What is an Organizational Domain?

When reviewing DMARC you will see "Organizational Domain" mentioned often. An Organizational domain is the top level domain (TLD) + 1 atom. For example:

  • support.agari.com = agari.com
  • agari.co.uk= agari.co.uk
  • just.an.example.ne.jp = example.ne.jp

DMARC will use publicsuffix.org for TLD list. 

 

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