DNS Gurus
Cached · just now
76/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 1
Let's Encrypt logo Let's Encrypt

Certificate Information

Subject
CN=netcity.online
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
February 20, 2026
Valid Until
May 21, 2026 89 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
7B:BF:92:13:12:2D:80:9C:A1:DE:4D:63:A3:AE:46:41:BF:5E:43:AA:D1:DD:E2:1C:84:C2:F4:A4:A0:51:19:29
Alternative Names
89 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 Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
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

89 domains
virtualities.com *.virtualities.com *.8-30-2000.virtualities.com *.hostmaster.virtualities.com *.mail.virtualities.com *.ww1.virtualities.com *.ww16.virtualities.com *.ww17.virtualities.com *.ww25.virtualities.com *.ww38.virtualities.com

Other domains in certificate

052003.shop *.052003.shop
08510.art *.08510.art
095422.co *.095422.co
ausceigh.com *.ausceigh.com *.fit.ausceigh.com *.profit.ausceigh.com
camping-pineta-urbino.it *.camping-pineta-urbino.it *.email.camping-pineta-urbino.it *.webmail.camping-pineta-urbino.it
egggolf.com *.egggolf.com *.remote.egggolf.com
*.dev.infosardinia.it infosardinia.it *.infosardinia.it *.www.infosardinia.it
*.11.liuma.com *.domain.liuma.com *.hostmaster.liuma.com *.i.liuma.com liuma.com *.liuma.com *.pool.liuma.com *.receiver.liuma.com *.www.liuma.com
*.alpha-bot.netcity.online *.dev.netcity.online *.n.netcity.online *.n4.netcity.online *.n5.netcity.online netcity.online *.netcity.online *.welcome.netcity.online *.ww25.netcity.online *.www.netcity.online
*.connect.selfo.com *.exchange.selfo.com *.gateway.selfo.com *.gp.selfo.com *.hostmaster.selfo.com *.receiver.selfo.com *.remote.selfo.com *.rustore.selfo.com *.secure.selfo.com *.secureconnect.selfo.com selfo.com *.selfo.com *.ssl.selfo.com *.ssl3.selfo.com *.studentsvpn.selfo.com *.test.selfo.com *.ww11.selfo.com *.ww16.selfo.com *.ww17.selfo.com *.ww25.selfo.com *.ww38.selfo.com
*.2fwww.studivz.at *.admin.studivz.at *.autodiscover.studivz.at *.client.studivz.at *.crm.studivz.at *.customer.studivz.at *.data-development.studivz.at *.demo.studivz.at *.ex02.studivz.at *.imap-mail.studivz.at *.mymail.studivz.at *.rfbbpvpngate.studivz.at *.smtp.studivz.at studivz.at *.studivz.at *.superset.studivz.at *.support.studivz.at *.wap.studivz.at