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

bht-berlin.de · 141.64.5.76:443

Verified

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

Subject
C=DE ST=Berlin O=Berliner Hochschule fuer Technik CN=www.bht-berlin.de
Issuer
C=GR O=Hellenic Academic and Research Institutions CA CN=GEANT TLS ECC 1
Valid from
2026-09-14T07:40:38+00:00
Expires
2027-04-01T07:40:37+00:00
Days remaining
190
Serial (hex)
75647B9BE0B502D172B8810257CEACBF
Signature
ecdsa-with-SHA384
Public key
EC 256 prime256v1

Subject alternative names (SAN)

DNS:www.bht-berlin.de, DNS:www.tfh-berlin.de, DNS:bht-hochschule.de, DNS:www.beuth-hochschule.de, DNS:beuth-hochschule.de, DNS:www.bht-hochschule.de, DNS:bht-berlin.de, DNS:tfh-berlin.de

SHA-256 fingerprint

62:F4:F3:B6:8E:4E:D7:C2:04:D3:D6:00:09:DD:AD:66:FA:85:FC:8F:49:DD:B0:B4:73:89:95:6F:4A:69:9E:D6
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.bht-berlin.de, DNS:www.tfh-berlin.de, DNS:bht-hochschule.de, DNS:www.beuth-hochschule.de, DNS:beuth-hochschule.de, DNS:www.bht-hochschule.de, DNS:bht-berlin.de, DNS:tfh-berlin.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
60:5C:92:DE:A9:4C:02:38:A0:31:90:6D:05:76:A9:61:AA:DD:D0:4F
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 : Sep 14 07:50:39.791 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:44:85:81:77:8E:52:B8:AB:B5:40:32:03: A3:A7:C7:10:FA:73:44:B6:35:7C:81:38:96:15:4A:19: 50:B0:ED:95:02:20:21:B9:CF:09:AB:5B:75:BB:44:ED: E0:30:01:D1:96:C0:A5:C2:56:E2:E0:25:09:AD:8D:1C: BD:1F:8F:49:C7:E1 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 : Sep 14 07:50:39.823 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:C7:7F:6F:00:9A:EA:04:88:DB:C2:7E: D0:8C:17:FA:75:3E:E6:82:1B:38:E9:CB:43:C3:10:0D: 94:19:B2:07:96:02:20:05:4F:43:2C:56:73:95:11:CB: FD:A1:6B:EF:98:30:A8:A4:31:6C:BC:03:03:A1:1A:DE: 31:42:91:A1:F8:FB:22 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 : Sep 14 07:50:39.774 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:31:85:02:4B:61:56:11:FE:A7:2D:20:CC: E1:8F:97:CB:F7:C6:FC:F1:98:77:26:67:32:2A:83:4F: 55:68:98:A7:02:21:00:F7:33:6B:6D:01:10:C0:F7:DD: 74:B8:08:DB:51:1C:5A:41:13:41:14:D2:09:AA:20:B3: 2F:E6:60:65:40:20:16
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-22T09:25:12+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
4848
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
1073
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-----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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

Registration / WHOIS →DNS records →