DNS Gurus
Open Cached · just now
77/100 SECURITY SCORE

Certificate Information

Subject
CN=sjnarmstrong.com
Issuer
C=US, O=Google Trust Services, CN=WR3
Valid From
November 27, 2025
Valid Until
February 25, 2026 88 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
55:F3:E5:27:7A:6F:8B:80:78:6D:9C:42:94:EA:19:12:F2:13:46:3F:80:44:3F:95:94:2D:EF:5B:CE:3E:60:BA
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
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
social-wall.additive-apps.eu staging.marketing-cloud.additive-apps.eu

Other domains in certificate

abikoutsi.fi
admin-dev.acroworld.de
aeroclubcrepyfeigneux.fr
all4ucleaning.ca
andrzejspostservice.com
aniketyadav.dev
arrowwealthadvisory.com
peopletrezero.beaconforce.com
demo.bookline.io
brisasdelprado.com
www.campograndecc.com.ar
www.catinaboxgames.com
www.ccintl.cc
registry.chapeldragonfly.com
api.charitysuite.dev
www.chrisbehr.com
kbg.com.kw
onebook-remote-controller-dev.oneclass.com.tw
conorlawlormurphy.com
construccionszamoski.com
courseplan.io
gameon.critgames.com
www.dcsunity.com
denzelmensah.com
link.dmdice.xyz
dukestreetvermillion.com
dungeonscreen.com
www.edocoh.com
educationandmigration.com.au
efectotu.co
www.elliottwitty.com
personal.first-iraqi-bank.co
staging.chile.fitpass.app
forgottenchain.com
forherplaylist.com
minibank.heasoft.com
go.dwindle.hexsw.com
report.hotelambi.com
portal.hyfort.com
indicium.hu
actions.instrumentive.com
jamieson.app
www.jkithome.com
kaituri.com
karimcossutti.com
eskuvo.keszicsalad.hu
admin.khanakhata.com
kranz.co.uk
gunilla.labtrino.se
www.lachevaliniere.com
jobs.letsfame.com
weblink.magical.app
dev.magnesconnect.com
www.mariaisabelvega.com
honeybee.marktsebastian.com
marmicode.fr
www.mengky.com
mielopolis.it
dna.minds2xcel.com
hml.navigatetrip.com
opalith.co
www.ostadvantage.com
www.otwsg.com
site-demo.pandodev.com
app.pgastats.com
platypuslabs.llc
powermart.in
pie-a-la-mode.rainingknowledge.com
www.rnksunsystems.com
www.samesamerestaurant.com.au
scriim.com
scriptbox.ca
seit-april-2024-taeglich-abgeaenderte-adhs-zusammenfuehrung.de
clock.simonlary.dev
www.eltern.simpleclub.com
sjnarmstrong.com
backoffice.skillscore.soylatte.skooldio.com
specter.mx
timer.stiles.dev
web.stockifi.io
premix.suitefeedback.com
www.superiorceramica.com
swingleft.nyc
www.tgitconsulting.com.au
thethoughtcare.com
link.thisismy.computer
forms.thrasker.com
aprovacao.thumbz.com.br
tikimirage.com
storkwind.timokurtz.de
www.treelc.com.au
www.twilightpark.art
www.us-canteen.com
www.veronicaelegants.com
exif.vmog.net
fieldmonitor.wedevnow.com
www.westcliffathleticscamps.com
dev.zicplug.com