DNS Gurus

SSL Verification Bypassed

The server's SSL certificate could not be verified. The analysis was completed using insecure mode. Data may be less reliable.

Reason:

Hostname Mismatch - certificate is issued for datavisiontech.brickftp.com, datavisiontech.exavault.com, datavisiontech.files.com, ftp9.datavisiontech.com, not for ftp.datavisiontech.com

Cached · just now
91/100 SECURITY SCORE

Certificate Information

Subject
CN=ftp9.datavisiontech.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
December 02, 2025
Valid Until
March 02, 2026 20 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
DD:63:D4:12:F3:D5:01:37:38:BB:20:D2:DB:D6:C6:77:67:5D:C1:04:B6:AE:DD:75:DE:2F:24:BF:36:B9:ED:2F
Alternative Names
4 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
Present
max-age=631139040; includeSubdomains; preload;
Content-Security-Policy
Basic
base-uri; block-all-mixed-content; child-src; +12 more
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
same-origin
Permissions-Policy
Present
geolocation=(), midi=(), sync-xhr=(), microphone=(), camera=(), magnetometer=(), gyroscope=(), fullscreen=(self), payment=()
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'

CAA Records (Certificate Authority Authorization)

CAA Records
Configured (Restricts certificate issuance)
Current Issuer
Authorized (Matches CAA policy)
Authorized CAs
letsencrypt.org
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