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

cefetmg.br · 200.131.37.111:443

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=Minas Gerais L=Belo Horizonte O=CENTRO FEDERAL DE EDUCACAO TECNOLOGICA DE MINAS GERAIS CN=vm-wp-app-principal.infrati.cefetmg.br
Issuer
C=BR O=REDE NACIONAL DE ENSINO E PESQUISA - RNP CN=RNP ICPEdu GR46 OV TLS CA 2025
Valid from
2026-02-20T13:29:34+00:00
Expires
2027-03-24T13:29:33+00:00
Days remaining
171
Serial (hex)
2510A795FD37B381AAF4BC1C
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:vm-wp-app-principal.infrati.cefetmg.br, DNS:www.cefetmg.br

SHA-256 fingerprint

B1:E3:2C:28:3F:21:2E:96:9E:27:5B:F9:DC:38:2E:6E:AF:D3:04:99:E0:FE:40:7A:DA:98:21:63:C8:10:DE:AC
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:vm-wp-app-principal.infrati.cefetmg.br, DNS:www.cefetmg.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
24:EB:B4:E8:EB:F0:3B:DE:68:2E:C5:67:86:B8:28:C1:A5:7A:07:06
ct_precert_scts
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 : Feb 20 13:29:39.107 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:8C:BC:82:33:4C:2F:5E:AB:D6:CD:D0: 4A:AB:F2:76:E7:0C:6E:FD:65:A2:D4:A4:32:1A:10:4C: F4:F8:CF:01:1E:02:20:76:52:97:2A:91:BD:B7:58:D9: 80:3D:73:21:A2:28:78:28:1F:3C:9F:8C:9C:36:13:37: AD:E1:3C:7B:FC:8E:AB 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 : Feb 20 13:29:38.370 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:2E:C9:5A:8B:78:B9:F0:76:39:47:CD:65: 2B:DC:9B:1B:34:F9:4F:16:EF:CB:CB:BF:8B:47:3A:F8: 85:46:D9:89:02:21:00:DD:9F:24:B8:F0:6F:D5:3E:C1: 79:62:90:33:78:3F:DF:36:40:92:DF:78:BC:D3:ED:B2: 3D:F4:5A:F5:12:40:B7 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 20 13:29:39.341 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:E2:25:7B:41:13:97:09:31:1F:25:C7: 88:0A:D6:01:84:8D:23:2F:38:F3:FB:CF:35:A1:E6:6A: 0E:20:07:35:57:02:20:2E:62:92:BD:50:83:B9:68:B8: D5:03:F8:A2:FD:EC:41:D3:00:46:04:B8:84:13:04:DC: 3E:8D:28:9E:C7:0E:39
-----BEGIN CERTIFICATE-----
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qXMY5u68MzDTdozq79Y3HKo=
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-04T09:46:32+00:00

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

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