What is Semrush Domain Authority Score and How It Works

If you’ve used Semrush before, you may have come across Authority Score. In this article, we’ll explain what Authority Score measures and how it can help you when making marketing decisions.

What Is Semrush Authority Score?

Semrush Authority Score is our compound metric used for measuring a domain’s or webpage’s overall quality and SEO performance. It’s based on a series of metrics that prove trustworthiness and authority.

You can find this score when researching a domain or webpage in Domain Overview, Backlink Analytics, Backlink Audit, or the Link Building Tool on Semrush.

How Is Authority Score Calculated?

Authority Score is the result of calculations that uses AI and machine learning to measure a domain’s authority based on three facets.

Those three are:

1. Link Power: quality and quantity of backlinks
2. Organic Traffic: estimated monthly average of organic search traffic
3. Spam Factors: indicators of a spammy vs. natural link profile

Each facet has a different weight on the score. Link Power holds the most weight. Organic traffic holds the next heaviest weight.

The Spam Factors metric is actually made up of six checks:

1. No organic rankings on SERPs
2. Unnaturally high % of dofollow domains
3. An imbalance between links and organic traffic
4. Too many referring domains with the same IP address
5. Too many referring domains with the same IP network
6. Presence of another domain with an identical backlink profile

If we detect one of these, it subtracts points from a domain’s final...