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

TLSv1.2

systemec.nl · 89.20.83.254:443

Verified

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

Subject
CN=*.systemec.nl
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication CA DV R36
Valid from
2026-08-20T00:00:00+00:00
Expires
2027-03-06T23:59:59+00:00
Days remaining
148
Serial (hex)
A1E0D06984EB1F59FCB76CD2A5853DA3
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.systemec.nl, DNS:systemec.nl

SHA-256 fingerprint

3E:5D:18:2A:61:4E:84:96:8A:0C:6D:19:D6:73:FB:A2:47:DF:74:7A:AF:91:68:2B:8F:0D:5C:55:F9:AA:9B:30
Certificate extensions & PEM
authorityKeyIdentifier
68:C0:12:16:18:0E:AF:CE:F6:87:A6:32:57:A3:46:51:5D:CB:07:27
subjectKeyIdentifier
E0:82:FD:28:DE:AC:B8:22:36:ED:8D:DA:55:B1:C2:C4:ED:41:8D:8E
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication
certificatePolicies
Policy: 1.3.6.1.4.1.6449.1.2.2.7 CPS: https://sectigo.com/CPS Policy: 2.23.140.1.2.1
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoPublicServerAuthenticationCADVR36.crt OCSP - URI:http://ocsp.sectigo.com
subjectAltName
DNS:*.systemec.nl, DNS:systemec.nl
ct_precert_scts
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 20 07:41:19.541 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:EC:EF:83:28:44:A8:A1:06:D0:E9:F4: 47:E6:AC:D4:C4:0A:89:73:A2:E0:9C:AA:27:0E:19:98: 93:BA:9F:17:A3:02:20:56:7B:DA:49:14:CA:8C:B2:50: 12:BC:E3:5A:58:E8:AE:B0:2A:D1:7F:0D:A5:2D:6E:2C: EF:3D:4B:CB:0E:7A:C1 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46: FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8 Timestamp : Aug 20 07:41:19.784 2026 GMT Extensions: 00:00:05:00:09:D1:E0:AA Signature : ecdsa-with-SHA256 30:44:02:20:38:F2:34:FC:24:69:B7:C7:9B:40:07:1A: 4B:69:54:F2:F5:25:8A:09:69:72:C2:AD:92:5A:F6:BB: 67:7E:41:D8:02:20:01:04:22:CB:43:11:D8:42:07:C7: 95:83:C6:81:AB:AF:4E:09:FF:EE:1C:75:BB:6D:5B:1C: 86:A1:A6:E5:D8:E8 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 59:6E:6C:33:86:94:B2:59:72:A2:56:C8:A0:E8:DD:90: 4A:76:E8:08:3D:DA:87:3B:01:08:38:28:14:3C:EE:59 Timestamp : Aug 20 07:41:19.644 2026 GMT Extensions: 00:00:05:00:01:87:DA:98 Signature : ecdsa-with-SHA256 30:44:02:20:38:F6:D1:17:2C:95:BB:21:35:0A:61:5E: C0:56:4B:B8:07:F4:93:48:B8:CB:A2:B7:9C:E2:23:98: F8:3A:00:CA:02:20:6E:EF:5B:A7:F1:47:BA:09:04:EF: 75:95:53:50:87:D8:87:D5:05:20:F4:45:54:6E:3B:8E: 09:6C:73:6B:A6:65
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-10-09T21:42:49+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication CA DV R36
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication Root R46
Valid from
2021-03-22T00:00:00+00:00
Expires
2036-03-21T23:59:59+00:00
Days remaining
3451
Serial (hex)
397A66CC2756362E0DAA87CA6EABE3B1
Signature
RSA-SHA384
Public key
RSA 3072

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

8C:54:C3:34:B6:6B:A4:E4:26:77:2A:F4:A3:F9:13:6C:19:A1:AE:C7:29:FD:B2:8C:53:5C:07:A5:A4:EF:22:E0
Certificate extensions & PEM
authorityKeyIdentifier
56:73:58:64:95:F9:92:1A:B0:12:2A:04:62:79:A1:40:15:88:21:49
subjectKeyIdentifier
68:C0:12:16:18:0E:AF:CE:F6:87:A6:32:57:A3:46:51:5D:CB:07:27
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE, pathlen:0
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: X509v3 Any Policy Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://crl.sectigo.com/SectigoPublicServerAuthenticationRootR46.crl
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoPublicServerAuthenticationRootR46.p7c OCSP - URI:http://ocsp.sectigo.com
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication Root R46
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication Root R46
Valid from
2021-03-22T00:00:00+00:00
Expires
2046-03-21T23:59:59+00:00
Days remaining
7103
Serial (hex)
758DFD8BAE7C0700FAA925A7E1C7AD14
Signature
RSA-SHA384
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

7B:B6:47:A6:2A:EE:AC:88:BF:25:7A:A5:22:D0:1F:FE:A3:95:E0:AB:45:C7:3F:93:F6:56:54:EC:38:F2:5A:06
Certificate extensions & PEM
subjectKeyIdentifier
56:73:58:64:95:F9:92:1A:B0:12:2A:04:62:79:A1:40:15:88:21:49
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
-----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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