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=crboo.com
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
February 19, 2026
Valid Until
May 20, 2026 89 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
CF:CA:E1:AE:91:E6:33:58:4E:1D:04:42:04:5F:C9:EC:FE:5E:41:88:CA:3D:3F:26:C7:36:4A:A0:0F:46:DA:EF
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
sharmaa.com *.sharmaa.com *.acceso.sharmaa.com *.anyconnect.sharmaa.com *.api.sharmaa.com *.app.sharmaa.com *.app2.sharmaa.com *.autodiscover.sharmaa.com *.citrix.sharmaa.com *.cloudapp.sharmaa.com *.desktopstudent.sharmaa.com *.gateway.sharmaa.com *.intra.sharmaa.com *.labvirtual.sharmaa.com *.mail.sharmaa.com *.mobileconnect.sharmaa.com *.nitin.sharmaa.com *.officevpn.sharmaa.com *.owa.sharmaa.com *.portal2.sharmaa.com *.receiver.sharmaa.com *.remoto.sharmaa.com *.s.sharmaa.com *.secure.sharmaa.com *.secureconnect.sharmaa.com *.sghzl.sharmaa.com *.studentsvpn.sharmaa.com *.ts.sharmaa.com *.vdi1.sharmaa.com *.virtualaccess.sharmaa.com *.virtualapps.sharmaa.com *.virtualstudent.sharmaa.com *.vpnssl.sharmaa.com *.ww16.sharmaa.com *.ww25.sharmaa.com

Other domains in certificate

*.276754137.crboo.com *.af1118.crboo.com *.andtwo.crboo.com *.away.crboo.com *.babyfacing.crboo.com *.bwcrecords.crboo.com crboo.com *.crboo.com *.ddouble.crboo.com *.duke.crboo.com *.earhuhu.crboo.com *.eatingher.crboo.com *.ebay.crboo.com *.forbidden.crboo.com *.fttsbf.crboo.com *.fugui8.crboo.com *.hanahyde.crboo.com *.hangzhouyimeng.crboo.com *.intysgjney.crboo.com *.kamkliikunnanhostmaster.crboo.com *.karu.crboo.com *.kiss5208ly.crboo.com *.laotie.crboo.com *.littletata.crboo.com *.lovemyselfmore.crboo.com *.nakedblack.crboo.com *.random.crboo.com *.seraphim.crboo.com *.shanfeng.crboo.com *.show.crboo.com *.st720.crboo.com *.sunamizu.crboo.com *.sunflowers.crboo.com *.takano.crboo.com *.theprimeofus.crboo.com *.tingky.crboo.com *.tjn215.crboo.com *.trista08.crboo.com *.u-knowcandy.crboo.com *.vashbb.crboo.com *.xxss.crboo.com *.yiran.crboo.com
*.acceso.typewriter.sg *.de4.typewriter.sg *.desktop.typewriter.sg *.ex02.typewriter.sg *.imap4.typewriter.sg *.mobile.typewriter.sg *.rdp.typewriter.sg *.rds1.typewriter.sg *.support.typewriter.sg typewriter.sg *.typewriter.sg *.vpn.typewriter.sg *.vs.typewriter.sg