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

univasf.edu.br · 200.133.3.252:443

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
C=BR ST=PERNAMBUCO L=PETRONILA O=FUNDACAO UNIVERSIDADE FEDERAL DO VALE DO SAO FRANCISCO CN=*.univasf.edu.br
Issuer
C=BR O=REDE NACIONAL DE ENSINO E PESQUISA - RNP CN=RNP ICPEdu GR46 OV TLS CA 2025
Valid from
2026-05-13T13:06:19+00:00
Expires
2026-11-28T13:06:19+00:00
Days remaining
45
Serial (hex)
159466768574012C8E18C5D6
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.univasf.edu.br, DNS:univasf.edu.br

SHA-256 fingerprint

E5:70:29:49:45:94:EF:A6:B2:BF:EB:65:6C:15:9D:F2:63:06:89:F5:82:A3:0E:F2:97:A8:EB:08:C7:7B:CF:8C
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
authorityInfoAccess
CA Issuers - URI:http://secure.globalsign.com/cacert/rnpicpedugr46ovtlsca2025.crt OCSP - URI:http://ocsp.globalsign.com/rnpicpedugr46ovtlsca2025
certificatePolicies
Policy: 2.23.140.1.2.2
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/rnpicpedugr46ovtlsca2025.crl
subjectAltName
DNS:*.univasf.edu.br, DNS:univasf.edu.br
authorityKeyIdentifier
94:B0:C9:4F:C1:E0:6C:EF:CE:C6:2B:6C:B3:B4:CB:22:8A:76:49:B7
extendedKeyUsage
TLS Web Server Authentication
subjectKeyIdentifier
35:AB:63:D8:C0:03:33:C6:8B:E1:C5:07:CE:D7:D3:1D:4E:90:19:7C
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65: 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8 Timestamp : May 13 13:06:26.071 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:C5:6A:AB:F1:DF:A0:8C:10:51:41:10: 3F:FA:EF:B2:B7:6D:45:6B:C6:46:C1:A3:DE:C5:AD:02: 0F:0A:28:6C:68:02:21:00:E0:3B:29:49:46:49:D0:14: C8:B0:8F:DA:E5:38:E8:5B:F5:0F:2F:58:E9:EB:41:89: CB:50:09:C7:90:C6:4D:21 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 : May 13 13:06:26.023 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:B1:CC:74:E0:9C:18:52:C2:6B:C5:04: F0:D4:9E:CB:0D:07:4A:D8:D5:43:7B:41:69:28:07:81: 87:C1:3E:50:EE:02:20:4D:72:7A:C7:68:F8:24:91:C3: 0D:15:A6:AA:62:4E:C2:47:2A:A6:31:51:D9:20:7E:44: 48:FB:2C:F2:47:F4:B6 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : May 13 13:06:25.975 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:F9:54:04:04:7B:A6:57:37:6E:AA:E6: BF:CB:C5:62:A5:04:3E:BD:8C:E2:7A:7B:93:C6:E8:B7: B6:6C:93:FA:BF:02:20:19:A2:3E:11:F9:C7:17:45:77: AC:77:A2:37:62:A2:88:83:F3:A4:F2:83:42:C7:8E:70: 30:62:BF:49:E2:15:7C
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-14T06:53:52+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=BR O=Rede Nacional de Ensino e Pesquisa - RNP CN=RNP ICPEdu OV SSL CA 2019
Issuer
C=BE O=GlobalSign nv-sa CN=Trusted Root TLS CA SHA256 G3
Valid from
2020-07-05T00:00:00+00:00
Expires
2026-05-15T00:00:00+00:00
Days remaining
-153
Serial (hex)
77BD0DADB3E2C08DAF4B08631AE89CE0
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

88:FC:18:BD:07:1B:E1:FB:C5:3F:FB:C8:01:F0:3F:5B:2C:4D:A8:7B:BA:0C:09:8E:2B:48:08:F1:9E:AB:05:FE
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
AB:30:C7:07:28:4B:CB:7A:8E:5B:FE:61:69:F7:D4:7A:B2:85:9B:48
authorityKeyIdentifier
DE:4F:D7:DD:27:AE:D5:7F:58:81:E1:2C:47:AC:23:B7:C6:7B:57:EF
authorityInfoAccess
OCSP - URI:http://ocsp.globalsign.com/trustroottlssha2g3 CA Issuers - URI:http://secure.globalsign.com/cacert/trustroottlssha2g3.crt
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/trustroottlssha2g3.crl
certificatePolicies
Policy: 1.3.6.1.4.1.4146.1.20 CPS: https://www.globalsign.com/repository/ Policy: 2.23.140.1.2.2
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=BE O=GlobalSign nv-sa CN=Trusted Root TLS CA SHA256 G3
Issuer
OU=GlobalSign Root CA - R3 O=GlobalSign CN=GlobalSign
Valid from
2020-07-05T00:00:00+00:00
Expires
2027-04-25T11:00:00+00:00
Days remaining
193
Serial (hex)
77BD0D753F2E19601BD54E0A02444676
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

91:F1:9C:E5:03:C9:FE:7F:F9:58:7D:8E:FB:EF:73:15:AA:EE:77:DC:2D:14:52:61:26:49:3B:4A:D6:FE:80:1F
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
DE:4F:D7:DD:27:AE:D5:7F:58:81:E1:2C:47:AC:23:B7:C6:7B:57:EF
authorityKeyIdentifier
8F:F0:4B:7F:A8:2E:45:24:AE:4D:50:FA:63:9A:8B:DE:E2:DD:1B:BC
authorityInfoAccess
OCSP - URI:http://ocsp.globalsign.com/rootr3 CA Issuers - URI:http://secure.globalsign.com/cacert/root-r3.crt
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/root-r3.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.globalsign.com/repository/
-----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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