DNS Gurus
Cached · just now
76/100 SECURITY SCORE

Detected Technologies

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

Certificate Information

Subject
CN=duck-test.online
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
February 07, 2026
Valid Until
May 08, 2026 70 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
0B:51:76:E5:00:21:36:D3:08:DF:2F:65:58:85:C1:EE:2F:DD:3E:CC:FF:6A:A1:00:D1:1E:1C:B7:96:50:48:1D
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 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

90 domains
quitan.com *.quitan.com *.ww1.quitan.com *.ww17.quitan.com

Other domains in certificate

9ly.cc *.9ly.cc *.w.9ly.cc *.x.9ly.cc
beytullahsnk.me *.beytullahsnk.me *.www.beytullahsnk.me
*.art.duck-test.online *.box.duck-test.online *.comune.duck-test.online duck-test.online *.duck-test.online *.mail10.duck-test.online *.mail2.duck-test.online *.mailapp.duck-test.online *.mailgate.duck-test.online *.mailgw.duck-test.online *.mails.duck-test.online *.mailsrv.duck-test.online *.mbox.duck-test.online *.mx.duck-test.online *.mx0.duck-test.online *.mx01.duck-test.online *.mx02.duck-test.online *.newmail.duck-test.online *.ns.duck-test.online *.outmail.duck-test.online *.owa.duck-test.online *.po.duck-test.online *.poczta.duck-test.online *.pop3.duck-test.online *.posta.duck-test.online *.remote.duck-test.online *.seed.duck-test.online *.send.duck-test.online *.smtp1.duck-test.online *.smtp3.duck-test.online *.smtpauth.duck-test.online *.spam.duck-test.online *.tiger.duck-test.online *.vmail.duck-test.online *.ww38.duck-test.online *.zimbra.duck-test.online
*.dashboard.dznrtn.pro dznrtn.pro *.dznrtn.pro *.jenkins.dznrtn.pro *.shop.dznrtn.pro *.staging.dznrtn.pro *.stg.dznrtn.pro *.web.dznrtn.pro *.webdisk.dznrtn.pro *.www.dznrtn.pro
*.demo.ecenacademy.com *.dp.ecenacademy.com ecenacademy.com *.ecenacademy.com *.gitlab.ecenacademy.com *.shop.ecenacademy.com *.sitemap.ecenacademy.com *.staging.ecenacademy.com *.www.ecenacademy.com
*.bvianmghcnm.ejmerch.com *.dashboard.ejmerch.com *.dev.ejmerch.com ejmerch.com *.ejmerch.com *.forum.ejmerch.com *.m.ejmerch.com *.my.ejmerch.com *.portal.ejmerch.com *.share.ejmerch.com *.shop.ejmerch.com *.store.ejmerch.com *.vpn.ejmerch.com *.www.ejmerch.com
embedsito.net *.embedsito.net *.i.embedsito.net *.test.embedsito.net
natureceline.fr *.natureceline.fr
thestreameastfun.com *.thestreameastfun.com
vozewo.com *.vozewo.com