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

biaman.pl · 212.33.68.9:443

Verified

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

Subject
CN=biaman.pl
Issuer
C=GR O=Hellenic Academic and Research Institutions CA CN=GEANT TLS ECC 1
Valid from
2026-07-22T21:09:59+00:00
Expires
2027-02-06T21:09:58+00:00
Days remaining
104
Serial (hex)
3CB143B284583FA9356140AD4395250A
Signature
ecdsa-with-SHA384
Public key
EC 256 prime256v1

Subject alternative names (SAN)

DNS:biaman.pl, DNS:www.biaman.pl

SHA-256 fingerprint

11:B8:2D:13:26:9C:FA:12:9A:5A:AA:C5:58:BC:1C:0C:80:71:F9:25:6B:EC:13:8C:69:6A:97:82:FA:DF:A7:F6
Certificate extensions & PEM
authorityKeyIdentifier
E9:99:06:8D:17:1F:AB:FB:96:1A:5A:C8:5B:5E:5D:5E:EC:DA:9C:8F
authorityInfoAccess
CA Issuers - URI:http://crt.harica.gr/HARICA-GEANT-TLS-E1.cer
subjectAltName
DNS:biaman.pl, DNS:www.biaman.pl
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 0.4.0.2042.1.6 Policy: 1.3.6.1.4.1.26513.1.1.1.1
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl.harica.gr/HARICA-GEANT-TLS-E1.crl
subjectKeyIdentifier
7A:AE:8E:39:54:9C:2E:31:DC:A9:FF:50:EE:84:3E:37:C9:31:48:5A
keyUsage
Digital Signature
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Jul 22 21:20:01.696 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:DB:AA:11:BE:21:34:77:60:7B:0C:CD: E3:97:4C:67:E7:31:B8:A2:0C:A0:F8:9C:72:37:72:68: 84:65:E3:B0:AC:02:21:00:E7:5A:3C:1A:97:8A:B8:39: 91:30:FA:02:7D:A7:3D:93:C0:9D:A8:C9:B5:D7:28:24: 67:F3:4B:9F:D9:18:65:4A Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 46:A2:39:67:C6:0D:B6:46:87:C6:6F:3D:F9:99:94:76: 93:A6:A6:11:20:84:57:D5:55:E7:E3:D0:A1:D9:B6:46 Timestamp : Jul 22 21:20:01.727 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:D2:C0:C2:7D:AC:F2:88:C9:40:FC:8E: C1:12:D6:61:9B:15:0B:16:8E:EE:5C:73:88:87:DF:11: B7:DA:03:BA:7E:02:20:45:C1:06:CB:93:E2:70:D9:B3: 09:40:AC:2E:2F:B0:30:40:D3:F8:74:2D:27:E7:18:52: E7:50:9E:EC:C0:00:DE 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 : Jul 22 21:20:01.697 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:3C:6C:59:7D:ED:FA:45:CF:2E:BE:5C:94: F6:EC:7D:E9:1A:9F:91:E4:72:65:C7:5F:B8:C2:86:CA: 2D:D2:B5:97:02:20:42:F0:FC:31:0A:1C:2E:2D:6D:BD: 2E:9E:BF:D0:78:6A:F0:98:56:C7:D4:1F:80:BB:8B:73: 85:F7:C4:59:7D:A6
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-25T12:00:13+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=GR O=Hellenic Academic and Research Institutions CA CN=GEANT TLS ECC 1
Issuer
C=GR O=Hellenic Academic and Research Institutions CA CN=HARICA TLS ECC Root CA 2021
Valid from
2025-01-03T11:14:21+00:00
Expires
2039-12-31T11:14:20+00:00
Days remaining
4814
Serial (hex)
42FDDCE1261607E1A5E6935A400161DD
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

6C:DF:0B:A1:71:1E:85:6D:22:8B:A0:0C:A0:4C:5C:1C:3D:79:94:4C:03:7B:71:3B:15:5A:4E:E4:B4:7E:C5:3C
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
authorityKeyIdentifier
C9:1B:53:81:12:FE:04:D5:16:D1:AA:BC:9A:6F:B7:A0:95:19:6E:CA
authorityInfoAccess
CA Issuers - URI:http://crt.harica.gr/HARICA-TLS-Root-2021-ECC.cer
certificatePolicies
Policy: X509v3 Any Policy
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl.harica.gr/HARICA-TLS-Root-2021-ECC.crl
subjectKeyIdentifier
E9:99:06:8D:17:1F:AB:FB:96:1A:5A:C8:5B:5E:5D:5E:EC:DA:9C:8F
keyUsage
Digital Signature, Certificate Sign, CRL Sign
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=GR O=Hellenic Academic and Research Institutions CA CN=HARICA TLS ECC Root CA 2021
Issuer
C=GR L=Athens O=Hellenic Academic and Research Institutions Cert. Authority CN=Hellenic Academic and Research Institutions ECC RootCA 2015
Valid from
2021-09-02T07:44:37+00:00
Expires
2029-08-31T07:44:36+00:00
Days remaining
1040
Serial (hex)
716027C8857A73542DEF516C1C2EEB0F
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

50:E2:7F:90:EB:6A:F4:95:B0:E6:EE:B6:55:CC:89:44:4C:27:D3:C9:5B:68:23:FA:02:AB:DC:95:F1:63:6A:E1
Certificate extensions & PEM
basicConstraints
CA:TRUE
authorityKeyIdentifier
B4:22:0B:82:99:24:01:0E:9C:BB:E4:0E:FD:BF:FB:97:20:93:99:2A
authorityInfoAccess
CA Issuers - URI:http://repo.harica.gr/certs/HaricaECCRootCA2015.crt
certificatePolicies
Policy: X509v3 Any Policy
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl.harica.gr/HaricaECCRootCA2015.crl
subjectKeyIdentifier
C9:1B:53:81:12:FE:04:D5:16:D1:AA:BC:9A:6F:B7:A0:95:19:6E:CA
keyUsage
Digital Signature, Certificate Sign, CRL Sign
-----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

Registration / WHOIS →DNS records →