77/100 SECURITY SCORE

Certificate Information

Subject
CN=sigmaoffice.jp
Issuer
C=US, O=Google Trust Services, CN=WR3
Valid From
August 09, 2026
Valid Until
November 07, 2026 60 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
32:E3:D5:35:0F:72:4E:02:58:04:A3:8B:0F:A0:66:8A:F6:78:37:07:67:C0:D4:66:3D:97:54:F0:EB:D5:75:56
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 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
  • 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
www.maillifier.com

Other domains in certificate

btalkv2.88db.com.hk
webperformancepro.alexlockhart.me
alphasolutions.info
mynewlink.amando-vivir.com
calculator.americaoffbalance.org
anischenko.dev
www.audeedu.com.br
aura.auralith.org
bagajes.fr
benshishko.eu
admin.bestinweb3.com
blabla.cam
prospect.blackbx.io
bluemoon.sg
note.bofanzhang.uk
403.bony.space
www.bootledger.net
residencias.cideapps.com
test.sso.culliganiot.com
cutforit.com
davidism.net
test.ascotgroup.on.decisionrules.io
deltyo.fr
www.digitechsecurity.ca
www.drivercar.fr
www.e3.io
www.ebytech.com
ecopacguatemala.org
ehcastellertaldea.eus
www.embelezapet.shop
shop.empowerji.com
endurancehorses.org
platform-demo.engram.io
www.ezpuppies.com
www.facturx-facile.fr
webcomic.geekwonders.jp
goelimmigration.ca
dev-jornada.hospital.gohealth.tech
wp.goldendrapes.in
argenpesos.gueno.com.ar
h2othemultigym.in
hagerty.app
www.hauscode.dev
kassa.homeofzen.nl
old.jdu-it-consulting.com
jeremyfossette.fr
www.karelhart.cz
getapp.khaalijeb.com
itg-driver-test.kidgo.io
kidsatplay.co.nz
kontoro.no
krehsten.com
kiosk.kynda.one
www.landlessrealestate.com
lanex.one
masakecil.sigi.ledgerowl.com
testdom-dev.lfv.jp
looplog.site
major-kostroma.ru
mandala.one
moncompte-outils.mangeonsfrais.fr
moqumo.dev
mumsnmidwife.nz
naomijoseph.me
nevochim.com
ninjapunch.ninja
www.order-lens.com
oxsoft.io
pagoselrosario.com.mx
app.payr.org.in
www.pentaware.co.in
picklm.com
pilonidalsinustreatments.com
www.playtrainmotiv.com
rajcabs.com
rangerdanger.com.au
pasca.renju0.com
www.sdwisetechs.co.uk
www.seatedrestaurants.io
sigmaoffice.jp
silverlabpteltd.com
www.supaship.io
www.techyz.net
texasprideraingutters.com
penyerapan.transmigrasi.go.id
fabric.tri3d.in
trusthomeslegaladvisoryservices.com
uk.portion-control.turskyi.com
iccasa.uem.edu.in
msg.uperb.com
uthrathealthcare.in
staging.admin.vette.io
volo.moda
www.voltaire.vision
vtasolution.vn
waxedbymolly.co.uk
www.xpime.com
yanniks.de
www.yeditepe.work