Open
Cached
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just now
89/100
SECURITY SCORE
Certificate Information
Subject
CN=zbooks.i-t-m.com
Issuer
C=US, O=Let's Encrypt, CN=E7
Valid From
December 14, 2025
Valid Until
March 14, 2026
37 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
C4:6E:CB:3E:1C:F6:A7:CD:66:EE:89:DC:F8:F7:8B:B6:7B:3E:85:26:5E:D0:7B:7D:B8:00:DC:43:93:0A:37:95
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
Excellent
DENY
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
90 domains
billing.fieldssmith.com
act.3dprintedmn.com
books.ablefs.com
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books.agncompu.com
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accounts.aquasolanor.com
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accounts.cadconcepts.co.nz
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finance.clicsinistre.com
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billing.fivestarsyokimau.co.ke
facturacion.dpt.com.pa
billing.que.com.sa
invoice.crccomputer.com
my.dencell.com
accounts.dimensionplus.in
books.drigusa.com
accounts.dwglobal.co.za
accounts.elansystems.co.za
books.eliteluxrealty.ae
dashboard.evolurise.cloud
fmp.fancymedia.com
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zo.first-bh.com
accounts.forethreat.com
books.future-horses.com
books.girlztomom.org
books.global-qa.co.uk
books.goldendeveloper.net
erp.ade.gov.mz
books.gratitudeatwork.ca
books.himamatrix.com
zbooks.i-t-m.com
books.idealtraits.com
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books.infinigence.me
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auth.le24.ca
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pay.lenders.co
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finance.ormeon.com
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invocies.preciseresearchsolutions.com
financials.respond1st.com
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books.royalelimousines.com.au
books.royalmaan.com
accounts.secureside.co.za
books.shriamuthampolymers.in
sales.skytekservice.com
books.solusta.com
books.songburdmusic.com
books.standingovations.com.au
accounts.stassnet.co.za
books.sthfinancial.com
accounts.subhikshacare.com
books.technologyblueprint.com
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books.tmcelite.ca
books.tpaconnect.net
treserp.tresengg.com
billing.twinarborlabs.com
books.unitedpartsinc.com
books.villasinbrazil.com
books.walkyourplansnwa.com
books.wavefrontconsulting.com
books.winclex.com
books.apps.iamn.wshn.co
accounting.xeostechservices.com
Other domains in certificate