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=15820.ca
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
April 07, 2026
Valid Until
July 06, 2026 41 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
F8:32:CA:3F:28:91:25:38:38:B2:CB:F2:CE:1D:DF:8E:26:FA:84:9F:32:4C:C7:C9:0F:62:C3:8C:C6:57:A5:FC
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
whispers.it *.whispers.it *.api.whispers.it *.data.whispers.it *.dev.whispers.it *.hostmaster.whispers.it *.report.whispers.it *.staging.whispers.it *.superset.whispers.it

Other domains in certificate

15820.ca *.15820.ca
18827.co *.18827.co
2020censusautomatedclassroomtraining.com *.2020censusautomatedclassroomtraining.com *.ww25.2020censusautomatedclassroomtraining.com *.ww38.2020censusautomatedclassroomtraining.com *.www.2020censusautomatedclassroomtraining.com
a48655328.top *.a48655328.top
avventura.it.com *.avventura.it.com
bda-treptow.de *.bda-treptow.de
bem46.top *.bem46.top
cinelabpro.sbs *.cinelabpro.sbs
daswetter.it *.daswetter.it
funsign.it.com *.funsign.it.com
html-metatags.de *.html-metatags.de
hupol.info *.hupol.info
hyuza.live *.hyuza.live
j7ygpe5wbw.top *.j7ygpe5wbw.top
jav528.app *.jav528.app
kode4dgaspol.com *.kode4dgaspol.com *.www.kode4dgaspol.com
*.eu.lekukoa.com *.fr.lekukoa.com lekukoa.com *.lekukoa.com *.random.lekukoa.com
leos.live *.leos.live
nasdaq-ais.it.com *.nasdaq-ais.it.com
owl.it.com *.owl.it.com
pdyrmj.futbol *.pdyrmj.futbol
rnpzn.tube *.rnpzn.tube
rtgfg.cfd *.rtgfg.cfd *.www.rtgfg.cfd
schotten-erfurt.de *.schotten-erfurt.de
sevrd.reviews *.sevrd.reviews
sgedo.live *.sgedo.live
sgyl888.xyz *.sgyl888.xyz
sosowa.com *.sosowa.com
*.gadsplus.starsale.com starsale.com *.starsale.com
theywerewrong.com *.theywerewrong.com
traderwinds.com *.traderwinds.com
valutni.com *.valutni.com
vg-slot88.it.com *.vg-slot88.it.com
wqujn.tube *.wqujn.tube
xbt.it.com *.xbt.it.com
yerhi.click *.yerhi.click