:A2:FE:31:50:9C:FD:59:E1: B8:90:3A:3A:B5:02:20:46:4A:88:F3:04:ED:36:9B:C0: 43:4E:66:C7:1E:E3:FC:0A:6C:63:D7:59:32:4E:50:4B: 57:A9:DB:32:D0:5D:8D 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 : Jun 12 08:53:43.029 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:91:C9:67:01:4D:31:E3:5D:E2:0B:3D: F9:57:68:BB:8E:63:AA:55:9D:46:2C:FD:42:CA:9C:29: B6:CE:A0:54:AC:02:21:00:D4:C0:23:5C:0B:0E:8A:0A: 47:BC:37:EB:26:02:75:73:C6:B1:E9:97:0F:63:9A:F3: 4E:9E:C1:D2:0F:1C:15:5B
-----BEGIN CERTIFICATE-----
MIIIEjCCBfqgAwIBAgIQH+PUWA8VBOWowQsAq8PayTANBgkqhkiG9w0BAQsFADBS
MQswCQYDVQQGEwJQTDEhMB8GA1UECgwYQXNzZWNvIERhdGEgU3lzdGVtcyBTLkEu
MSAwHgYDVQQDDBdDZXJ0dW0gRFYgVExTIEcyIFIzOSBDQTAeFw0yNjA2MTIwODUz
NDFaFw0yNjEyMjgwODUzNDBaMBgxFjAUBgNVBAMMDSoucGV0cm90ZWwucGwwggIi
MA0GCSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQDOvhLhTpORmpa3g9AoytercCgE
R99Voo2+SbvbnCdbM8umn96ae83CM948paVcSue4Ql5Ybuub4SF8+PPsLarzNRZo
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ndphyJXwuU2TBVrZowUT1kr0MzR+MvDWpowSjqyaDKLMxaotUGsquihfXbO3KsBZ
KLtAPhfSYAcURg6DhskHF9upbXnIy6bV/x4ID5ikHAarw9sLgbLEqPc8mZ7M0l+e
3gkvgGiTiDLh4jwDuTaCYZzAOPAxJc6ldmog4WuXm5WdH+8v1fRfriFsxyUgod1X
vDk2zWrj+BS/EYjwbbdHomY0V5NTTo0L/zZLQFyb7rJ7K+hLB2tnqpbALtOHNlHT
v/nlnqKhVHHD3BCpq+Vr5DMRMrdj6jdzq+N4HmdRytp/+4vKoQyjv8llh7ZeOhVw
DJsyc4V4ZCQa641eYty7HpwOgwoJ3vHJxZ9KyKi/wLcCfuLZLiKeQyWBoiEuNHND
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momYAMXe07qN0PhFUwIDAQABo4IDHDCCAxgwDAYDVR0TAQH/BAIwADBPBgNVHR8E
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AEcwRQIhAIRqk09UEFs2Inli8UXE9i/v45mi/jFQnP1Z4biQOjq1AiBGSojzBO02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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-21T00:04:37+00:00

Server-presented chain · 1 additional certificate

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
4610
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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ggIiMA0GCSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQCo52NXEXWoO2w6zQeBtNer
d5ahhe8RgM8XVpwGEFoovjHc4K+Cp3auUWVlt7/ARthJoxOttF+jaSrlSve9mWnm
TJOo1QLuoOTWuZ9XUkMjDG1ztTbFsgRqQyOtZsDqniHD79wqD49DQW4geVslp9/L
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H5o7DtoGiWXvcRKYpGtWt9czdUa1edSk5mTrwZGEXLAkX1ECiAq4GS5vEGjrEQ1u
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Omwtipvq0EL1iocJhXdlsG+jIUVs/Sl/Um9JiZV+h/MoytnrPrWMIj+0zz6BdaPP
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TjKfFlzx4NR8gbK7m8sXq6cgP4UAtyvDswebFIRQiuhjqOT9G7+56+4zC0RaEZx/
LwoFE+ObVXxX674szQvIc+7WPCooVsUbwZIikzJqZb4gJQ1OQx23CgyyYlsPHIDN
8FpPkganuCwy++7umTkM7+Q=
-----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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