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

cetem.gov.br · 200.20.105.11:443

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
The certificate expires within 30 days.

Certificate verification failed

Subject
C=BR ST=Rio de Janeiro L=Rio de Janeiro O=CENTRO DE TECNOLOGIA MINERAL CN=*.cetem.gov.br
Issuer
C=BE O=GlobalSign nv-sa CN=GlobalSign RSA OV SSL CA 2018
Valid from
2025-09-29T18:36:07+00:00
Expires
2026-10-31T18:36:06+00:00
Days remaining
3
Serial (hex)
355B30AC2CF32A296BE0BAE5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.cetem.gov.br, DNS:cetem.gov.br

SHA-256 fingerprint

36:E5:6E:F4:4A:3B:B3:FB:13:D1:44:2F:57:93:14:B8:0C:C6:FF:37:93:32:18:63:70:90:18:A4:51:1C:FD:4A
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
authorityInfoAccess
CA Issuers - URI:http://secure.globalsign.com/cacert/gsrsaovsslca2018.crt OCSP - URI:http://ocsp.globalsign.com/gsrsaovsslca2018
certificatePolicies
Policy: 1.3.6.1.4.1.4146.1.20 CPS: https://www.globalsign.com/repository/ Policy: 2.23.140.1.2.2
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/gsrsaovsslca2018.crl
subjectAltName
DNS:*.cetem.gov.br, DNS:cetem.gov.br
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityKeyIdentifier
F8:EF:7F:F2:CD:78:67:A8:DE:6F:8F:24:8D:88:F1:87:03:02:B3:EB
subjectKeyIdentifier
D2:FC:E1:8E:F7:EF:18:13:F0:3C:62:0D:FD:5A:C3:AF:D0:32:1C:C5
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 : Sep 29 18:36:11.856 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:0A:9E:5B:04:D2:00:41:FD:64:00:BE:C4: A8:C9:9F:1E:BA:80:9A:4A:FB:06:DF:05:68:0B:E0:5F: 18:BB:E3:71:02:20:6B:45:5C:52:E3:87:C5:34:9F:3C: 09:5D:06:32:94:32:99:27:00:88:24:E2:D7:18:0C:27: EC:7A:27:25:28:ED 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 : Sep 29 18:36:11.849 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:C6:03:DE:84:BF:A0:2E:85:70:BD:1D: F2:67:36:B2:10:04:D5:25:B2:F6:98:51:F6:74:D6:12: A5:12:E4:48:42:02:21:00:9F:93:3E:45:40:E0:D3:9B: CF:36:9F:AC:BB:AD:63:B9:E0:B9:26:51:60:F5:DA:BE: E0:3F:43:AF:77:86:C6:85 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 : Sep 29 18:36:11.825 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:74:91:D5:6B:F1:95:DB:6A:85:7C:3C:55: D3:28:29:4B:5B:19:A8:51:FE:50:22:B6:AB:04:17:02: 92:D3:6A:AD:02:20:20:36:3E:2C:C8:1F:5C:93:1B:75: E5:AD:7B:F1:40:63:DE:57:F4:58:DE:9B:BE:FA:08:EE: 94:70:D2:A7:9D:61
-----BEGIN CERTIFICATE-----
MIIGrDCCBZSgAwIBAgIMNVswrCzzKilr4LrlMA0GCSqGSIb3DQEBCwUAMFAxCzAJ
BgNVBAYTAkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMSYwJAYDVQQDEx1H
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q+glqsmIluM4F+/r7cHwjHDR6JtdqkSUixC9/+TN6CE=
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-28T12:04:30+00:00

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

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