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

h-da.de · 141.100.10.111:443

Verified

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

Subject
C=DE ST=Hessen O=Hochschule Darmstadt CN=*.h-da.de
Issuer
C=GR O=Hellenic Academic and Research Institutions CA CN=GEANT TLS RSA 1
Valid from
2026-01-15T12:05:32+00:00
Expires
2027-01-15T12:05:32+00:00
Days remaining
94
Serial (hex)
62594CF1B5932AD9315E553CC67501ED
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.h-da.de, DNS:h-da.de, DNS:*.weiterbildung-darmstadt.de, DNS:weiterbildung-darmstadt.de, DNS:*.darmstadt-business-school.de, DNS:darmstadt-business-school.de, DNS:*.gftn.de, DNS:gftn.de, DNS:*.eut-plus.eu, DNS:eut-plus.eu, DNS:*.yubizz-darmstadt.de, DNS:yubizz-darmstadt.de, DNS:*.eut-plus.education, DNS:eut-plus.education, DNS:*.planen-bauen-betreiben.de, DNS:planen-bauen-betreiben.de, DNS:*.eit.h-da.de, DNS:eit.h-da.de, DNS:*.hej-mint.com, DNS:hej-mint.com, DNS:*.hej-mint.de, DNS:hej-mint.de, DNS:*.hejmint.com, DNS:hejmint.com, DNS:*.haw-hessen.de, DNS:haw-hessen.de, DNS:*.eutplus.de, DNS:eutplus.de, DNS:*.eutplus.eu, DNS:eutplus.eu, DNS:*.eut.education, DNS:eut.education, DNS:*.ibwl-darmstadt.de, DNS:ibwl-darmstadt.de, DNS:*.hejmint.de, DNS:hejmint.de, DNS:*.promotionszentrum-soziale-arbeit.de, DNS:promotionszentrum-soziale-arbeit.de, DNS:*.univ-tech.de, DNS:univ-tech.de, DNS:*.yubizz.com, DNS:yubizz.com, DNS:*.weiterbildung-in-darmstadt.de, DNS:weiterbildung-in-darmstadt.de, DNS:*.management-darmstadt.de, DNS:management-darmstadt.de, DNS:*.duales-studienzentrum.de, DNS:duales-studienzentrum.de, DNS:*.ibwl.de, DNS:ibwl.de, DNS:*.mba-darmstadt.de, DNS:mba-darmstadt.de, DNS:*.fbmd.h-da.de, DNS:fbmd.h-da.de, DNS:*.h-da.net, DNS:h-da.net, DNS:*.fbi.h-da.de, DNS:fbi.h-da.de, DNS:*.eut-plus.de, DNS:eut-plus.de, DNS:*.h-da.com, DNS:h-da.com, DNS:*.promotionszentrum-angewandte-informatik.de, DNS:promotionszentrum-angewandte-informatik.de, DNS:*.eutplus.education, DNS:eutplus.education, DNS:*.bachelor-darmstadt.de, DNS:bachelor-darmstadt.de, DNS:*.master-darmstadt.de, DNS:master-darmstadt.de, DNS:*.bwl-darmstadt.de, DNS:bwl-darmstadt.de, DNS:*.studium-darmstadt.de, DNS:studium-darmstadt.de, DNS:*.studieren-im-odenwald.de, DNS:studieren-im-odenwald.de, DNS:*.yubizz.de, DNS:yubizz.de, DNS:*.plastics-for-future.de, DNS:plastics-for-future.de, DNS:*.itda.h-da.de, DNS:itda.h-da.de

