DNS Gurus
Cached · just now
76/100 SECURITY SCORE

Certificate Information

Subject
CN=profesor-matematicas.online
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
59:4C:41:E2:BA:44:A5:7C:36:46:4F:59:63:5C:9F:9B:9C:3A:B1:13:57:E3:F1:34:75:BF:DD:4E:A2:6A:72:87
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
indexlien.com *.indexlien.com *.ac31.indexlien.com *.acrobate.indexlien.com *.annuref.indexlien.com *.arbres.indexlien.com *.astre.indexlien.com *.blog.indexlien.com *.bowling.indexlien.com *.brochure.indexlien.com *.cherchertrouver.indexlien.com *.citrouille.indexlien.com *.entreprise.indexlien.com *.iledefrance.indexlien.com *.journaliste.indexlien.com *.pcref.indexlien.com *.peugeot.indexlien.com *.policier.indexlien.com *.reftopliens.indexlien.com *.requin.indexlien.com *.reservoir.indexlien.com *.siteprefere.indexlien.com *.table.indexlien.com *.tapis.indexlien.com *.ustensile.indexlien.com *.valdoise.indexlien.com *.xn--vtrinaire-b4ab.indexlien.com

Other domains in certificate

*.admin.en-en--fungusbreakpro.com *.blog.en-en--fungusbreakpro.com en-en--fungusbreakpro.com *.en-en--fungusbreakpro.com *.mobile.en-en--fungusbreakpro.com *.rd.en-en--fungusbreakpro.com *.samples.en-en--fungusbreakpro.com *.ssl.en-en--fungusbreakpro.com *.teswalco.en-en--fungusbreakpro.com *.weblog.en-en--fungusbreakpro.com *.ww01.en-en--fungusbreakpro.com
localgovernmenthousing.com *.localgovernmenthousing.com *.www.localgovernmenthousing.com
*.clickk-uz.m88c.vip *.domain-controller.m88c.vip *.ecc198d6-a989-4d80-bad3-b7822d349298.m88c.vip *.fargo.m88c.vip *.farpost.m88c.vip *.idram.m88c.vip *.imaps.m88c.vip *.list.m88c.vip m88c.vip *.m88c.vip *.moneygram.m88c.vip *.nrlknxrmmelog.m88c.vip *.ozon.m88c.vip *.support.m88c.vip *.sutochno.m88c.vip *.westernunion.m88c.vip *.westernunions-az.m88c.vip *.westernunions-uz.m88c.vip *.wiki.m88c.vip *.www3ab.m88c.vip *.xrmmelog.m88c.vip
*.admin.mpoweredpatient.com *.api.mpoweredpatient.com *.app.mpoweredpatient.com *.backend.mpoweredpatient.com *.cloud.mpoweredpatient.com *.demo.mpoweredpatient.com *.ead.mpoweredpatient.com *.ftp.mpoweredpatient.com *.hostmaster.mpoweredpatient.com mpoweredpatient.com *.mpoweredpatient.com *.rd.mpoweredpatient.com *.rds.mpoweredpatient.com *.staging.mpoweredpatient.com *.uzizdadmin.mpoweredpatient.com *.vpn.mpoweredpatient.com
*.drywall-arequipa.profesor-matematicas.online profesor-matematicas.online *.profesor-matematicas.online
*.allet.superkid.in *.lms.superkid.in *.mail.superkid.in *.sitemap.superkid.in *.staging.superkid.in superkid.in *.superkid.in
worldsexx.com *.worldsexx.com