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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

uc.pt · 193.137.200.165:443

Verified

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

Subject
C=PT L=Coimbra O=Universidade de Coimbra CN=uc.pt
Issuer
C=GR O=Hellenic Academic and Research Institutions CA CN=GEANT TLS ECC 1
Valid from
2026-02-03T16:46:07+00:00
Expires
2027-02-03T16:46:07+00:00
Days remaining
96
Serial (hex)
4A339A580628E3D59C64A8C65DA3A2A7
Signature
ecdsa-with-SHA384
Public key
EC 256 prime256v1

Subject alternative names (SAN)

DNS:uc.pt, DNS:www.uc.pt

SHA-256 fingerprint

AB:6A:D0:36:84:DF:44:52:C2:EA:D9:1D:45:A6:C8:7B:94:11:BB:F1:35:99:E4:95:5F:C6:D9:4F:CF:7C:60:1C
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 OCSP - URI:http://ocsp-tls.harica.gr
subjectAltName
DNS:uc.pt, DNS:www.uc.pt
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
A4:23:7A:31:B8:41:8E:F1:47:D5:43:7F:EA:7C:21:83:2D:3F:E0:E4
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 : Feb 3 16:56:09.069 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:96:78:76:CE:55:C5:56:61:E2:DD:31: 16:61:87:87:22:36:E1:BB:EF:41:12:B5:38:D8:7B:8A: 8E:57:81:51:29:02:20:52:02:D2:CF:74:7A:36:9C:5C: 80:43:1C:1D:12:D4:76:81:DD:B0:03:B5:F2:C7:52:E3: F1:76:06:FD:85:BB:0C 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 : Feb 3 16:56:09.057 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:38:F2:B0:62:DB:5D:00:82:F7:A7:6D:AB: CD:F3:10:79:26:41:6B:A6:DA:9A:DA:E2:BD:9F:FC:F3: 16:0E:1D:25:02:21:00:BB:23:EB:2A:30:0B:F8:59:72: A8:EE:FC:B0:C5:4C:16:0F:B3:59:BC:D6:D7:6C:6C:F0: 62:29:2C:03:22:95:2E 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 : Feb 3 16:56:09.017 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:2D:12:05:72:2F:74:07:30:47:7F:6D:1E: 67:C3:E0:96:CA:A0:3E:D7:CD:26:6B:CA:40:44:75:4B: 03:30:1D:90:02:20:67:6F:C7:10:68:A8:F9:1B:57:13: 67:01:1F:61:5B:D7:65:23:CB:F7:5A:05:3D:AD:7D:7F: 71:3B:34:D0:C0:64
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-30T09:42:38+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
4810
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
1035
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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