DNS Gurus
Cached · just now
76/100 SECURITY SCORE

Certificate Information

Subject
CN=frkhanacademy.org
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
February 10, 2026
Valid Until
May 11, 2026 89 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
F9:26:47:D3:26:76:9A:D1:85:CF:E0:43:BE:6E:F8:61:01:3E:80:55:58:CC:91:AD:94:A8:F2:20:E7:A1:7A:BE
Alternative Names
90 domains

Security Configuration

TLS Protocols
TLS 1.2 TLS 1.3
Forward Secrecy
Supported (Modern clients use PFS)

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • Add X-Content-Type-Options: nosniff
  • • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • • Consider adding Permissions-Policy to control browser features

CAA Records (Certificate Authority Authorization)

CAA Records
Not Configured (Any CA can issue certificates)
CAA Issues
  • • No CAA records configured - any CA can issue certificates
Recommendations
  • • Implement CAA records to restrict which CAs can issue certificates for your domain
  • • This adds an extra layer of security against unauthorized certificate issuance
  • • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
  • • Consider adding 'iodef' record to receive security incident reports

Subject Alternative Names

90 domains
cursooficial.com *.cursooficial.com *.centrorisorse.cursooficial.com *.com.cursooficial.com *.corespeitoalpha.cursooficial.com *.cpanel.cursooficial.com *.decoracaodecasamentosimples.cursooficial.com *.importadorprofissionalcurso.cursooficial.com *.importandocomsucesso.cursooficial.com *.quedadecabelotratamento.cursooficial.com *.respeitoalpha.cursooficial.com *.saveindustrialbrooklyn.cursooficial.com *.tesourodiretooficial.cursooficial.com *.thenewinnroughton.cursooficial.com *.www.cursooficial.com

Other domains in certificate

avtubofficial.me *.avtubofficial.me *.cpanel.avtubofficial.me
datasponsors.com *.datasponsors.com *.intranet.datasponsors.com *.vpn.datasponsors.com
*.es.frkhanacademy.org frkhanacademy.org *.frkhanacademy.org *.staging.frkhanacademy.org *.testing.frkhanacademy.org
*.anyconnect.jagadhri.com *.cisapp.jagadhri.com *.citrix.jagadhri.com *.clientesvpn.jagadhri.com *.connect.jagadhri.com *.gateway.jagadhri.com jagadhri.com *.jagadhri.com *.mail.jagadhri.com *.palovpn.jagadhri.com *.ra.jagadhri.com *.rds.jagadhri.com *.sslvpn.jagadhri.com *.vdi.jagadhri.com *.vpn.jagadhri.com *.vpngate.jagadhri.com *.webmail.jagadhri.com *.webvpn.jagadhri.com *.wiki.jagadhri.com *.ww1.jagadhri.com *.ww11.jagadhri.com *.xapp.jagadhri.com
mitanio.com *.mitanio.com *.ww25.mitanio.com
*.correo.myrie.com *.exchange.myrie.com *.mail.myrie.com *.mail3.myrie.com *.mymail.myrie.com myrie.com *.myrie.com *.outlook.myrie.com *.owa.myrie.com *.rds.myrie.com *.remote.myrie.com *.sitemaps.myrie.com *.vpn.myrie.com *.webmail.myrie.com *.ww25.myrie.com *.ww38.myrie.com
*.mail.sntrustcentralschool.com sntrustcentralschool.com *.sntrustcentralschool.com *.ww38.sntrustcentralschool.com
*.1.thomsongrassvalley.com *.app.thomsongrassvalley.com *.collaborate.thomsongrassvalley.com *.desktop.thomsongrassvalley.com *.desktopadmin.thomsongrassvalley.com *.ftp.thomsongrassvalley.com *.hdsportsproduction.thomsongrassvalley.com *.search2.thomsongrassvalley.com *.secure.thomsongrassvalley.com thomsongrassvalley.com *.thomsongrassvalley.com *.ww.thomsongrassvalley.com *.ww17.thomsongrassvalley.com *.www2.thomsongrassvalley.com *.xcx.thomsongrassvalley.com
*.www.yfp.us yfp.us *.yfp.us