SHA-256 fingerprint

47:20:F4:5B:1F:FB:25:E4:87:D6:23:BA:12:68:16:E1:19:61:B5:D6:17:C5:6D:21:DE:61:78:93:4B:C6:60:49
Certificate extensions & PEM
basicConstraints
CA:FALSE
authorityKeyIdentifier
86:01:72:3F:8C:A9:70:E2:31:06:53:16:CE:01:5F:5B:79:C8:3C:3B
authorityInfoAccess
CA Issuers - URI:http://crt.harica.gr/HARICA-GEANT-TLS-R1.cer OCSP - URI:http://ocsp-tls.harica.gr
subjectAltName
DNS:*.h-da.de, DNS:h-da.de, DNS:*.weiterbildung-darmstadt.de, DNS:weiterbildung-darmstadt.de, DNS:*.darmstadt-business-school.de, DNS:darmstadt-business-school.de, DNS:*.gftn.de, DNS:gftn.de, DNS:*.eut-plus.eu, DNS:eut-plus.eu, DNS:*.yubizz-darmstadt.de, DNS:yubizz-darmstadt.de, DNS:*.eut-plus.education, DNS:eut-plus.education, DNS:*.planen-bauen-betreiben.de, DNS:planen-bauen-betreiben.de, DNS:*.eit.h-da.de, DNS:eit.h-da.de, DNS:*.hej-mint.com, DNS:hej-mint.com, DNS:*.hej-mint.de, DNS:hej-mint.de, DNS:*.hejmint.com, DNS:hejmint.com, DNS:*.haw-hessen.de, DNS:haw-hessen.de, DNS:*.eutplus.de, DNS:eutplus.de, DNS:*.eutplus.eu, DNS:eutplus.eu, DNS:*.eut.education, DNS:eut.education, DNS:*.ibwl-darmstadt.de, DNS:ibwl-darmstadt.de, DNS:*.hejmint.de, DNS:hejmint.de, DNS:*.promotionszentrum-soziale-arbeit.de, DNS:promotionszentrum-soziale-arbeit.de, DNS:*.univ-tech.de, DNS:univ-tech.de, DNS:*.yubizz.com, DNS:yubizz.com, DNS:*.weiterbildung-in-darmstadt.de, DNS:weiterbildung-in-darmstadt.de, DNS:*.management-darmstadt.de, DNS:management-darmstadt.de, DNS:*.duales-studienzentrum.de, DNS:duales-studienzentrum.de, DNS:*.ibwl.de, DNS:ibwl.de, DNS:*.mba-darmstadt.de, DNS:mba-darmstadt.de, DNS:*.fbmd.h-da.de, DNS:fbmd.h-da.de, DNS:*.h-da.net, DNS:h-da.net, DNS:*.fbi.h-da.de, DNS:fbi.h-da.de, DNS:*.eut-plus.de, DNS:eut-plus.de, DNS:*.h-da.com, DNS:h-da.com, DNS:*.promotionszentrum-angewandte-informatik.de, DNS:promotionszentrum-angewandte-informatik.de, DNS:*.eutplus.education, DNS:eutplus.education, DNS:*.bachelor-darmstadt.de, DNS:bachelor-darmstadt.de, DNS:*.master-darmstadt.de, DNS:master-darmstadt.de, DNS:*.bwl-darmstadt.de, DNS:bwl-darmstadt.de, DNS:*.studium-darmstadt.de, DNS:studium-darmstadt.de, DNS:*.studieren-im-odenwald.de, DNS:studieren-im-odenwald.de, DNS:*.yubizz.de, DNS:yubizz.de, DNS:*.plastics-for-future.de, DNS:plastics-for-future.de, DNS:*.itda.h-da.de, DNS:itda.h-da.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-R1.crl
subjectKeyIdentifier
E7:AC:84:DE:8F:1C:E7:CC:CA:F5:50:11:1F:B7:3C:53:47:DF:39:1C
keyUsage
Digital Signature, Key Encipherment
ct_precert_scts
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 : Jan 15 12:15:33.776 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:FC:60:26:F0:BB:A5:08:91:48:EE:62: 15:0E:EC:2F:6D:80:A9:9F:95:84:E4:C2:B5:39:B3:60: 97:0A:2A:7B:8A:02:21:00:DD:51:5F:42:E4:A3:E5:16: 10:61:7D:0C:45:0D:75:F6:CB:67:48:BC:B8:11:16:0C: 23:69:10:A2:71:DA:CF:B8 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 : Jan 15 12:15:33.733 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:57:DF:D4:4C:8A:07:5F:16:0B:40:9B:0B: 48:35:74:59:45:65:7C:84:E5:83:D6:47:ED:17:1F:6E: C5:8F:26:97:02:20:79:4D:25:96:4D:4D:FB:2E:FD:FA: F1:CD:2B:A8:1F:D7:4F:9C:FC:1C:67:B4:59:03:2B:25: 44:56:3F:70:88:33 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 : Jan 15 12:15:33.838 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:81:81:B8:26:80:A5:18:19:FA:2B:56: 27:3F:81:39:36:43:DB:73:83:D9:10:B1:2C:AC:DC:3B: F0:8E:11:89:7F:02:20:70:F8:9D:75:6A:FD:35:CD:7A: 5B:6E:1A:B0:7F:96:F5:8E:A7:32:DF:84:16:A6:08:7F: 5D:14:98:66:A1:B2:2D
-----BEGIN CERTIFICATE-----
MIIM3DCCC0SgAwIBAgIQYllM8bWTKtkxXlU8xnUB7TANBgkqhkiG9w0BAQsFADBg
MQswCQYDVQQGEwJHUjE3MDUGA1UECgwuSGVsbGVuaWMgQWNhZGVtaWMgYW5kIFJl
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zLEPjVWTe7anHNlFKOCZpN2tVqyRBdMz4HXx6TRfrxY=
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-13T05:02:48+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=GR O=Hellenic Academic and Research Institutions CA CN=GEANT TLS RSA 1
Issuer
C=GR O=Hellenic Academic and Research Institutions CA CN=HARICA TLS RSA Root CA 2021
Valid from
2025-01-03T11:15:00+00:00
Expires
2039-12-31T11:14:59+00:00
Days remaining
4827
Serial (hex)
14D57BF3692228219A5567FA91651B22
Signature
RSA-SHA256
Public key
RSA 3072

