DNS Gurus
Cached · just now
76/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 1
Let's Encrypt logo Let's Encrypt Active incidents

Certificate Information

Subject
CN=donotcalllists.com
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
May 21, 2026
Valid Until
August 19, 2026 57 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
34:8A:D6:CD:59:CC:54:02:A1:F6:DD:32:02:D8:80:D8:B4:A2:AA:D6:1F:A1:01:65:5F:DF:06:D7:92:0D:5D:31
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
codifis.es *.codifis.es *.45c7e327-e24b-434a-87ab-ccbb6461aa1b.codifis.es *.account.codifis.es *.analytics.codifis.es *.argo.codifis.es *.cabinet.codifis.es *.client.codifis.es *.cloud.codifis.es *.dashboard.codifis.es *.data.codifis.es *.demo.codifis.es *.dev.codifis.es *.ejvqkixz.codifis.es *.jnmrmdev.codifis.es *.m.codifis.es *.magento.codifis.es *.notexistsargo.codifis.es *.notexistsdemo.codifis.es *.notexistsmagento.codifis.es *.notexistsshop.codifis.es *.notexistsstaging.codifis.es *.notexistsstore.codifis.es *.notexiststest.codifis.es *.old.codifis.es *.reporting.codifis.es *.shop.codifis.es *.sorteo.codifis.es *.store.codifis.es *.superset.codifis.es *.test.codifis.es *.www.codifis.es *.xsbhedkg.codifis.es *.yvtnaolp.codifis.es

Other domains in certificate

55g51.bet *.55g51.bet
asharafricanmarket.com *.asharafricanmarket.com *.random.asharafricanmarket.com
detroner.com *.detroner.com
donotcalllists.com *.donotcalllists.com *.random.donotcalllists.com
h2ouniversity.org *.h2ouniversity.org *.ww25.h2ouniversity.org
jobservice.net *.jobservice.net *.reporting.jobservice.net *.resize.jobservice.net *.secondary.jobservice.net *.sup.jobservice.net *.vis.jobservice.net
litttledetailsschoolphotos.com *.litttledetailsschoolphotos.com *.sitemaps.litttledetailsschoolphotos.com
lowvision.co.uk *.lowvision.co.uk *.random.lowvision.co.uk
microwaveoven.au *.microwaveoven.au
nailsandbeauty.com.au *.nailsandbeauty.com.au
netflxi.com *.netflxi.com *.ww11.netflxi.com *.ww16.netflxi.com
prankojol.live *.prankojol.live
servidorgps.org *.servidorgps.org
sgcnamchi.com *.sgcnamchi.com
*.relations.snsrecruitment.co.uk snsrecruitment.co.uk *.snsrecruitment.co.uk *.training.snsrecruitment.co.uk
*.random.theindependentrestaurateur.com theindependentrestaurateur.com *.theindependentrestaurateur.com
tinyhomelistings.com *.tinyhomelistings.com
*.blog.umutsuadiye.com umutsuadiye.com *.umutsuadiye.com *.www.umutsuadiye.com
whatsyourdomainworth.co *.whatsyourdomainworth.co