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=studypet.xyz
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
February 13, 2026
Valid Until
May 14, 2026 79 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
F3:34:24:7F:55:13:4E:7B:7B:DF:6B:DE:19:F7:DA:8B:D4:BE:FE:7E:6F:02:30:AC:D2:33:8B:0B:51:56:D8:BE
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
backendengineer.io *.backendengineer.io *.sitemap.backendengineer.io

Other domains in certificate

azipcdn.com *.azipcdn.com *.random.azipcdn.com *.sitemap.azipcdn.com *.ta-014.azipcdn.com *.tc-004.azipcdn.com *.tc-014.azipcdn.com *.wildcard.azipcdn.com
i-have-a-prox.cyou *.i-have-a-prox.cyou *.sdfasd.i-have-a-prox.cyou
*.adblock.investopedia.team *.adguard01.investopedia.team *.agh.investopedia.team *.dns1.investopedia.team investopedia.team *.investopedia.team *.ns.investopedia.team *.random.investopedia.team *.ww25.investopedia.team *.ww38.investopedia.team
kezhuo.com *.kezhuo.com
leogamerszone.com *.leogamerszone.com *.sitemap.leogamerszone.com
macchioni.com *.macchioni.com
*.d.madmir4.xyz *.ftp.madmir4.xyz madmir4.xyz *.madmir4.xyz *.sitemaps.madmir4.xyz *.ww1.madmir4.xyz *.www.madmir4.xyz
maisdeliveryadm.com *.maisdeliveryadm.com *.secure.maisdeliveryadm.com *.www.maisdeliveryadm.com
meetmurphybrokers.com *.meetmurphybrokers.com
*.38.nexusmod.com *.darksouls.nexusmod.com *.forums.nexusmod.com *.integration.nexusmod.com nexusmod.com *.nexusmod.com *.skyrim.nexusmod.com *.user.nexusmod.com *.users.nexusmod.com *.w.nexusmod.com *.ww.nexusmod.com *.ww3.nexusmod.com *.ww38.nexusmod.com *.ww3user.nexusmod.com *.wwusers.nexusmod.com *.www.nexusmod.com *.wwwuser.nexusmod.com *.xn--nsra.nexusmod.com *.xxx.nexusmod.com
*.app.stokedsalesrepslookingforyou.com *.apps.stokedsalesrepslookingforyou.com *.backup.stokedsalesrepslookingforyou.com *.cloud.stokedsalesrepslookingforyou.com *.demo.stokedsalesrepslookingforyou.com *.dev.stokedsalesrepslookingforyou.com *.ftxoevpn.stokedsalesrepslookingforyou.com *.fvdjixbr.stokedsalesrepslookingforyou.com *.hjatopcb.stokedsalesrepslookingforyou.com *.hostmaster.stokedsalesrepslookingforyou.com *.intranet.stokedsalesrepslookingforyou.com *.portal.stokedsalesrepslookingforyou.com *.rd.stokedsalesrepslookingforyou.com *.rds.stokedsalesrepslookingforyou.com *.rds2.stokedsalesrepslookingforyou.com *.rdweb.stokedsalesrepslookingforyou.com *.remote.stokedsalesrepslookingforyou.com stokedsalesrepslookingforyou.com *.stokedsalesrepslookingforyou.com *.store.stokedsalesrepslookingforyou.com *.test.stokedsalesrepslookingforyou.com *.uezraqdj.stokedsalesrepslookingforyou.com *.vdi.stokedsalesrepslookingforyou.com *.vpn.stokedsalesrepslookingforyou.com *.www.stokedsalesrepslookingforyou.com
studypet.xyz *.studypet.xyz