77/100 SECURITY SCORE

Certificate Information

Subject
CN=www.aiabc.jp
Issuer
C=US, O=Google Trust Services, CN=WR3
Valid From
November 03, 2025
Valid Until
February 01, 2026 39 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
20:A5:2E:C3:80:7F:20:9A:07:14:21:44:3D:68:A1:98:21:3F:25:B7:C9:CD:DC:F8:94:2B:A1:9E:C6:7B:46:FE
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
technical-books.gustave-studio.com

Other domains in certificate

606academy.com
aboytes.net www.aboytes.net
adreskamerhuren.be
agrichub.co.za
www.aiabc.jp
auth.alphaarchitect.com
www.astrosajwal.com
avvcastronuovoalessandra.it
dlink.castpro.live
checkvin.report
clickservico.com www.clickservico.com
clientellapps.com
portal.futuretechniques.com.np
criscamideas.com www.criscamideas.com
daftary.app
www.dailyangular.com
alpha.placeme.dataplace.ai
catalogue.dbm-ltd.co.uk
www.domiadam.com
app.dugri.us
prestto-homolog.duplow.com prestto.duplow.com
livewest.elixel.co.uk
stage.emu.blue
design.entur.org
site-result-auctions.farmgateauctions.com.au
interviews.gammaresume.com
test.getaccept.com
dev.getfriday.ai
app-dev.goball.com
greenit-naturals.org
dev.mijn.hallovriend.nl
mobile.icelabz.co.uk
academy.indefini.do
indsee.com
instacnc.se
www.ismaelgonzalez.net
sitrusappinstallbeta.jaim.tech
m-asyncinterview.jombay.com
optom.kiss-illes.com
www.learnwithnat.com
app.leb.services
lesxi.lethrodou.gr
lgmultisplit.com.br
hagana.linkpc.net
www.littleidiots.com
lsmagic.com
ss-stage.lssdev.com
markmind.com.br www.markmind.com.br
www.maroujalrafdin.com
admin.max-estrem.com
signage.mdusolutions.com
app.medihippo.de
www.metabyl.com
mindsubs.com
room-sync.my-dev-server.com
staging.mymilk.eu
contrib-trainer.naloxofind.com
namewrangler.com
ndabits.com
www.nitroflux.com
novarahr.com
palescript.com
www.paul-tohmeh.dev
petesayshello.com
www.pinartes.org
www.pku.world
pleadia.com
www.plynth.xyz
ascor.portfoliolink.co.za
www.prefabricadosgbc.com
www.premiocapitolium-roma.it
www.productscience.co.uk
www.qubitdna.us
www.rafty.cz
creators.rapid-ood.de
www.rky.io
rsmatchmaking.com
spyisland.runaway.games
www.sarthakjeevannasamuktikendra.in
sciack.it
www.scribbleout.art
www.seabeckconsulting.co.uk
www.seeiuu.com
sqirvy.xyz
starsleague.gg
suelacaramelo.com.ar
lab.swatihospital.com
taskadia.net
thecollectorseye.com
www.toraware.org
www.tuneroom.org
vinsarinfotech.com
www.wardle.app
bliss.zamlern.com