DNS Gurus
Cached · just now
76/100 SECURITY SCORE

Certificate Information

Subject
CN=okuldefteri.net
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
December 14, 2025
Valid Until
March 14, 2026 61 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
DC:E8:A6:D2:05:C3:ED:17:53:50:D8:F0:FA:DE:17:3F:37:8E:14:06:53:AF:88:70:97:4B:74:5D:02:A9:09:F2
Alternative Names
90 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
Missing
Not configured
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
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • 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

90 domains
mcm888.bet *.mcm888.bet *.admin.mcm888.bet *.airflow.mcm888.bet *.api.mcm888.bet *.assets.mcm888.bet *.backup.mcm888.bet *.dashboard.mcm888.bet *.demo.mcm888.bet *.dev.mcm888.bet *.llm.mcm888.bet *.m.mcm888.bet *.marketing.mcm888.bet *.qa.mcm888.bet *.qmylrv2.mcm888.bet *.secure.mcm888.bet *.staging.mcm888.bet *.stg.mcm888.bet *.test.mcm888.bet *.v2.mcm888.bet *.web.mcm888.bet *.www.mcm888.bet

Other domains in certificate

*.2p.4kfm.com 4kfm.com *.4kfm.com
abzartokyo.com *.abzartokyo.com
balicaps.com.br *.balicaps.com.br *.ns2.balicaps.com.br *.ns3.balicaps.com.br *.seguro.balicaps.com.br *.ww38.balicaps.com.br
*.admin.biharwap.in *.api.biharwap.in *.app.biharwap.in *.auth.biharwap.in *.backend.biharwap.in *.bhojpuri.biharwap.in biharwap.in *.biharwap.in *.cpanel.biharwap.in *.cpcalendars.biharwap.in *.demo.biharwap.in *.desi.biharwap.in *.dev.biharwap.in *.extranet.biharwap.in *.mail.biharwap.in *.notexistsbhojpuri.biharwap.in *.notexistswap.biharwap.in *.notexistswebdisk.biharwap.in *.old.biharwap.in *.server506.biharwap.in *.site.biharwap.in *.vpn.biharwap.in *.webdisk.biharwap.in *.webmail.biharwap.in *.wiki.biharwap.in *.wwe.biharwap.in *.www.biharwap.in
cambopop.com *.cambopop.com
car-scissor-jack-ca.com *.car-scissor-jack-ca.com
encurtado.com.br *.encurtado.com.br *.ns1.encurtado.com.br *.ns2.encurtado.com.br
igrejaunidajuazeiroba.com.br *.igrejaunidajuazeiroba.com.br *.ns1.igrejaunidajuazeiroba.com.br *.ns2.igrejaunidajuazeiroba.com.br *.ns3.igrejaunidajuazeiroba.com.br
*.ns1.okuldefteri.net *.ns2.okuldefteri.net okuldefteri.net *.okuldefteri.net *.sefguvenlik.okuldefteri.net
*.ch.xhbi.xyz *.cicd.xhbi.xyz *.ge.xhbi.xyz *.id.xhbi.xyz *.jp.xhbi.xyz *.secure.xhbi.xyz *.sql.xhbi.xyz *.us-west-2.xhbi.xyz *.ww25.xhbi.xyz xhbi.xyz *.xhbi.xyz *.zh.xhbi.xyz