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

TLSv1.2

technopol.sk · 194.1.185.122:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed

Certificate verification failed

Subject
CN=www.technopol.sk
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=GeoTrust TLS RSA CA G1
Valid from
2026-10-23T00:00:00+00:00
Expires
2027-03-05T23:59:59+00:00
Days remaining
111
Serial (hex)
09A264D5828B87D992991695A75B70DE
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:www.technopol.sk, DNS:technopol.eu, DNS:technopol.sk, DNS:www.technopol.eu

SHA-256 fingerprint

E4:E1:D6:54:87:08:6D:30:2D:E6:10:38:6D:5B:00:FE:EC:A4:AB:95:2F:BF:CE:0E:68:3E:84:B9:F6:30:37:7E
Certificate extensions & PEM
authorityKeyIdentifier
94:4F:D4:5D:8B:E4:A4:E2:A6:80:FE:FD:D8:F9:00:EF:A3:BE:02:57
subjectKeyIdentifier
CB:4F:6C:84:99:2B:A3:E8:14:E6:3A:88:90:8E:6F:75:1D:C9:B0:14
subjectAltName
DNS:www.technopol.sk, DNS:technopol.eu, DNS:technopol.sk, DNS:www.technopol.eu
certificatePolicies
Policy: 2.23.140.1.2.1 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://cdp.geotrust.com/GeoTrustTLSRSACAG1-2.crl
authorityInfoAccess
OCSP - URI:http://status.geotrust.com CA Issuers - URI:http://cacerts.geotrust.com/GeoTrustTLSRSACAG1.crt
basicConstraints
CA:FALSE
ct_precert_scts
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 : Oct 23 08:00:38.093 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:A0:6C:AE:CC:D9:86:6A:D9:7E:A8:E2: 5B:71:1F:F0:7F:27:18:E9:41:B8:A2:CB:98:07:33:F6: 07:7C:D9:7D:8A:02:21:00:F2:3C:20:4F:1C:AD:47:1E: D7:D7:08:5D:F2:A4:7F:19:4C:EB:B5:86:95:CC:E2:B4: 52:C0:63:14:78:CD:EC:D5 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 : Oct 23 08:00:38.249 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:A8:58:0E:1D:C6:25:B3:E6:86:4F:4E: A4:DC:73:C6:AC:39:F1:71:AA:63:95:36:89:C1:5A:78: 8A:82:EA:A4:28:02:21:00:DD:D8:9F:B0:AB:46:A3:41: 8A:0C:53:9B:F3:4D:A3:36:9F:5C:20:47:B1:22:00:D4: 50:A1:4F:62:CA:FD:E5:78 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Oct 23 08:00:38.309 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:D5:1D:EA:AF:0D:68:F5:5E:33:7A:E4: B9:3A:83:CB:24:A6:B3:9A:FD:72:F0:ED:33:9E:9C:44: CD:39:B0:A7:0F:02:21:00:BC:5A:C3:7F:1E:F8:C5:6E: 70:DF:DC:1B:A7:70:AA:0D:F6:F0:F6:37:90:D8:72:24: 1B:4F:0B:49:E8:42:67:59
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-11-14T05:51:30+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=DigiCert Inc CN=GeoTrust TLS DV RSA Mixed SHA256 2020 CA-1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root CA
Valid from
2020-07-16T12:21:44+00:00
Expires
2023-05-31T23:59:59+00:00
Days remaining
-1263
Serial (hex)
0C08966535B942A9735265E4F97540BC
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

8C:43:C5:E3:40:EC:64:0F:93:EA:77:4A:C5:35:3C:CA:90:42:F7:64:FF:83:7F:87:0D:8B:64:76:3C:45:8A:41
Certificate extensions & PEM
subjectKeyIdentifier
12:C9:88:9B:2F:C9:44:7A:7D:12:F1:DF:40:03:42:98:92:C7:24:D6
authorityKeyIdentifier
03:DE:50:35:56:D1:4C:BB:66:F0:A3:E2:1B:1B:C3:97:B2:3D:D1:55
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootCA.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalRootCA.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.digicert.com/CPS User Notice: Explicit Text: Any use of this Certificate constitutes acceptance of the Relying Party Agreement located at https://www.digicert.com/rpa-ua
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root CA
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root CA
Valid from
2006-11-10T00:00:00+00:00
Expires
2031-11-10T00:00:00+00:00
Days remaining
1821
Serial (hex)
083BE056904246B1A1756AC95991C74A
Signature
RSA-SHA1
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

43:48:A0:E9:44:4C:78:CB:26:5E:05:8D:5E:89:44:B4:D8:4F:96:62:BD:26:DB:25:7F:89:34:A4:43:C7:01:61
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
subjectKeyIdentifier
03:DE:50:35:56:D1:4C:BB:66:F0:A3:E2:1B:1B:C3:97:B2:3D:D1:55
authorityKeyIdentifier
03:DE:50:35:56:D1:4C:BB:66:F0:A3:E2:1B:1B:C3:97:B2:3D:D1:55
-----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 →