DNS Gurus
Cached · just now
76/100 SECURITY SCORE

Certificate Information

Subject
CN=accounting.co
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
February 06, 2026
Valid Until
May 07, 2026 85 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
58:30:81:D3:80:0A:75:7E:D9:7B:9B:3D:67:37:21:81:10:75:6F:BB:2F:A9:E2:46:85:6D:3E:CA:1E:01:55:1C
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
adelaid.com *.adelaid.com *.access.adelaid.com *.admin.adelaid.com *.api.adelaid.com *.cloud.adelaid.com *.gateway.adelaid.com *.hostmaster.adelaid.com *.landing.adelaid.com *.mail.adelaid.com *.portal.adelaid.com *.rdp.adelaid.com *.rds.adelaid.com *.rds1.adelaid.com *.rdweb.adelaid.com *.remote.adelaid.com *.staging.adelaid.com *.student.adelaid.com *.test.adelaid.com *.vpn.adelaid.com *.ww1.adelaid.com *.ww17.adelaid.com *.www.adelaid.com

Other domains in certificate

*.2b6c11b4c1-frontier.accounting.co accounting.co *.accounting.co *.cloudplayer.accounting.co *.cn.accounting.co *.com.accounting.co *.financial.accounting.co *.nu.accounting.co *.p-y6-www-amazon-co-uk-kalias.accounting.co *.se.accounting.co *.ww38.accounting.co
*.4d71cf7d-d84d-4e48-b145-bbb71160e767.amikazi.deals amikazi.deals *.amikazi.deals *.api.amikazi.deals *.app.amikazi.deals *.drvpn.amikazi.deals *.test.amikazi.deals
aucklandairportstrataclub.com *.aucklandairportstrataclub.com *.chmkagkbh.aucklandairportstrataclub.com
darksouls.it *.darksouls.it *.dash.darksouls.it
*.checkout.loftwallart.co loftwallart.co *.loftwallart.co
*.api.maurella.it maurella.it *.maurella.it
*.bslmp.msenkov.info msenkov.info *.msenkov.info
myperfectresume.co *.myperfectresume.co *.random.myperfectresume.co *.tx.myperfectresume.co *.ww25.myperfectresume.co *.ww38.myperfectresume.co
*.api.pream.it pream.it *.pream.it
*.btc.safewise.io safewise.io *.safewise.io *.ww25.safewise.io *.ww38.safewise.io
*.c.sibu.online *.c3.sibu.online sibu.online *.sibu.online
*.insurance.truyenaint.com truyenaint.com *.truyenaint.com *.vip.truyenaint.com *.wildcard.truyenaint.com *.www.truyenaint.com
*.comune.tvangels.com *.library.tvangels.com *.mx.tvangels.com *.qa.tvangels.com tvangels.com *.tvangels.com *.ww17.tvangels.com *.xml.tvangels.com