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SECURITY SCORE
Certificate Information
Subject
CN=telfairelementary.com
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
December 11, 2025
Valid Until
March 11, 2026
30 days
Public Key
RSA
4096 bit
Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
F7:BE:B0:B8:34:20:9B:BA:FB:A9:14:F3:EA:42:06:FB:01:01:A2:7D:29:C3:01:8E:BE:31:81:E1:37:71:50:F9
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
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin
Permissions-Policy
Present
geolocation=(),midi=(),sync-xhr=(),microphone=(),camera=(),magnetometer=(),gyroscope=(),fullscreen=(self),payment=()
Recommendations
- • Add Content-Security-Policy header to prevent XSS attacks
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
90 domains
viessmann.academy
*.viessmann.academy
tecswitches.com
*.tecswitches.com
telefono.center
*.telefono.center
telfairelementary.com
*.telfairelementary.com
telo.guru
*.telo.guru
tenantsverify.com
*.tenantsverify.com
tenbudou.com
*.tenbudou.com
the-furniture-outlet.uk
*.the-furniture-outlet.uk
theanswers.info
*.theanswers.info
thelittlejute.co.uk
*.thelittlejute.co.uk
therigtnt.com
*.therigtnt.com
thetimeofourlies.com
*.thetimeofourlies.com
thewhitbyphotographer.co.uk
*.thewhitbyphotographer.co.uk
thewhitehousesupply.com
*.thewhitehousesupply.com
thirstytopher.fun
*.thirstytopher.fun
thiscatholichome.com
*.thiscatholichome.com
thomaslanedesign.co.uk
*.thomaslanedesign.co.uk
thorplaymarketing.com
*.thorplaymarketing.com
those-who-wander.com
*.those-who-wander.com
ti-pai.com
*.ti-pai.com
tiktokfreefans.com
*.tiktokfreefans.com
timesindia18.com
*.timesindia18.com
tinderxxx.com
*.tinderxxx.com
todonombres.org
*.todonombres.org
toptoon.life
*.toptoon.life
toptopi.com
*.toptopi.com
tormenterasdelcaribepr.com
*.tormenterasdelcaribepr.com
trangcacuocbongdavn.com
*.trangcacuocbongdavn.com
tristarfordkittanning.com
*.tristarfordkittanning.com
trolleypubct.com
*.trolleypubct.com
tucao.cool
*.tucao.cool
unisupdi.education
*.unisupdi.education
ushomemaintenance.com
*.ushomemaintenance.com
valorant.house
*.valorant.house
vinylbus.com
*.vinylbus.com
viperpartsofamerica.com
*.viperpartsofamerica.com
viralusastories.info
*.viralusastories.info
virtu.games
*.virtu.games
visionzambia.co.uk
*.visionzambia.co.uk
vitalitymassageonline.com
*.vitalitymassageonline.com
vivi-water.com
*.vivi-water.com
vlone.life
*.vlone.life
voacorp.com
*.voacorp.com
vodo.finance
*.vodo.finance
vodonagrivach.com
*.vodonagrivach.com
Other domains in certificate