DNS Gurus
Cached · just now
80/100 SECURITY SCORE

Certificate Information

Subject
CN=dev-book.colavo.kr
Issuer
C=US, O=Google Trust Services, CN=WR3
Valid From
December 18, 2025
Valid Until
March 18, 2026 64 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
1C:FB:7E:B5:ED:E8:AF:96:83:A1:C1:E1:44:1E:87:E6:4E:A3:D5:16:67:DE:07:E4:9F:11:5A:00:DC:8D:17:7C
Alternative Names
100 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
Basic
script-src; object-src; base-uri; +3 more
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Present
ch-ua-arch=*, ch-ua-bitness=*, ch-ua-full-version=*, ch-ua-full-version-list=*, ch-ua-model=*, ch-ua-wow64=*, ch-ua-form-factors=*, ch-ua-platform=*, ch-ua-platform-version=*
Recommendations
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'
  • • 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)

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
oh.ourhello.com

Other domains in certificate

staging.2meters.app
stage.5050.style
aidas.snu.ac.kr
api.adiop.com
divorcio.telesemanoel.adv.br www.divorcio.telesemanoel.adv.br
simulador-stage.airesdigital.com.br
akilanselvam.dev
anclement.com
pre-approval.apfg.com.au
pre-prod.sso.baselane.com
billionberrysidehustle.com
auth.blablalivre.fr
www.blazemotionai.com
www.booksplusapp.com
apps.bythewake.com
relamem.calexo.com
portail.caprea.ca
www.chaoslands.net
dev-book.colavo.kr
jewellcountyrecord.column.us
computersplayingcatan.com
comsize-works.com
www.daleandray.com
carestreamdental-stage.dentalxr.ai
www.devious.studio
dracofy.com
app.ealbum.in
www.ecuriedugrandchene.be
www.elflexelectronics.com
ir-q-support-staging.elliq.co
www.ezfishbot.com
flyff-calculators.com
ginecosr.com
www.globatalent.com
mobile.happymatches.com
work.hi-fab.com
dev.links.hollywood.com
js-spm-78899.homsync.co
iberolabel.com
nguyenhuyhoang744453.id.vn
www.impressia.hu
inventiapps.com
itchyfeet.com
www.jmpecharroman.com
bank.kahero.co
www.speiseplan-portal.klueh.de
www.lakeparkcuba.com
www.leforestier-philippe.fr
topservice.mitraecp.com
booking-staging.mountainmanagement.com
newsletter.mrrafales.com
www.mylysoftware.com
nedimhozic.com
translate.nordija.com
nutriverse.world
start.nyby.no
panda-patrimoine.fr
app.paroty.me
dice.mswokk.pe.kr
phony.dev
portaldoadvogado.ai
sivaganga.rainbowsdroptaxi.com
admin.rokam.co
www.sasanakreasi.com
sateksa.com
www.scrapexport.com
www.shusteripartnery.com
hi.soltosoft.com
www.southaustraliatiling.com.au
ordering.sp2smalaysia.com
www.sphiverse.org
driver-sandbox.ssms360.com
www.standbylimos.com
bodamenaaraujo.swanmoments.com bodapelz.swanmoments.com xvalessandragiselle.swanmoments.com
tamoozmodern.com
florida-admin.tech-scheduler.com
thatsfax.com
thecodeflix.com www.thecodeflix.com
thegreat80s.com
television.theorygenerator.com
thierrybergeron.org
titanpuntales.com
tokokiosunggasku.com
tomerharari.com
tracktogomax.com
treepodia.com
member.uhas.com
app.webtrit.com
www.whenwemeet-calendar.com
windyapk.in
parnix.xcwalker.dev
open.yourip.com
ticket.yuzuyou.com
menu.zyprun.com
nursery-qa.zz2.co.za