DNS Gurus
Cached · just now
79/100 SECURITY SCORE

Detected Technologies

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

Certificate Information

Subject
CN=btcao.com
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
February 19, 2026
Valid Until
May 20, 2026 87 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
52:99:07:E1:20:68:00:B5:61:43:4B:AA:E0:7F:84:F9:B6:92:66:EB:17:8E:CB:31:B1:7B:0E:5F:EC:B4:4C:41
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
Good
SAMEORIGIN
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-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
virtualtk.info *.virtualtk.info *.alibaba.virtualtk.info *.cc.virtualtk.info *.com.virtualtk.info *.inventory.virtualtk.info *.jobsite.virtualtk.info *.kaungdermatologyclinic.virtualtk.info *.loan.virtualtk.info *.mm.virtualtk.info *.place.virtualtk.info *.portals.virtualtk.info *.realestate.virtualtk.info *.ths.virtualtk.info *.xyz.virtualtk.info

Other domains in certificate

btcao.com *.btcao.com *.eml.btcao.com *.imap2.btcao.com
*.admin.internationaldata.com *.api.internationaldata.com *.app.internationaldata.com *.autodiscover.internationaldata.com *.blog.internationaldata.com *.checkout.internationaldata.com *.client.internationaldata.com *.connectvpn.internationaldata.com *.dev.internationaldata.com *.entourage.internationaldata.com *.gateway.internationaldata.com internationaldata.com *.internationaldata.com *.login.internationaldata.com *.m.internationaldata.com *.mail.internationaldata.com *.mobile.internationaldata.com *.office.internationaldata.com *.portal.internationaldata.com *.privacy.internationaldata.com *.rbstnoffice.internationaldata.com *.remoteaccess.internationaldata.com *.secureaccess.internationaldata.com *.sitemap.internationaldata.com *.sitemaps.internationaldata.com *.ssl.internationaldata.com *.sslvpn.internationaldata.com *.vpn.internationaldata.com *.vpn1.internationaldata.com *.wd-toyota.internationaldata.com *.web.internationaldata.com *.webconnect.internationaldata.com *.webmail.internationaldata.com *.webvpn.internationaldata.com *.ww.internationaldata.com *.ww1.internationaldata.com *.ww16.internationaldata.com *.ww17.internationaldata.com *.ww25.internationaldata.com *.ww38.internationaldata.com
*.127.isa.net *.5ym.isa.net *.access.isa.net isa.net *.isa.net *.neisd.isa.net *.pih.isa.net *.portal.isa.net *.s2isa0s.isa.net *.stats.isa.net *.tdz5.isa.net *.uk.isa.net *.v.isa.net *.vpn.isa.net *.w9t0a.isa.net *.web.isa.net *.xkb.isa.net *.z63u.isa.net
profi.cc *.profi.cc *.www.profi.cc
*.gov.says.in says.in *.says.in
*.cpcalendars.tanremoval.in *.remote.tanremoval.in *.shop.tanremoval.in tanremoval.in *.tanremoval.in
wwwdxc.com *.wwwdxc.com