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Subdomains vulnerability checks
Subdomains vulnerability checks
Stéphane Puthod avatar
Written by Stéphane Puthod
Updated over a week ago

By classifying your own domains, OnDOMAIN will not only show you possible threat at the Top Level Domains, but also at the Sub Domains Level.

To get to it. Click on a domain that you own and scroll down to the subdomains section. If no subdomains are detected by OnDOMAIN then it won't be shown.

Here is an example:

Details of vulnerability checks:

  • CNAME: Does this domain point to another Domain name using a cname? (OnDOMAIN will check where it is pointed to and alerts you if it is not associated to anything or no longer under your control).

    Green Dot: No CNAME/Pointed to an IP.

    Red Dot: Dangling CNAME - Not pointed to anything.

  • SPF: Is the subdomain setup to send Emails?

  • MX: Is the subdomain setup to receive Emails?

  • IP reputation: Checks all IPs associated with the subdomain against threat feeds to make sure there are no issues.

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