89/100 SECURITY SCORE

Certificate Information

Subject
CN=billing.rentalcarmanager.com
Issuer
C=US, O=Let's Encrypt, CN=E7
Valid From
January 07, 2026
Valid Until
April 07, 2026 62 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
7F:63:C8:12:7F:3B:63:BB:5A:A4:DD:FD:2E:4C:55:83:34:D4:23:C1:98:31:72:16:89:24:E1:2B:54:00:4E:22
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

87 domains
client.bc-tek.com

Other domains in certificate

books.adg.africa
factura.aircargoandmore.com
books.ardee.com
books.artesanatile.com
books.beyondthankyou.com
books.biztec.us
payments.blueneck.ca
clienthub.bmorerad.com
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books.cakedupuc.com
sas.carenfix.com
books.caselove.com
books.ccwtech.com
admin.cintapcloud.com
books.cititech.co.za
client.ckgprospects.com
account.arete.co.ke
payments.comelectronics.com
billing.computerguy.tech
books.conciercare.net
accounts.connecttrainme.com
books.consumerexp.com
books.cytocrom.mx
easternlogic.digitalcfo.my
contabilidad.digitalconquest.mx
billing.dvyns.com
billing.eurekaretail.com
books.exhibitadiscovery.com
books.fastzeal.com
login.gassupplies.co.za
clientes.gruporhc.com
book.gtengineparts.com
client.haemelew.com
books.hamc.ae
account.hawaiitech.ninja
books.idgs.my
books.improve.co.jp
partner.intotosystems.com
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books.key-advisory.com
books.klunscher.ae
books.koobs.cafe
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facturation.laitdelice.nc
accounts.lawctopus.com
clients.legaladvis.com
books.leitasteel.co.za
pay.linebip.com
accounting.linesicecream.com
books.mahattamultimedia.com
books.majhamorya.in
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online.mobistore.co.nz
books.namastefurniture.com
accounts.nettrust.nz
books.ohiovalleytechnology.net
books.optoapp.com
billing.oriondigital.io
billing.ortegalive.com
erp.pacifictechnologies.mv
books.palcare.com
finance.patodi.in
finanzas.phmarquistower.com
accounts.plantveda.com
books.primeluxenergy.com
books.progrc.com
connect.propertysupport.co
erp.ptldistribution.com
books.puntonodal.mx
billing.rentalcarmanager.com
accounting.rowanberries.com
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vp.sealanguages.com
billing.seproz.com
accounts.servantecglobal.com
books.softwareidm.com
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controle.talkradio.com.br
book.travao.co.uk
dossier.travelnepal.nl
account.troyerwebsitesoftexas.com
accounts.turnkeyfo.com
books.updraft.digital
accounting.vitalismetabolic.com
client.webo3.ca