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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

zensystems.dk · 150.171.109.34:443

Verified

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

Subject
CN=zensystems.dk
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=GeoTrust TLS RSA CA G1
Valid from
2026-07-28T00:00:00+00:00
Expires
2027-01-28T23:59:59+00:00
Days remaining
105
Serial (hex)
055D63EE1306719BAC2498FB6D779D45
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:zensystems.dk

SHA-256 fingerprint

EC:19:34:91:3C:D5:48:BE:5E:5B:6A:FE:68:3D:22:E5:C4:B2:9C:C6:08:71:F6:7E:12:44:BB:E0:C6:BB:FB:F6
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
C1:CC:CC:D5:E0:8C:F6:77:EF:B3:5E:87:B6:37:29:77:43:02:40:0A
subjectAltName
DNS:zensystems.dk
certificatePolicies
Policy: 2.23.140.1.2.1 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client 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 : Jul 28 08:09:20.840 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:C2:A9:12:0A:E9:B2:3D:6E:64:3A:13: 96:5D:82:E9:00:4F:0F:4E:DF:DB:FC:E7:73:74:51:2A: 13:E6:02:89:2A:02:21:00:C0:4B:04:0E:80:C6:B9:9A: 39:26:2F:FB:A0:04:8C:7D:EA:C2:87:53:73:DE:07:5C: 92:57:C4:7E:F2:BC:C2:5D 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 : Jul 28 08:09:20.823 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:C1:46:67:F6:22:B1:A6:82:9E:F5:E6: CB:B5:2C:0F:1E:E3:00:1E:FC:23:8E:E6:5E:DA:8A:16: 38:25:6E:A5:FC:02:20:0B:97:34:93:27:BB:A4:1F:04: 70:5E:77:B5:2E:F1:26:92:D8:4C:B3:91:E4:74:4F:87: BE:8B:26:D1:0B:B7:F3 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 28 08:09:20.907 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:AC:66:2D:6D:B0:B7:AE:A8:BF:79:12: 82:EA:1D:4C:9D:D5:11:A5:58:7E:E0:15:CF:91:55:E9: A0:80:D8:E9:68:02:21:00:82:71:68:CA:D9:CC:B3:4C: E5:E3:FF:CE:BC:F0:FD:4F:98:91:13:64:F8:D5:10:E2: F0:0B:F0:61:97:BD:D3:F3
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-15T01:42:50+00:00

Server-presented chain · 2 additional certificates

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
383
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-----

Chain certificate 2

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2013-08-01T12:00:00+00:00
Expires
2038-01-15T12:00:00+00:00
Days remaining
4110
Serial (hex)
033AF1E6A711A9A0BB2864B11D09FAE5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

CB:3C:CB:B7:60:31:E5:E0:13:8F:8D:D3:9A:23:F9:DE:47:FF:C3:5E:43:C1:14:4C:EA:27:D4:6A:5A:B1:CB:5F
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Digital Signature, Certificate Sign, CRL Sign
subjectKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
-----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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