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SECURITY SCORE
Certificate Information
Subject
CN=mail.wizberg-os.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
January 15, 2026
Valid Until
April 15, 2026
66 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
DE:84:18:63:42:52:5E:A7:11:5B:60:B5:64:1A:D1:E4:86:AB:A1:84:A3:9E:B7:D3:02:37:1D:CD:62:A9:AE:B5
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=64072000; includeSubDomains; preload
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Content-Security-Policy header to prevent XSS attacks
- • 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
Configured
(Restricts certificate issuance)
Current Issuer
Authorized
(Matches CAA policy)
Authorized CAs
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts
- • Consider adding 'issuewild' records to control wildcard certificate issuance
Subject Alternative Names
85 domains
mail.garnettrose.com
mail.alkasser.sa
mail.allurespringfield.com
mail.alvania.es
mail.arhinspiredstudio.ro
mail.arrownetsylhet.com
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webmail.azoguemg.com
mail.ba-law.org
mail.brazpix.com.br
mail.budleiser.com
mail.bytesizedsites.com
mail.careforsyria.org
mail.cartoriopatriciarosapaes.com.br
mail.cetayadigital.com
mail.chezbrodeur.net
mail.clanmathis.com
mail.prolineservices.co.in
mail.infinitelogix.com.my
mail.baomar.com.om
mail.compassfamilyjourneys.com
mail.davisdigital.ca
mail.deepinnoline.com
mail.defo.tech
barua.delightsolutionsltd.com
mail.digitaport.com
mail.e-helper.app
mail.ecovisindonesia.com
mail.fullstackboston.com
mail.gasen.mx
webmail.globaldatasolutions.com
mail.greenoliveehr.com
mail.gwwsconsult.com
mail.hirozed.me
mail.imoto.hk
mail.improperties.ae
mail.indofen.in
mail.informationsafeguard.com
mail.intellitalent.co
mail.isteam.me
mail.itcass.net
mail.janakibharath.com
mail.keovation.co.za
mail.lamagroup.om
webmail.letsclinica.com.br
mail.livenode.tech
webmail.lmtextileprint.com
mail.loveumagazine.com
mail.lumoa.com
mail.lutonanglingclub.co.uk
mail.macawlimited.com
email.motazhad.com
mail.nbs.lk
mail.nioton.in
mail.orbitalairways.com
email.peakmountain-techsolutions.com
mail.pointsevent.com
mail.pridestylepro.com
mail.priyankshi.in
mail.rajbiosis.com
mail.reshamsutra.com
mail.rewoke.tech
mail.ridoutfamily.us
mail.rummathonroyale.com
mail.slnee.com
mail.slognus.com
mail.southern.vn
mail.sqbx.org
mail.startlinesoft.com
mail.studio2880.com
correo.subodega.mx
webmail.tanktestingservices.com
mail.technosoftcr.com
mail.terra-isles.com
daak.tresod.com
mail.ubmegypt.com
inbox.ultimatevirtualemployee.com
mail.vecctor.com.co
mail.vizsoft.in
mail.wiennexindo.com
mail.wizberg-os.com
login.wj-mail.com
mail.wlfddems.org
mail.zenithstrategies-zs.com
mail.zone-gagnon.info
Other domains in certificate