Domain Rating (DR), Domain Authority (DA), and Trust Flow (TF) are proprietary metrics used to compare aspects of backlink profiles. They are produced by different SEO platforms, use different data sets, and are not Google ranking factors.
Domain Rating (DR)
Ahrefs’ Domain Rating is a logarithmic 0-100 score that reflects the relative strength of a website’s backlink profile. It is driven primarily by the number and strength of unique referring domains and how link equity is distributed within Ahrefs’ model.
Domain Authority (DA)
Moz’s Domain Authority is a comparative 1-100 score that estimates how likely a domain is to rank relative to other domains using Moz’s link index and machine-learning model. It is best used for comparison inside Moz, not as a target or a Google score.
Trust Flow (TF)
Majestic’s Trust Flow is a 0-100 score that estimates link quality through a site’s relationship to Majestic’s manually reviewed trusted seed set. Topical Trust Flow adds subject categories to that link analysis.
How to Use the Metrics
- Compare sites within the same market and the same provider’s index.
- Investigate material changes in referring domains and link quality.
- Screen outreach prospects before a manual relevance and editorial review.
- Track campaign context with dated before-and-after snapshots.
What the Metrics Cannot Tell You
None of these scores guarantees rankings, traffic, conversions, indexing, or a Knowledge Panel. They also do not replace technical audits, content quality, search intent, user experience, or direct business measurements. Treat them as diagnostic indicators within a broader SEO analysis.
