Open
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just now
77/100
SECURITY SCORE
Certificate Information
Subject
CN=starmath.app
Issuer
C=US, O=Google Trust Services, CN=WR3
Valid From
December 30, 2025
Valid Until
March 30, 2026
75 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
CE:BF:1B:F4:37:31:2D:5C:CC:81:E8:58:95:2E:F4:84:ED:EF:4F:50:97:48:0E:A3:D1:30:82:F9:01:C6:8C:BF
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
starmath.app
21stparadigm.com
trustarc.417.cz
kalyna.activia.ua
rafaeldealmeida.adv.br
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plataforma.aimob.com.br
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chatters.alxios.com
arccon.se
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migration.balanceai.ca
www.bddlogspeed.ro
test.bedsab.com
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belopets.com
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brasri.se
britplay.com
jederzeit.cateringportal.io
wab.cclp.ar
cgll.com.pe
aislogic.co.in
vnbus.com.ua
davidmelo.dev.br
dingq.art
www.blog.ditectrev.com
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pentadbir.peperiksaan.uitm.edu.my
webfpc.ehryourway.com
stripe.staging.einfachgast.de
app.emberwave.eu
yo-dev.eparatodos.org
join.fabulist.app
forestapart.ro
www.frame-works.ai
goround.gemsotec.com
www.gocaters.in
dashboard.gtoybox.net
gtoybox.net
haynet.co
app.humansintech.io
pets.hypervr.games
zombiecleanupservice.hypervr.games
promotion.indexlivingmall.com
infinitedistance.site
investtech.pro
merchantinstall.iomd.info
pastor.izar.at
www.johnludena.com
dagrapport.katalysatorduravermeer.nl
app.levelapp.com.br
studio.lotusaurora.xyz
enexis.test.m4m.io
marcellin.me
melodyze.ai
www.moskalti.app
delivery.moteev.store
www.moxieleavers.co.uk
www.mstoilova.com
app.myqrbnb.com
blog.n-1.tech
www.naijyan.com
mimamoruno-dev.freshvoice.ne.jp
hub-dev.nexilab.co
health.nexodynamix.com
nimly.ru
www.opencasting.jp
outerpals.net
www.pasandomeridianos.com.ar
www.patryk.me
www.pensadoresmatematicos.com
mijn.pensioenstartpunt.nl
app.poinz.ch
coopons.psyntax.org
ip.qos.tech
queroshow.com.br
quickcells.co
www.rastechkorea.com
www.restaurantnapoli.nl
spearlsalonsj.salonxpress.me
www.selfie-jagten.dk
certificates.sem.community
www.simplesplan.com.br
www.slompadvogados.com.br
www.smieja.cz
solidary.gr
app.spaceli.io
sm7001.supplychainmaster.org
app.tabledrop.com
app.taxhubcrm.com
colocbot.techally.be
www.terava.app
titanconsulting.ai
ubermart.nl
www.vistax.app
y1n0.ma
borja.yedra20.es
yingyingwu.io
Other domains in certificate