DNS Gurus
Cached · just now
76/100 SECURITY SCORE

Certificate Information

Subject
CN=alperne.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
February 09, 2026
Valid Until
May 10, 2026 89 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
64:AD:12:EC:41:7E:28:0F:0F:3B:18:BD:D6:3D:8D:EB:D6:98:D3:30:BB:6F:B7:03:F2:32:4B:7C:90:91:03:D3
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
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
akitu.com *.akitu.com *.admin.akitu.com *.app.akitu.com *.assets.akitu.com *.blog.akitu.com *.demo.akitu.com *.emv1.akitu.com *.hostmaster.akitu.com *.imap1.akitu.com *.m.akitu.com *.mail.akitu.com *.mailer.akitu.com *.mailhost.akitu.com *.mta-sts.akitu.com *.mx1.akitu.com *.pop.akitu.com *.pop3.akitu.com *.server.akitu.com *.shop.akitu.com *.sitemap.akitu.com *.smtp1.akitu.com *.staging.akitu.com *.ww1.akitu.com

Other domains in certificate

*.admin.alianzaempresarial.com alianzaempresarial.com *.alianzaempresarial.com *.beta.alianzaempresarial.com *.blog.alianzaempresarial.com *.crm.alianzaempresarial.com *.demo.alianzaempresarial.com *.eml.alianzaempresarial.com *.emv1.alianzaempresarial.com *.forum.alianzaempresarial.com *.help.alianzaempresarial.com *.hostmaster.alianzaempresarial.com *.lime.alianzaempresarial.com *.smtp2.alianzaempresarial.com *.ww1.alianzaempresarial.com *.ww16.alianzaempresarial.com *.ww17.alianzaempresarial.com *.ww25.alianzaempresarial.com
*.access.alperne.com *.admin.alperne.com alperne.com *.alperne.com *.api.alperne.com *.assets.alperne.com *.auth.alperne.com *.cloud.alperne.com *.correio.alperne.com *.emv1.alperne.com *.exchange.alperne.com *.hostmaster.alperne.com *.m.alperne.com *.mail.alperne.com *.mailgw.alperne.com *.mailserver.alperne.com *.member.alperne.com *.members.alperne.com *.rdp.alperne.com *.rds.alperne.com *.rds1.alperne.com *.rdweb.alperne.com *.remote.alperne.com *.sitemap.alperne.com *.smtp.alperne.com *.smtp1.alperne.com *.test.alperne.com *.vpn.alperne.com
*.59b2d919-cc5b-4585-8412-a222aa365eec.idylltech.com idylltech.com *.idylltech.com
*.group.jojowang.com jojowang.com *.jojowang.com *.webmail.jojowang.com
*.admin.movieforfree.com *.assets.movieforfree.com *.demo.movieforfree.com *.forms.movieforfree.com *.hostmaster.movieforfree.com *.m.movieforfree.com movieforfree.com *.movieforfree.com *.mxplkm.movieforfree.com *.test.movieforfree.com *.ww1.movieforfree.com *.ww11.movieforfree.com *.ww16.movieforfree.com