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

simgroep.nl · 52.51.241.7:443

Verified

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

Subject
C=NL L=Capelle aan den IJssel O=Shift2 B.V. CN=*.simgroep.nl
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Valid from
2026-06-04T00:00:00+00:00
Expires
2026-12-19T23:59:59+00:00
Days remaining
40
Serial (hex)
02DDB12CB643CA72C6EB93EAC29AF0F6
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.simgroep.nl, DNS:simgroep.nl

SHA-256 fingerprint

D7:EA:C6:C6:9C:0C:9C:82:16:F8:AB:C0:CA:8C:36:58:9B:93:CF:E1:0A:EB:10:69:03:E1:6D:A9:14:DE:44:74
Certificate extensions & PEM
authorityKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
subjectKeyIdentifier
7C:39:73:A0:5E:E7:F7:45:71:DE:D4:52:B6:DF:E6:BE:9C:49:26:B7
subjectAltName
DNS:*.simgroep.nl, DNS:simgroep.nl
certificatePolicies
Policy: 2.23.140.1.2.2 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.thawte.com/ThawteTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.thawte.com CA Issuers - URI:http://cacerts.thawte.com/ThawteTLSRSACAG1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Jun 4 09:18:58.599 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:A2:9D:32:8D:D4:F6:33:3E:2F:39:C9: 98:F4:D7:00:73:2B:A6:BC:8E:64:48:A9:4C:AB:3B:66: 02:76:BB:96:25:02:21:00:E8:F3:89:1C:4D:7E:A2:D2: B5:4D:4A:E7:35:F0:13:7C:A2:F9:07:54:AB:64:35:4D: 10:16:9A:BB:FB:9D:5A:75 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D8:09:55:3B:94:4F:7A:FF:C8:16:19:6F:94:4F:85:AB: B0:F8:FC:5E:87:55:26:0F:15:D1:2E:72:BB:45:4B:14 Timestamp : Jun 4 09:18:58.634 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:B9:FB:57:39:01:CB:65:5D:F0:41:20: 67:51:B7:C2:0C:F8:ED:66:8B:86:4E:FF:5C:1F:32:2A: BF:AE:07:A6:D3:02:20:5E:F0:DD:B5:3E:7F:F0:DA:4D: 5B:BC:62:60:EB:A9:72:15:69:0E:F3:8D:84:7B:43:E3: 71:C0:B7:36:98:82:E1 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65: 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8 Timestamp : Jun 4 09:18:58.612 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:4D:31:E1:CF:8B:6C:3B:79:6E:34:91:E8: F1:DA:EE:10:9E:74:84:18:9A:1E:90:86:3C:DC:2D:EC: 27:0B:DD:CB:02:20:17:39:06:D5:5D:96:00:1F:61:96: 5F:00:1F:33:26:C7:80:70:20:8E:65:1C:AB:C1:39:9C: C4:B9:1D:9E:A9:D7
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-11-09T20:11:59+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2017-11-02T12:24:25+00:00
Expires
2027-11-02T12:24:25+00:00
Days remaining
357
Serial (hex)
090EE8C5DE5BFA62D2AE2FF7097C4857
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

4B:CC:5E:23:4F:E8:1E:DE:4E:AF:88:3A:A1:9C:31:33:5B:0B:26:E8:5E:06:6B:99:45:E4:CB:61:53:EB:20:C2
Certificate extensions & PEM
subjectKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
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
4084
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.

View certificate JSON

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