Domain Ranking (DR) is actually a proprietary SEO metric by Ahrefs. It represents the energy of the website’s backlink profile on the logarithmic scale from 0 to one hundred, with the latter getting the strongest. https://docs.google.com/forms/d/1D1s52WgTFdVTiyWT6wMoaucjDByH-rfsFEiqgRo6uew/edit