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

samnet.pl · 85.128.239.111:443

Verified

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

Subject
CN=samnet.pl
Issuer
C=PL O=nazwa.pl Sp. z o.o. CN=nazwaSSL DV TLS G2 E29 CA
Valid from
2026-08-12T10:00:14+00:00
Expires
2027-02-18T00:00:00+00:00
Days remaining
99
Serial (hex)
38ED6C3B14E5BEAC94DAB8F21E6BE30B
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

DNS:samnet.pl, DNS:www.samnet.pl

SHA-256 fingerprint

4E:E1:08:AF:97:FD:5B:FB:71:24:EC:0A:87:C2:60:BB:5C:29:57:12:FD:7F:F6:E0:21:84:A3:27:CE:D3:BC:6E
Certificate extensions & PEM
basicConstraints
CA:FALSE
crlDistributionPoints
Full Name: URI:http://nazwassldvtlsg2e29ca.crl.certum.pl/nazwassldvtlsg2e29ca.crl
authorityInfoAccess
OCSP - URI:http://nazwassldvtlsg2e29ca.ocsp-certum.com CA Issuers - URI:http://nazwassldvtlsg2e29ca.repository.certum.pl/nazwassldvtlsg2e29ca.cer
authorityKeyIdentifier
A0:EA:D4:0B:0F:49:FA:43:10:E4:5B:BF:C0:23:FF:5C:14:CE:A4:2C
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
subjectAltName
DNS:samnet.pl, DNS:www.samnet.pl
ct_precert_scts
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 : Aug 12 10:00:14.835 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:63:10:5B:1D:08:E0:9F:E2:7B:21:F1:B9: 5E:7B:91:E4:C2:BC:1A:1B:B6:2C:C9:A5:CF:4A:39:17: 16:B3:62:1C:02:21:00:F2:FB:BE:84:E6:7D:93:0F:27: 9D:4C:AD:EE:3A:23:09:AE:E5:6B:E6:D7:A2:15:73:0A: 32:8C:7F:15:86:8A:B3 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 : Aug 12 10:00:14.796 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:20:F5:27:C5:A8:D8:B5:8A:A2:D1:AE:31: 87:35:8D:2D:D0:EC:D8:75:6B:70:7E:4F:40:43:49:39: 73:75:FD:B2:02:20:72:F5:B3:52:B6:E7:1F:08:B5:71: CF:64:BA:63:7C:A3:1E:EE:1E:85:DD:E8:77:34:C7:3A: AE:C5:2A:25:35:61 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 : Aug 12 10:00:15.069 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:E8:F4:3E:3A:3E:B7:F3:1A:58:63:B6: 53:49:16:45:FB:1E:A2:08:22:0C:63:0A:BC:50:67:08: 5D:74:62:2D:43:02:20:41:FC:91:EA:FB:6D:FB:E1:B8: 81:DE:9A:95:DB:0F:A7:74:E6:43:71:CB:23:8C:B7:88: A7:6A:8F:2F:39:E7:34
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-11-10T23:51:12+00:00

Server-presented chain · 3 additional certificates

Chain certificate 1

Subject
C=PL O=nazwa.pl Sp. z o.o. CN=nazwaSSL DV TLS G2 E29 CA
Issuer
C=PL O=Asseco Data Systems S.A. OU=Certum Certification Authority CN=Certum EC-384 CA
Valid from
2024-08-20T09:37:15+00:00
Expires
2029-08-14T09:37:15+00:00
Days remaining
1007
Serial (hex)
B8FF01A8B6586AF72FE313D2D2B45F14
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

7F:02:E3:51:F8:9B:11:97:41:B0:1D:13:71:CA:1B:9C:14:ED:8B:34:D6:40:BA:44:EF:C3:AB:B9:FE:BB:E7:C8
Certificate extensions & PEM
authorityInfoAccess
CA Issuers - URI:http://subca.repository.certum.pl/cec384ca.cer OCSP - URI:http://subca.ocsp-certum.com
authorityKeyIdentifier
8D:06:66:74:24:76:3A:F3:89:F7:BC:D6:BD:47:7D:2F:BC:10:5F:4B
basicConstraints
CA:TRUE, pathlen:0
crlDistributionPoints
Full Name: URI:http://subca.crl.certum.pl/cec384ca.crl
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
keyUsage
Certificate Sign, CRL Sign
certificatePolicies
Policy: X509v3 Any Policy
subjectKeyIdentifier
A0:EA:D4:0B:0F:49:FA:43:10:E4:5B:BF:C0:23:FF:5C:14:CE:A4:2C
-----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 EC-384 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
678
Serial (hex)
DAFD4BF54121E027D68696225F1FCEE8
Signature
RSA-SHA512
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