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

5B:67:8D:C4:40:95:A5:28:95:B6:3B:31:F2:72:27:F4:B3:6C:3E:34:74:91:BF:2B:FA:69:18:37:A5:FB:8C:79
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
authorityKeyIdentifier
0A:48:23:A6:60:A4:92:0A:33:EA:93:5B:C5:57:EA:25:4D:BD:12:EE
authorityInfoAccess
CA Issuers - URI:http://crt.harica.gr/HARICA-TLS-Root-2021-RSA.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-RSA.crl
subjectKeyIdentifier
86:01:72:3F:8C:A9:70:E2:31:06:53:16:CE:01:5F:5B:79:C8:3C:3B
keyUsage
Digital Signature, Certificate Sign, CRL Sign
-----BEGIN CERTIFICATE-----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BAMCAYYwDQYJKoZIhvcNAQELBQADggIBABkssjQzYrOo4GMsKegaChP16yNe6Sck
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ef+fUfmXrFcgBMcMbtfDb9dubFKNZZxo5nAXiqhFMOIyByag3H+tOTuH8zuId9pH
RDsUpAIHJ9/W2WBfLcKav7IKRlNBRD/sPBy903J9WHPKwl8kQSDA+aa7XCYk7bJt
Eyf+7GM9F5cZ7+YyknXqnv/rtQEkTKZdQo5Us18VFe9qqj94tXbLdk7PejJYNB4O
Zlli44Ld7rtqfFlUych7gIxFOmiyxMQQYrYmUi+74lEZvfoNhuref0CupuKpz6O3
dLv6kO9T10uNdDBoBQTkge3UzHafTIe3R2o3ujXKUGPwyc9m7/FETyKLUCwSU/5O
AVOeBCU8QtkKKjM8AmbpKpe3pHWcyq3R7B3LmIALkMPTydyDfxen65IDqREbVq8N
xjhkJThUz40JqOlN6uqKqeDISj/IoucYwsqW24AlO7ZzNmohQmMi8ep23H4hBSh0
GBTe2XvkuzaNf92syK8l2HzO+13GLCjzYLTPvXTO9UpK8DGyfGZOuamuwbAnbNpE
3RfjV9IaUQGJ
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=GR O=Hellenic Academic and Research Institutions CA CN=HARICA TLS RSA Root CA 2021
Issuer
C=GR L=Athens O=Hellenic Academic and Research Institutions Cert. Authority CN=Hellenic Academic and Research Institutions RootCA 2015
Valid from
2021-09-02T07:41:55+00:00
Expires
2029-08-31T07:41:54+00:00
Days remaining
1053
Serial (hex)
2A6086D4D4DE45C95E4B98FBBF2FBF26
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

4A:CD:8D:C6:02:0A:54:5A:85:89:43:A5:53:B5:E0:F3:FC:5B:85:9A:EA:17:46:65:0D:69:CF:12:10:F9:56:D8
Certificate extensions & PEM
basicConstraints
CA:TRUE
authorityKeyIdentifier
71:15:67:C8:C8:C9:BD:75:5D:72:D0:38:18:6A:9D:F3:71:24:54:0B
authorityInfoAccess
CA Issuers - URI:http://repo.harica.gr/certs/HaricaRootCA2015.crt
certificatePolicies
Policy: X509v3 Any Policy
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl.harica.gr/HaricaRootCA2015.crl
subjectKeyIdentifier
0A:48:23:A6:60:A4:92:0A:33:EA:93:5B:C5:57:EA:25:4D:BD:12:EE
keyUsage
Digital Signature, Certificate Sign, CRL Sign
-----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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