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

hs-mannheim.de · 141.19.1.171:443

Verified

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

Subject
C=DE ST=Baden-Wuerttemberg O=Technische Hochschule Mannheim CN=www.hs-mannheim.de
Issuer
C=GR O=Hellenic Academic and Research Institutions CA CN=GEANT TLS ECC 1
Valid from
2026-07-23T22:14:23+00:00
Expires
2027-02-07T22:14:22+00:00
Days remaining
131
Serial (hex)
78CAA157610DBF0C194F6160D868DBFC
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

DNS:www.hs-mannheim.de, DNS:www.th-mannheim.de, DNS:th-mannheim.de, DNS:hs-mannheim.de

SHA-256 fingerprint

1E:B7:76:07:C9:3E:25:09:14:D5:5B:C2:FB:97:CB:03:9B:59:D7:BF:55:8B:CA:CC:64:CC:BD:F8:3E:1B:AD:23
Certificate extensions & PEM
basicConstraints
CA:FALSE
authorityKeyIdentifier
E9:99:06:8D:17:1F:AB:FB:96:1A:5A:C8:5B:5E:5D:5E:EC:DA:9C:8F
authorityInfoAccess
CA Issuers - URI:http://crt.harica.gr/HARICA-GEANT-TLS-E1.cer
subjectAltName
DNS:www.hs-mannheim.de, DNS:www.th-mannheim.de, DNS:th-mannheim.de, DNS:hs-mannheim.de
certificatePolicies
Policy: 2.23.140.1.2.2 Policy: 0.4.0.2042.1.7 Policy: 1.3.6.1.4.1.26513.1.1.1.2
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl.harica.gr/HARICA-GEANT-TLS-E1.crl
subjectKeyIdentifier
30:A7:70:30:02:7F:CB:71:11:0A:28:5F:C0:BA:11:EC:32:5A:97:A9
keyUsage
Digital Signature
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Jul 23 22:24:24.617 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:6D:52:6E:7B:0E:74:E0:FB:97:0B:D4:6C: B0:DB:C7:37:4D:3B:A9:15:22:37:C5:65:EE:FB:8E:DC: 85:DE:7A:3E:02:21:00:E8:BF:7D:F3:DF:EA:AA:71:7A: BF:EA:8F:82:AD:E0:37:D6:A3:A9:A0:72:54:B8:C6:97: 63:06:68:97:F0:71:39 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 46:A2:39:67:C6:0D:B6:46:87:C6:6F:3D:F9:99:94:76: 93:A6:A6:11:20:84:57:D5:55:E7:E3:D0:A1:D9:B6:46 Timestamp : Jul 23 22:24:24.648 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:CE:61:F9:7D:9A:04:7F:82:C9:8F:91: 6B:3F:E5:68:CB:3C:B8:71:3E:AF:73:66:9B:97:50:48: 62:63:AD:3E:D1:02:21:00:E8:E4:C0:AC:40:3E:A1:D7: DF:45:40:2F:35:AE:B4:21:80:33:EB:79:8C:34:24:7C: 66:1E:C6:E9:12:09:2F:15 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 23 22:24:24.596 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:24:0F:CA:2D:A6:18:9A:9E:20:74:E2:DC: 7F:55:25:DE:56:34:52:C2:6E:D6:5C:71:C4:72:D8:B4: E8:6C:18:C2:02:21:00:E6:68:F9:6E:70:07:94:11:C1: 9B:2E:29:36:F9:A5:55:6F:48:30:C8:D8:9B:C1:B0:9C: 26:FD:8A:45:6F:F4:3D
-----BEGIN CERTIFICATE-----
MIIFHDCCBKKgAwIBAgIQeMqhV2ENvwwZT2Fg2Gjb/DAKBggqhkjOPQQDAzBgMQsw
CQYDVQQGEwJHUjE3MDUGA1UECgwuSGVsbGVuaWMgQWNhZGVtaWMgYW5kIFJlc2Vh
cmNoIEluc3RpdHV0aW9ucyBDQTEYMBYGA1UEAwwPR0VBTlQgVExTIEVDQyAxMB4X
DTI2MDcyMzIyMTQyM1oXDTI3MDIwNzIyMTQyMlowcDELMAkGA1UEBhMCREUxGzAZ
BgNVBAgMEkJhZGVuLVd1ZXJ0dGVtYmVyZzEnMCUGA1UECgweVGVjaG5pc2NoZSBI
b2Noc2NodWxlIE1hbm5oZWltMRswGQYDVQQDDBJ3d3cuaHMtbWFubmhlaW0uZGUw
djAQBgcqhkjOPQIBBgUrgQQAIgNiAAQy+QCRZ+8P38vyFDSGPVEwU5x4oR1aXUGl
VKsgLwJ1b8EXOEcGRmac+/NRWkjD/8+oiekzeqDVCdlpquzX1hFz5ACKUKW1fg8G
4IJa5QQKjOzmBf7WxIsKxk3Hqt8kOcajggMPMIIDCzAMBgNVHRMBAf8EAjAAMB8G
A1UdIwQYMBaAFOmZBo0XH6v7lhpayFteXV7s2pyPMEgGCCsGAQUFBwEBBDwwOjA4
BggrBgEFBQcwAoYsaHR0cDovL2NydC5oYXJpY2EuZ3IvSEFSSUNBLUdFQU5ULVRM
Uy1FMS5jZXIwUQYDVR0RBEowSIISd3d3LmhzLW1hbm5oZWltLmRlghJ3d3cudGgt
bWFubmhlaW0uZGWCDnRoLW1hbm5oZWltLmRlgg5ocy1tYW5uaGVpbS5kZTAtBgNV
HSAEJjAkMAgGBmeBDAECAjAIBgYEAI96AQcwDgYMKwYBBAGBzxEBAQECMB0GA1Ud
JQQWMBQGCCsGAQUFBwMCBggrBgEFBQcDATA9BgNVHR8ENjA0MDKgMKAuhixodHRw
Oi8vY3JsLmhhcmljYS5nci9IQVJJQ0EtR0VBTlQtVExTLUUxLmNybDAdBgNVHQ4E
FgQUMKdwMAJ/y3ERCihfwLoR7DJal6kwDgYDVR0PAQH/BAQDAgeAMIIBfwYKKwYB
BAHWeQIEAgSCAW8EggFrAWkAdgBgTJqven93XwHUBvySDciZ6wscffjJUhv6+hd3
O5eLyQAAAZ+RFHQpAAAEAwBHMEUCIG1SbnsOdOD7lwvUbLDbxzdNO6kVIjfFZe77
jtyF3no+AiEA6L9989/qqnF6v+qPgq3gN9ajqaByVLjGl2MGaJfwcTkAdwBGojln
xg22RofGbz35mZR2k6amESCEV9VV5+PQodm2RgAAAZ+RFHRIAAAEAwBIMEYCIQDO
Yfl9mgR/gsmPkWs/5WjLPLhxPq9zZpuXUEhiY60+0QIhAOjkwKxAPqHX30VALzWu
tCGAM+t5jDQkfGYexukSCS8VAHYARMK9DOkUDmSlyUoBkwpaobs1lw4A7hEWiWgq
HETXtWYAAAGfkRR0FAAABAMARzBFAiAkD8otphianiB04tx/VSXeVjRSwm7WXHHE
cti06GwYwgIhAOZo+W5wB5QRwZsuKTb5pVVvSDDI2JvBsJwm/YpFb/Q9MAoGCCqG
SM49BAMDA2gAMGUCMDgj7FaH1wyQxbih/1Hvuza+i6G754wT1UhP81wTAEfa5My6
j5p1OKk+e820ho85oAIxAP6f0Z8qt+cF/u3tisEgXG6vrGIJm1egYetWvghzPged
2MgcxabTRjNHU0cKe7XMdA==
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-29T12:08:15+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=GR O=Hellenic Academic and Research Institutions CA CN=GEANT TLS ECC 1
Issuer
C=GR O=Hellenic Academic and Research Institutions CA CN=HARICA TLS ECC Root CA 2021
Valid from
2025-01-03T11:14:21+00:00
Expires
2039-12-31T11:14:20+00:00
Days remaining
4840
Serial (hex)
42FDDCE1261607E1A5E6935A400161DD
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

