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

regoc.srce.hr · 161.53.2.69:443

Verified

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

Subject
C=HR L=Zagreb O=Sveučilište u Zagrebu - Sveučilišni računski centar CN=regoc.srce.hr
Issuer
C=GR O=Hellenic Academic and Research Institutions CA CN=GEANT TLS ECC 1
Valid from
2026-09-17T09:27:34+00:00
Expires
2027-04-04T09:27:33+00:00
Days remaining
186
Serial (hex)
3D24E0EFDFE701E238FAD004C90C23A8
Signature
ecdsa-with-SHA384
Public key
EC 256 prime256v1

Subject alternative names (SAN)

DNS:regoc.srce.hr

SHA-256 fingerprint

E4:EC:68:FB:F2:D8:AD:D8:E8:30:41:28:60:D0:30:4B:6F:24:EF:65:E0:C5:5F:E2:59:7B:C5:99:52:D5:CC:72
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:regoc.srce.hr
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
7D:D5:53:53:BA:56:B6:36:60:7E:48:0B:0D:E3:9E:EF:1C:4E:95: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 : Sep 17 09:37:36.305 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:E7:B2:C8:9D:00:AF:C3:98:E1:58:A9: 90:D0:0B:37:F0:F4:75:84:D4:E4:8C:B0:4C:E0:22:2F: 5B:1C:20:64:12:02:20:69:2C:96:92:6F:B2:6A:B1:10: 88:B5:99:E8:3C:9E:B1:D5:75:FC:AA:34:C8:A6:64:52: DA:59:12:8F:AC:36:9E 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 17 09:37:36.328 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:C1:9B:00:22:7B:8C:30:FA:89:14:03: 4A:3C:E6:43:20:C5:2F:8A:C2:98:2E:53:0D:00:0C:D6: 68:62:53:B0:DD:02:21:00:D6:98:CD:24:63:0D:C0:57: 21:00:31:17:20:E3:50:CC:B8:44:50:C7:3B:2E:1E:7D: 97:31:77:CD:F7:58:30:65 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 17 09:37:36.280 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:CF:60:D5:2E:A2:3F:EF:D1:24:50:4A: 5D:EE:C2:39:0E:47:48:0B:B3:53:20:B9:85:3C:1A:31: 68:45:1B:DA:BE:02:21:00:84:33:40:D3:93:29:0E:71: 14:32:5B:FB:61:84:15:1A:F4:45:7E:38:61:01:86:8B: 8B:86:0C:A5:10:0D:ED:16
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-30T03:39:04+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-----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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 →