DR is calculated similarly to Google's original PageRank concept — it factors in both the number of unique referring domains linking to a site and the strength of those linking domains' own backlink profiles, on a logarithmic scale where higher scores get progressively harder to move. DR is one of the most commonly cited authority metrics in SEO conversations and case studies (a growth story often leads with 'DR went from X to Y'), largely because Ahrefs' tool is widely used, but it measures backlink strength specifically — not overall site quality, content strength, or traffic, all of which can lag or lead DR independently. A site can have a strong DR from a small number of very powerful links, or a weaker DR despite many links from mediocre sites, so DR alone doesn't fully describe a link profile's health.
Example
A startup's DR grows from 8 to 24 in four months after a structured guest-posting and digital PR campaign lands 15 links from established industry publications.
Related terms
- Domain Authority (DA)
- Authority Score
- Backlink Profile
- Referring Domain
- Digital PR
- Backlink
- PageRank
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