DNS Gurus
Cached · just now
75/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 1
Let's Encrypt logo Let's Encrypt

Certificate Information

Subject
CN=tedxdu.com
Issuer
C=US, O=Let's Encrypt, CN=YE1
Valid From
October 23, 2026
Valid Until
January 21, 2027 77 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
58:29:14:85:85:49:2F:60:94:14:47:21:EA:4D:D9:10:06:0D:88:C4:D9:79:B4:D2:CD:21:8B:55:45:A7:C6:DA
Alternative Names
87 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 Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
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

87 domains
erolj.com *.erolj.com *.7.erolj.com *.atxjofms.erolj.com *.autodiscover.erolj.com *.bdo.erolj.com *.bfijztwh.erolj.com *.bronsvooteapps.erolj.com *.connect.erolj.com *.exchange.erolj.com *.exmb2.erolj.com *.fortivpn.erolj.com *.homeoffice.erolj.com *.ktxuywpl.erolj.com *.mail07.erolj.com *.mail1.erolj.com *.mail3.erolj.com *.mbox.erolj.com *.myapps.erolj.com *.rdp.erolj.com *.relay.erolj.com *.remoteapps.erolj.com *.smtp.erolj.com *.sslvpn2.erolj.com *.vdfoptge.erolj.com *.vpn3.erolj.com *.ww1.erolj.com *.yqumdwef.erolj.com *.zrxwhxapp.erolj.com

Other domains in certificate

*.anime.av4us.uk *.av.av4us.uk av4us.uk *.av4us.uk *.en.av4us.uk
*.admin.keyboardhacks.io *.api.keyboardhacks.io *.app.keyboardhacks.io *.assets.keyboardhacks.io *.backend.keyboardhacks.io *.client.keyboardhacks.io *.console.keyboardhacks.io *.dashboard.keyboardhacks.io *.dev-assets.keyboardhacks.io *.dev.keyboardhacks.io *.internal.keyboardhacks.io *.k8s.keyboardhacks.io keyboardhacks.io *.keyboardhacks.io *.staging.keyboardhacks.io *.stg.keyboardhacks.io
modellingmadness.com *.modellingmadness.com *.ww17.modellingmadness.com *.ww38.modellingmadness.com
*.32.nafas.studio *.app.nafas.studio *.idcenter.nafas.studio *.jd.nafas.studio *.m.nafas.studio *.mhfeccheckout.nafas.studio nafas.studio *.nafas.studio *.wildcardprobe-1777095603688171586.nafas.studio *.wildcardprobe-1777173126938300595.nafas.studio *.wildcardprobe-1777176065341679850.nafas.studio
*.hdmdn.tedxdu.com *.hhhkbcmqhq.tedxdu.com *.hostmaster.tedxdu.com *.m.tedxdu.com tedxdu.com *.tedxdu.com *.ww38.tedxdu.com *.www.tedxdu.com
*.app.xtube.it *.backend.xtube.it *.demo.xtube.it *.dev.xtube.it *.development.xtube.it *.hostmaster.xtube.it *.hotfix.xtube.it *.mail.xtube.it *.media.xtube.it *.smtp.xtube.it *.streaming.xtube.it *.superset.xtube.it xtube.it *.xtube.it