77/100 SECURITY SCORE

Certificate Information

Subject
CN=teach.lingoberry.co
Issuer
C=US, O=Google Trust Services, CN=WR3
Valid From
December 29, 2025
Valid Until
March 29, 2026 76 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
25:E3:53:5C:4B:C2:72:EE:AD:AC:A1:3A:20:EE:DE:40:25:12:D5:C9:89:73:52:40:7A:6E:BC:3C:35:B1:B3:F3
Alternative Names

Security Configuration

TLS Protocols
TLS 1.2 TLS 1.3
Forward Secrecy
Supported (Modern clients use PFS)

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=31556926
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
  • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • 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

100 domains
uat.quattro.today

Other domains in certificate

10xbrno.cz
analyze-demo.aiteckworks.jp
www.alpha-transport.jp
animesoc.com
aosoftware.at
atakarejo.appshare.com.br
axis-coupon.awesomepiece.com
www.bearbytelabs.com
burakcancinar.com
creator.certified-content.com docs.certified-content.com
citimap.org
liquourlogic.co.ke
coinflow.money
alphafr-cw.confido.health
app-link.datari.eu
www.datiengo.com
www.didcelsiuspwn.me
digitalstoa.com
www.drivelist.in
elephant.gift
iql.equiem.mobi
seas.fieldeffect.net
libra.finculus.eu
aravind.finmitr.org
aidev.floriansondershausen.de
focus-sync.com
www.foxpaintgames.com
app.frillice.com
www.golfpad.events
quiz.groupone.pl
halavancabjj.com
apex.hiddedev.nl
frenezia.hureljeremy.fr
trek.ikuzaki.jp
www.immaculateinteriors.in
timesheet.techtime.it.com
aem.kad.is
starlapse.kevinbigay.dev
soroban.kidsup.net
kodetis.com
krediitium.ee
go.laborae.mx
admin.lessontime.co.uk
prod.lfgames.net
teach.lingoberry.co
portal.lisaacademy.org
www.livability.org
visualization.lookrec-staging.work
www.lovecodecampus.kr
www.lyle.fyi
vault.malidag.com
app.mealx.net
www.menu.al
idolatre.milramasapp.com.br
acervo.mwms.com.br
open.mywindo.shop
www.nasbulegal.com
negative.red
staging.nowwagon.com
checkout.ora.organic
adminca.udghosh.org.in
www.p29.no
alpha.pacta-cloud.app
tag.paymii.io
segesta.pensioeninzichtelijk.nl
www.pilshuisje.nl
tips.pixnet.net
www.playpac.cl
www.potomacdining.com
tour-feedback.powerproleasing.com
www.procoder.ro
app.dev.provisoevent.no
qr-tag.app
rdc-31.rotaract3220.org
www.saboresmarinos.site
samaritan.bio
sbtravel.pk
sistemaplural.com.br
link.mmg.specialquiz.it
links.strivetech.com
suzukiplan.com
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textgraphics.eu
blogs.thirdray.ai
btcconference.thndr.gg
applinks-acc.tintelgift.nl
scripts.tsg.tordenapps.com
trustgraph.space
www.tweakyfai.com
tylerwickline.com
voncerts.in
wantone.app
www.webnamieru.net
wendellkuci.com.br
windrushbadmintonclub.co.uk
xcene.com.br
app.yournextprompt.com
eventio.znoj.cz