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THE CERTIFICATE BEHIND THE CONNECTION

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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

onet.pl · 18.238.243.88:443

Verified

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

Subject
C=PL ST=Województwo mazowieckie L=Warszawa O=Ringier Axel Springer Polska sp. z o.o CN=*.onet.pl
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=GeoTrust TLS RSA CA G1
Valid from
2026-09-18T00:00:00+00:00
Expires
2027-04-04T23:59:59+00:00
Days remaining
178
Serial (hex)
0979FBAE3CFD73C3951872B809D5AAC5
Signature
RSA-SHA256
Public key
EC 256 prime256v1

Subject alternative names (SAN)

DNS:*.onet.pl, DNS:onet.pl

SHA-256 fingerprint

69:90:9A:5B:38:97:B0:25:20:00:86:5F:78:B5:B9:21:85:0A:54:29:B2:1C:EE:0B:F0:71:AB:64:E1:17:AA:A9
Certificate extensions & PEM
authorityKeyIdentifier
94:4F:D4:5D:8B:E4:A4:E2:A6:80:FE:FD:D8:F9:00:EF:A3:BE:02:57
subjectKeyIdentifier
E5:6C:59:9A:B0:CA:1D:5A:F9:FD:ED:00:6C:BB:9A:29:9E:E1:40:99
subjectAltName
DNS:*.onet.pl, DNS:onet.pl
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Agreement
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://cdp.geotrust.com/GeoTrustTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.geotrust.com CA Issuers - URI:http://cacerts.geotrust.com/GeoTrustTLSRSACAG1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F: AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26 Timestamp : Sep 18 11:17:03.997 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:84:98:F6:CE:58:F2:0B:7E:C0:78:5B: F1:90:F5:0B:BC:BF:36:3D:9C:F8:50:20:D6:EA:F2:DB: 0D:CB:60:EF:BF:02:20:5D:21:F2:E9:31:8F:7C:B7:6A: 19:52:74:2F:0D:57:05:50:4A:9A:3B:3B:70:AF:D7:2B: F2:9F:04:25:72:D6:66 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 18 11:17:04.023 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:19:51:6A:9E:51:43:44:10:EF:28:A1:87: 69:F7:6B:0F:B3:D0:85:1F:63:AF:37:27:79:E8:32:FF: A7:9A:47:07:02:20:48:96:4F:F2:AC:B2:1A:B9:8A:27: 54:A2:5A:53:CF:65:EA:79:EE:A4:E7:45:43:CA:E8:CA: 36:10:80:FE:7E:C6 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 18 11:17:04.087 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:0F:AA:A1:AE:3D:17:76:12:32:11:53:4C: 5D:74:2D:17:28:D7:B7:5F:F0:BE:F1:E5:1A:99:C3:83: 78:38:61:4A:02:20:09:0C:90:AC:26:FC:AE:9E:60:32: CE:6F:92:16:98:98:0D:3D:F9:01:CE:2E:EB:FC:2C:BF: 85:F7:55:59:20:56
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-08T06:06:37+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=GeoTrust TLS RSA CA G1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2017-11-02T12:23:37+00:00
Expires
2027-11-02T12:23:37+00:00
Days remaining
390
Serial (hex)
0D07782A133FC6F9A57296E131FFD179
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C0:6E:30:7F:7C:FC:1D:32:FA:72:A4:C0:33:C8:7B:90:01:9A:F2:16:F0:77:5D:64:97:8A:2E:CA:6C:8A:23:0E
Certificate extensions & PEM
subjectKeyIdentifier
94:4F:D4:5D:8B:E4:A4:E2:A6:80:FE:FD:D8:F9:00:EF:A3:BE:02:57
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.digicert.com/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.

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