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=redtag-sale.com
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
February 11, 2026
Valid Until
May 12, 2026 85 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
21:3D:98:4B:40:C5:7A:35:D7:B9:82:8E:45:08:DF:7B:4C:09:2F:73:49:1C:05:9C:4E:5F:14:58:6D:3E:49:1A
Alternative Names
88 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

88 domains
esforo.com *.esforo.com *.clickinfo.esforo.com *.eternal.esforo.com *.eternals.esforo.com *.flod.esforo.com *.mail.esforo.com *.sitemaps.esforo.com *.tecnologickgames.esforo.com *.test.esforo.com *.vpn.esforo.com *.ww16.esforo.com *.ww17.esforo.com *.ww38.esforo.com

Other domains in certificate

*.access.kezar.com *.autoconfig.kezar.com *.autodiscover.kezar.com *.cloudvpn.kezar.com *.connect.kezar.com *.email.kezar.com *.exchange.kezar.com *.firewall.kezar.com *.forticlient.kezar.com *.fortigate.kezar.com *.fortigatevpn.kezar.com *.fortinet.kezar.com *.ftp.kezar.com *.gateway.kezar.com *.imap.kezar.com kezar.com *.kezar.com *.mail.kezar.com *.office.kezar.com *.open.kezar.com *.owa.kezar.com *.portal.kezar.com *.ra.kezar.com *.ravpn.kezar.com *.remote.kezar.com *.secure.kezar.com *.sitemap.kezar.com *.sitemaps.kezar.com *.smtp.kezar.com *.webvpn.kezar.com *.ww16.kezar.com
*.api.kuechenmaschine.com kuechenmaschine.com *.kuechenmaschine.com *.mail.kuechenmaschine.com *.mybosch.kuechenmaschine.com *.sitemaps.kuechenmaschine.com *.test.kuechenmaschine.com *.ww1.kuechenmaschine.com
*.api.kumagaya.com *.as9912.kumagaya.com *.backup.kumagaya.com kumagaya.com *.kumagaya.com *.login.kumagaya.com *.mail.kumagaya.com *.sitemap.kumagaya.com *.test.kumagaya.com *.ww16.kumagaya.com
nutsa.com *.nutsa.com *.store.nutsa.com *.wiki.nutsa.com *.ww16.nutsa.com *.ww17.nutsa.com *.ww25.nutsa.com
*.2ffc481d-07c4-496d-b3b9-417bbfb30a53.redtag-sale.com *.admin.redtag-sale.com *.app.redtag-sale.com *.assets.redtag-sale.com *.dairyfree.redtag-sale.com *.hotdeal.redtag-sale.com *.kosher.redtag-sale.com *.lowcarb.redtag-sale.com *.m.redtag-sale.com *.organic.redtag-sale.com redtag-sale.com *.redtag-sale.com *.wwww.redtag-sale.com
*.hostmaster.thesiamese.com thesiamese.com *.thesiamese.com *.vuxfyww1.thesiamese.com *.ww1.thesiamese.com