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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

mailng.gatworks.de · 213.164.158.42:443

Verified

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

Subject
CN=mailng.gatworks.de
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=RapidSSL TLS RSA CA G1
Valid from
2026-06-02T00:00:00+00:00
Expires
2026-12-17T23:59:59+00:00
Days remaining
41
Serial (hex)
08ED3D4605DF5E756EB9E002EE399203
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:mailng.gatworks.de

SHA-256 fingerprint

E2:28:89:50:7F:52:91:93:37:C5:3A:D8:A9:5A:9D:99:4A:69:BC:1D:26:A0:18:EB:E4:A7:71:92:D4:32:8C:B2
Certificate extensions & PEM
authorityKeyIdentifier
0C:DB:6C:82:49:0F:4A:67:0A:B8:14:EE:7A:C4:48:52:88:EB:56:38
subjectKeyIdentifier
94:27:87:91:4F:BD:81:C3:A2:37:2F:B8:4A:D3:27:FC:E4:4F:82:BB
subjectAltName
DNS:mailng.gatworks.de
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.rapidssl.com/RapidSSLTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.rapidssl.com CA Issuers - URI:http://cacerts.rapidssl.com/RapidSSLTLSRSACAG1.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 2 07:19:02.022 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:0C:DB:A3:7E:3E:DF:F7:D2:5D:C5:C5:77: 6F:E2:F2:CD:E0:8E:75:A5:9D:8D:F7:E2:AE:E4:38:02: 35:70:A1:52:02:21:00:D7:91:B3:9E:7E:B6:DF:49:D6: FB:96:D1:41:EE:90:CE:37:5D:70:B6:6E:58:55:72:B4: 78:59:8E:40:21:7C:BB Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : Jun 2 07:19:01.979 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:42:FF:07:45:63:3C:12:8E:93:96:08:8A: B7:64:BA:CC:4E:73:6A:D9:50:7F:44:92:70:F5:A5:B2: 4D:6D:01:1C:02:20:6D:AE:7F:C1:43:DD:46:64:C0:80: 06:B3:B0:D9:0B:81:AA:2B:A4:CE:67:5C:D2:01:2C:59: E5:50:50:19:D7:0A 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 2 07:19:02.038 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:36:70:27:4E:34:BC:B7:C7:5A:D5:3F:B4: 77:19:25:85:B2:B2:B4:16:3B:1C:19:55:3E:99:93:3B: E5:4D:9D:0E:02:21:00:93:C0:65:16:6D:FC:54:36:C3: 97:71:E7:9C:AA:DE:3F:A6:13:7D:7F:F3:95:7C:67:E3: F8:66:9C:CA:8F:10:D5
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-11-06T10:02:31+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=RapidSSL TLS RSA CA G1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2017-11-02T12:24:33+00:00
Expires
2027-11-02T12:24:33+00:00
Days remaining
361
Serial (hex)
0B259422CED9812A15A04E99528A0EFA
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

44:22:E9:63:EE:53:CD:58:CC:9F:85:CD:40:BF:5F:FE:C0:09:5F:DF:1A:15:45:35:66:1C:1C:06:BC:AD:C6:9B
Certificate extensions & PEM
subjectKeyIdentifier
0C:DB:6C:82:49:0F:4A:67:0A:B8:14:EE:7A:C4:48:52:88:EB:56:38
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: 2.16.840.1.114412.1.1 CPS: https://www.digicert.com/CPS Policy: 2.16.840.1.114412.1.2 Policy: 2.23.140.1.2.1 Policy: 2.23.140.1.2.2
-----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
4088
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-----
MIIDjjCCAnagAwIBAgIQAzrx5qcRqaC7KGSxHQn65TANBgkqhkiG9w0BAQsFADBh
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
d3cuZGlnaWNlcnQuY29tMSAwHgYDVQQDExdEaWdpQ2VydCBHbG9iYWwgUm9vdCBH
MjAeFw0xMzA4MDExMjAwMDBaFw0zODAxMTUxMjAwMDBaMGExCzAJBgNVBAYTAlVT
MRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxGTAXBgNVBAsTEHd3dy5kaWdpY2VydC5j
b20xIDAeBgNVBAMTF0RpZ2lDZXJ0IEdsb2JhbCBSb290IEcyMIIBIjANBgkqhkiG
9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuzfNNNx7a8myaJCtSnX/RrohCgiN9RlUyfuI
2/Ou8jqJkTx65qsGGmvPrC3oXgkkRLpimn7Wo6h+4FR1IAWsULecYxpsMNzaHxmx
1x7e/dfgy5SDN67sH0NO3Xss0r0upS/kqbitOtSZpLYl6ZtrAGCSYP9PIUkY92eQ
q2EGnI/yuum06ZIya7XzV+hdG82MHauVBJVJ8zUtluNJbd134/tJS7SsVQepj5Wz
tCO7TG1F8PapspUwtP1MVYwnSlcUfIKdzXOS0xZKBgyMUNGPHgm+F6HmIcr9g+UQ
vIOlCsRnKPZzFBQ9RnbDhxSJITRNrw9FDKZJobq7nMWxM4MphQIDAQABo0IwQDAP
BgNVHRMBAf8EBTADAQH/MA4GA1UdDwEB/wQEAwIBhjAdBgNVHQ4EFgQUTiJUIBiV
5uNu5g/6+rkS7QYXjzkwDQYJKoZIhvcNAQELBQADggEBAGBnKJRvDkhj6zHd6mcY
1Yl9PMWLSn/pvtsrF9+wX3N3KjITOYFnQoQj8kVnNeyIv/iPsGEMNKSuIEyExtv4
NeF22d+mQrvHRAiGfzZ0JFrabA0UWTW98kndth/Jsw1HKj2ZL7tcu7XUIOGZX1NG
Fdtom/DzMNU+MeKNhJ7jitralj41E6Vf8PlwUHBHQRFXGU7Aj64GxJUTFy8bJZ91
8rGOmaFvE7FBcf6IKshPECBV1/MUReXgRPTqh5Uykw7+U0b6LJ3/iyK5S9kJRaTe
pLiaWN0bfVKfjllDiIGknibVb63dDcY3fe0Dkhvld1927jyNxF1WW6LZZm6zNTfl
MrY=
-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

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