B7:24:50:AB:F5:04:7A:8A:F6:3E:C9:D8:7E:33:14:84:85:0B:18:49:A2:55:0A:82:A8:6D:B6:B4:1E:D3:87:60
Certificate extensions & PEM
basicConstraints
CA:TRUE
subjectKeyIdentifier
8D:06:66:74:24:76:3A:F3:89:F7:BC:D6:BD:47:7D:2F:BC:10:5F:4B
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-----
MIIEEDCCAvigAwIBAgIRANr9S/VBIeAn1oaWIl8fzugwDQYJKoZIhvcNAQENBQAw
fjELMAkGA1UEBhMCUEwxIjAgBgNVBAoTGVVuaXpldG8gVGVjaG5vbG9naWVzIFMu
QS4xJzAlBgNVBAsTHkNlcnR1bSBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0eTEiMCAG
A1UEAxMZQ2VydHVtIFRydXN0ZWQgTmV0d29yayBDQTAeFw0yMzA5MTkxMDAwMDBa
Fw0yODA5MTkxMDAwMDBaMHQxCzAJBgNVBAYTAlBMMSEwHwYDVQQKExhBc3NlY28g
RGF0YSBTeXN0ZW1zIFMuQS4xJzAlBgNVBAsTHkNlcnR1bSBDZXJ0aWZpY2F0aW9u
IEF1dGhvcml0eTEZMBcGA1UEAxMQQ2VydHVtIEVDLTM4NCBDQTB2MBAGByqGSM49
AgEGBSuBBAAiA2IABMQojqsYW2q+bmQ3Y+TN7Ks698yhuA6CSdeGKZ+hlPLjYHiY
gXgGTfLsmg5XYIOftOYXLxqzXQJbiSM8whEFKqeIExjzUITXvTQsJ4lV/85M59+m
HyjE8FTDuXy3U63rwqOCAT8wggE7MA8GA1UdEwEB/wQFMAMBAf8wHQYDVR0OBBYE
FI0GZnQkdjrzife81r1HfS+8EF9LMB8GA1UdIwQYMBaAFAh2zcsH/yT2xc3tu5C8
4oQ3RnX3MA4GA1UdDwEB/wQEAwIBBjAvBgNVHR8EKDAmMCSgIqAghh5odHRwOi8v
Y3JsLmNlcnR1bS5wbC9jdG5jYS5jcmwwawYIKwYBBQUHAQEEXzBdMCgGCCsGAQUF
BzABhhxodHRwOi8vc3ViY2Eub2NzcC1jZXJ0dW0uY29tMDEGCCsGAQUFBzAChiVo
dHRwOi8vcmVwb3NpdG9yeS5jZXJ0dW0ucGwvY3RuY2EuY2VyMDoGA1UdIAQzMDEw
LwYEVR0gADAnMCUGCCsGAQUFBwIBFhlodHRwczovL3d3dy5jZXJ0dW0ucGwvQ1BT
MA0GCSqGSIb3DQEBDQUAA4IBAQCVoBctpBZkKPjqOj5W3GD4J81sS57ag3VaqL5f
Ux8kJJS+mDZFC9MfI6ZXQnclYWPZcc9uQ2wtOnEsYOljl2/F8xpZaryuE5SFT4Gn
HVkTUNtURi0H86QuCTvadWsYg1bGSPfZkKywI3SlRq3WTAw3Pe7a4pPVx4sPwNVP
Bo+fttBqhVUhlnMMBndLDRniL16aOA964u7Ka4NjHHkpR+64I8u+HhNAL8mpbqh3
PFxElVRHZ+cJTpanuINfb5x82GVuNpEIBKMRkcQ21/cghMAUHkfKoQHooMHRwdnp
U4O/1fsDEmjlVyDo0lyO1b4uapwlVqU0zpWdpcvuTTP5gkDZ
-----END CERTIFICATE-----

Chain certificate 3

Subject
C=PL O=Unizeto Technologies S.A. OU=Certum Certification Authority CN=Certum Trusted Network CA
Issuer
C=PL O=Unizeto Sp. z o.o. CN=Certum CA
Valid from
2008-10-22T12:07:37+00:00
Expires
2027-06-10T10:46:39+00:00
Days remaining
211
Serial (hex)
939285400165715F947F288FEFC99B28
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

94:94:24:DC:2C:CA:AB:5E:9E:80:D6:6E:0E:3F:7D:EE:B3:20:1C:60:7D:43:15:EF:4C:6F:2D:93:A9:17:27:9D
Certificate extensions & PEM
basicConstraints
CA:TRUE
subjectKeyIdentifier
08:76:CD:CB:07:FF:24:F6:C5:CD:ED:BB:90:BC:E2:84:37:46:75:F7
authorityKeyIdentifier
DirName:/C=PL/O=Unizeto Sp. z o.o./CN=Certum CA serial:01:00:20
keyUsage
Certificate Sign, CRL Sign
crlDistributionPoints
Full Name: URI:http://crl.certum.pl/ca.crl
authorityInfoAccess
OCSP - URI:http://subca.ocsp-certum.com CA Issuers - URI:http://repository.certum.pl/ca.cer
certificatePolicies
Policy: X509v3 Any Policy CPS: http://www.certum.pl/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.

View certificate JSON

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