DNS Gurus
Cached · just now
79/100 SECURITY SCORE

Certificate Information

Subject
CN=nthu11.xyz
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
January 27, 2026
Valid Until
April 27, 2026 78 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
E7:01:3E:D1:E5:43:F4:CD:47:EE:11:3B:8B:71:64:36:50:AD:3C:27:1C:57:C5:92:86:E0:31:FF:7E:FD:4E:16
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
Good
SAMEORIGIN
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-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
finetools.com.au *.finetools.com.au *.ww16.finetools.com.au *.ww17.finetools.com.au

Other domains in certificate

bearoffers.net *.bearoffers.net *.www.bearoffers.net
*.2025.bili-distribution.com *.api.bili-distribution.com *.app.bili-distribution.com bili-distribution.com *.bili-distribution.com *.demo.bili-distribution.com *.hub.bili-distribution.com
*.citrix.lia.com.pl *.hostmaster.lia.com.pl *.imap.lia.com.pl lia.com.pl *.lia.com.pl *.mail.lia.com.pl *.mail6.lia.com.pl *.mailx.lia.com.pl *.mta-sts.lia.com.pl *.mx4.lia.com.pl *.owa.lia.com.pl *.webmail.lia.com.pl *.www.lia.com.pl
*.1.criteriumdescevennes.com *.api.criteriumdescevennes.com *.app.criteriumdescevennes.com *.b.criteriumdescevennes.com *.cloud.criteriumdescevennes.com criteriumdescevennes.com *.criteriumdescevennes.com *.desktop.criteriumdescevennes.com *.dev.criteriumdescevennes.com *.gowww.criteriumdescevennes.com *.intranet.criteriumdescevennes.com *.m.criteriumdescevennes.com *.new.criteriumdescevennes.com *.ra.criteriumdescevennes.com *.rd.criteriumdescevennes.com *.rdp.criteriumdescevennes.com *.rds.criteriumdescevennes.com *.rdweb.criteriumdescevennes.com *.rdweb1.criteriumdescevennes.com *.remote.criteriumdescevennes.com *.shop.criteriumdescevennes.com *.sitemaps.criteriumdescevennes.com *.ssl.criteriumdescevennes.com *.ts.criteriumdescevennes.com *.wildcard.criteriumdescevennes.com *.ww1.criteriumdescevennes.com *.ww11.criteriumdescevennes.com *.ww2.criteriumdescevennes.com *.ww25.criteriumdescevennes.com *.www.criteriumdescevennes.com
gaigoi.us *.gaigoi.us
mujiusa.com *.mujiusa.com
multicast.com.au *.multicast.com.au
netflu.online *.netflu.online *.ww25.netflu.online *.ww38.netflu.online
*.admin.nthu11.xyz nthu11.xyz *.nthu11.xyz *.ww25.nthu11.xyz *.ww38.nthu11.xyz *.www.nthu11.xyz
parentseveningsysten.co.uk *.parentseveningsysten.co.uk
pennmed.com *.pennmed.com *.ww1.pennmed.com *.ww2.pennmed.com *.www.pennmed.com
peppermintgrove.com.au *.peppermintgrove.com.au
prestamodeoliva.es *.prestamodeoliva.es
slides.com.au *.slides.com.au
velkykrtis.sk *.velkykrtis.sk
versicherungen-abc.de *.versicherungen-abc.de