6C:DF:0B:A1:71:1E:85:6D:22:8B:A0:0C:A0:4C:5C:1C:3D:79:94:4C:03:7B:71:3B:15:5A:4E:E4:B4:7E:C5:3C
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
authorityKeyIdentifier
C9:1B:53:81:12:FE:04:D5:16:D1:AA:BC:9A:6F:B7:A0:95:19:6E:CA
authorityInfoAccess
CA Issuers - URI:http://crt.harica.gr/HARICA-TLS-Root-2021-ECC.cer
certificatePolicies
Policy: X509v3 Any Policy
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl.harica.gr/HARICA-TLS-Root-2021-ECC.crl
subjectKeyIdentifier
E9:99:06:8D:17:1F:AB:FB:96:1A:5A:C8:5B:5E:5D:5E:EC:DA:9C:8F
keyUsage
Digital Signature, Certificate Sign, CRL Sign
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=GR O=Hellenic Academic and Research Institutions CA CN=HARICA TLS ECC Root CA 2021
Issuer
C=GR L=Athens O=Hellenic Academic and Research Institutions Cert. Authority CN=Hellenic Academic and Research Institutions ECC RootCA 2015
Valid from
2021-09-02T07:44:37+00:00
Expires
2029-08-31T07:44:36+00:00
Days remaining
1066
Serial (hex)
716027C8857A73542DEF516C1C2EEB0F
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

