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=r-j.app
Issuer
C=US, O=Let's Encrypt, CN=YR2
Valid From
June 13, 2026
Valid Until
September 11, 2026 85 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
17:23:24:4E:D1:F6:57:A1:10:AB:1C:72:7C:B2:8B:32:B9:7F:56:97:A6:B3:43:DD:9F:EB:76:73:FD:33:2A:E5
Alternative Names
89 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

89 domains
responsivetest.com *.responsivetest.com *.com.responsivetest.com *.dev.responsivetest.com

Other domains in certificate

999tz.xyz *.999tz.xyz *.ww38.999tz.xyz
akmlinks.pro *.akmlinks.pro *.dev.akmlinks.pro
australianshepherd.com *.australianshepherd.com
*.aussteiger.bdpp.org bdpp.org *.bdpp.org *.cloud.bdpp.org *.demo.bdpp.org *.hostmaster.bdpp.org *.kstbcs.bdpp.org *.rd.bdpp.org *.rds.bdpp.org *.staging.bdpp.org *.tortal.bdpp.org *.www.bdpp.org
darkwanderer.com *.darkwanderer.com *.random.darkwanderer.com *.ww17.darkwanderer.com
gamenftplay.digital *.gamenftplay.digital *.rustore.gamenftplay.digital *.webmail.gamenftplay.digital *.www.gamenftplay.digital
gigwam.co.uk *.gigwam.co.uk *.my.gigwam.co.uk
gulfrpg.org *.gulfrpg.org
*.bk.pinnaclecareerpath.live pinnaclecareerpath.live *.pinnaclecareerpath.live
*.integration.r-j.app *.mx.r-j.app r-j.app *.r-j.app *.sandbox.r-j.app *.test.r-j.app *.visualization.r-j.app
snowsen.com *.snowsen.com
ss3353.vip *.ss3353.vip
*.hostmaster.sslm.org *.m.sslm.org sslm.org *.sslm.org
stayfitguru.com *.stayfitguru.com
ttr42.com *.ttr42.com
tzm0alnmmi.top *.tzm0alnmmi.top
ultimatetravelspecs.live *.ultimatetravelspecs.live
vacationclarityhub.xyz *.vacationclarityhub.xyz
vddeutn400.vip *.vddeutn400.vip
wg7e83fqz.top *.wg7e83fqz.top
wintrydomain.com *.wintrydomain.com
*.cloud.xn--uir387h.com *.hostmaster.xn--uir387h.com *.rds.xn--uir387h.com *.rdweb.xn--uir387h.com *.remote.xn--uir387h.com *.seguro.xn--uir387h.com *.sitemap.xn--uir387h.com xn--uir387h.com *.xn--uir387h.com
zanranteam.com *.zanranteam.com
*.wildcard.zh.com.au *.ww25.zh.com.au *.ww38.zh.com.au *.www.zh.com.au zh.com.au *.zh.com.au