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

mpg.de · 134.76.31.198:443

Verified

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

Subject
C=DE ST=Bayern L=Muenchen O=Max-Planck-Gesellschaft CN=www.mpg.de
Issuer
C=GR O=Hellenic Academic and Research Institutions CA CN=GEANT TLS RSA 1
Valid from
2025-11-07T16:12:09+00:00
Expires
2026-11-07T16:12:09+00:00
Days remaining
46
Serial (hex)
4992EF2DB3A38797B46131C7B273B0A2
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:www.mpg.de, DNS:mpg.de

SHA-256 fingerprint

9A:B2:A5:3F:09:4C:6E:79:75:48:3D:57:7C:31:AF:B5:AC:FC:BF:8B:E5:F2:03:F5:C3:48:FA:A4:BE:8C:13:DD
Certificate extensions & PEM
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:www.mpg.de, DNS:mpg.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
66:6B:48:C5:46:FA:A1:96:AB:EB:3D:7D:C6:C9:55:1B:C3:1C:96:48
keyUsage
Digital Signature, Key Encipherment
ct_precert_scts
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 : Nov 7 16:22:10.944 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:48:00:74:29:81:D3:E9:CD:61:64:29:9E: C3:0F:98:35:5C:F0:B7:3F:99:40:13:9D:D3:EF:78:D6: 8A:84:F5:23:02:20:0B:D6:12:52:C5:60:8A:17:8D:66: 33:A5:BF:47:68:D3:B1:30:32:36:72:03:C5:E5:70:A6: 17:A5:EB:22:6B:25 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E: F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7 Timestamp : Nov 7 16:22:11.025 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:2A:2B:C0:33:CE:73:58:9D:0F:C1:01:F8: 0C:08:55:03:A0:0B:67:1D:BB:69:68:C7:D9:4F:CE:EA: 67:DC:A2:DD:02:21:00:CE:43:7E:CC:CA:A6:D5:A4:65: BA:E7:67:15:E2:8F:51:CE:91:12:8E:78:66:C6:1E:95: BF:69:7F:80:DC:29:8C 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 : Nov 7 16:22:10.893 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:78:83:69:5E:6A:E3:9D:C9:E6:BC:E9:BE: F0:28:E4:C2:43:8D:BE:84:42:04:D1:16:58:DB:DD:BD: 0C:FD:58:77:02:20:1F:BE:24:6E:CF:E4:E8:D9:33:32: AC:DA:29:FF:F7:34:13:84:C2:42:8F:04:9F:8D:AF:FF: DD:6D:A0:14:A9:EE
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-22T11:04:56+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
4848
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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-----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
1073
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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