50:E2:7F:90:EB:6A:F4:95:B0:E6:EE:B6:55:CC:89:44:4C:27:D3:C9:5B:68:23:FA:02:AB:DC:95:F1:63:6A:E1
Certificate extensions & PEM
basicConstraints
CA:TRUE
authorityKeyIdentifier
B4:22:0B:82:99:24:01:0E:9C:BB:E4:0E:FD:BF:FB:97:20:93:99:2A
authorityInfoAccess
CA Issuers - URI:http://repo.harica.gr/certs/HaricaECCRootCA2015.crt
certificatePolicies
Policy: X509v3 Any Policy
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl.harica.gr/HaricaECCRootCA2015.crl
subjectKeyIdentifier
C9:1B:53:81:12:FE:04:D5:16:D1:AA:BC:9A:6F:B7:A0:95:19:6E:CA
keyUsage
Digital Signature, Certificate Sign, CRL Sign
-----BEGIN CERTIFICATE-----
MIIDezCCAwGgAwIBAgIQcWAnyIV6c1Qt71FsHC7rDzAKBggqhkjOPQQDAzCBqjEL
MAkGA1UEBhMCR1IxDzANBgNVBAcTBkF0aGVuczFEMEIGA1UEChM7SGVsbGVuaWMg
QWNhZGVtaWMgYW5kIFJlc2VhcmNoIEluc3RpdHV0aW9ucyBDZXJ0LiBBdXRob3Jp
dHkxRDBCBgNVBAMTO0hlbGxlbmljIEFjYWRlbWljIGFuZCBSZXNlYXJjaCBJbnN0
aXR1dGlvbnMgRUNDIFJvb3RDQSAyMDE1MB4XDTIxMDkwMjA3NDQzN1oXDTI5MDgz
MTA3NDQzNlowbDELMAkGA1UEBhMCR1IxNzA1BgNVBAoMLkhlbGxlbmljIEFjYWRl
bWljIGFuZCBSZXNlYXJjaCBJbnN0aXR1dGlvbnMgQ0ExJDAiBgNVBAMMG0hBUklD
QSBUTFMgRUNDIFJvb3QgQ0EgMjAyMTB2MBAGByqGSM49AgEGBSuBBAAiA2IABDgI
/rGgltJ6rK9JOtDA4MM7KKrxcm1lAEeIhPyaJmuqS7psBAqIXhfyVYf8MLA04jRY
VxqEU+kw2anylnTDUR9YSTHMmE5gEYd103KUkE+bECUqqHgtvpBBWJAVcqeht6OC
AScwggEjMA8GA1UdEwEB/wQFMAMBAf8wHwYDVR0jBBgwFoAUtCILgpkkAQ6cu+QO
/b/7lyCTmSowTwYIKwYBBQUHAQEEQzBBMD8GCCsGAQUFBzAChjNodHRwOi8vcmVw
by5oYXJpY2EuZ3IvY2VydHMvSGFyaWNhRUNDUm9vdENBMjAxNS5jcnQwEQYDVR0g
BAowCDAGBgRVHSAAMB0GA1UdJQQWMBQGCCsGAQUFBwMCBggrBgEFBQcDATA9BgNV
HR8ENjA0MDKgMKAuhixodHRwOi8vY3JsLmhhcmljYS5nci9IYXJpY2FFQ0NSb290
Q0EyMDE1LmNybDAdBgNVHQ4EFgQUyRtTgRL+BNUW0aq8mm+3oJUZbsowDgYDVR0P
AQH/BAQDAgGGMAoGCCqGSM49BAMDA2gAMGUCMQCPc45gQV6pCkMR4px3k+YnF0Mo
DpXQ0+0lWz7fnplqgHn+qHmoKrE5Y/bcWucG6QQCMB/DIYjUTGAl5j07G7ZIuK3Q
ehx68VPXTwvJ9tLbh9A9SkiBmJGpiHL7Rzfxa5CptQ==
-----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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