What Is Domain Rank? DataForSEO's Authority Metric, Explained

Every publisher site in the AuthoritySource.ai marketplace shows a Rank figure. It comes from a single source — DataForSEO — and it answers one narrow question: how strong is this site's backlink profile compared to the rest of the web?

Where the number comes from

We call DataForSEO's Backlinks Summary endpoint for each publisher domain (subdomains included). Among the fields it returns is rank, DataForSEO's own authority metric, computed from their crawl of the web's link graph.

That single API call also gives us total backlinks, referring domains, and spam signals, so authority and link volume are always measured on the same crawl at the same moment.

How Domain Rank is measured

Domain Rank is a link-graph metric, not a traffic metric. In plain terms:

It counts how many unique domains link to the site.
It weighs each of those links by how authoritative the linking domain itself is — authority flows through the graph, so a link from a strong site is worth many links from weak ones.
It is iterative: a site's rank depends on the rank of its linkers, which depends on theirs, and so on until the values settle. This is the same family of math as the original PageRank idea.
It is logarithmic in feel: climbing from 20 to 30 takes far less link equity than climbing from 70 to 80. The top of the scale is thin by design.

What it does not measure: content quality, topical relevance, editorial standards, organic traffic, or whether Google likes the site. Those are handled by other parts of our Site Score and by the match score.

Why we show 0–100 instead of 0–1000

DataForSEO returns rank on a 0–1000 scale. Our Site Score and match score are both 0–100, and showing a third scale next to them was confusing — a rank of 603 next to a score of 83 reads as if the site is failing.

So we apply one transformation, and only one:

displayed rank = round(DataForSEO rank / 10)

A raw 603 becomes 60. A raw 884 becomes 88. Nothing else is adjusted — no calibration, no blending with another provider, no estimation. Divide by ten, round, display. If you ever want the provider's native figure, multiply what you see by 10.

What it is not

Not Ahrefs DR. Different crawlers see different link graphs. A site can sit at 60 with us and 55 or 68 elsewhere. Comparing across providers is apples to oranges.
Not a Google metric. No search engine publishes an authority number. Every one of these scores is a third-party model.
Not a ranking guarantee. High rank means the site has accumulated link equity. It says nothing about whether a placement there will move your keyword.

How Rank feeds the Site Score

Inside our 0–100 Site Score, authority strength carries a 25% weight, and Rank is the larger half of that component (referring domain count is the other half). We map it logarithmically rather than linearly, so mid-range sites are not crushed by a handful of giants — the difference between a 35 and a 55 matters more to the score than the difference between a 75 and a 95.

You will see the same number in three places: the marketplace table, the site detail page, and — for publishers — your own site's metrics tab.

How to read it as a buyer

Use Rank as a floor, not a verdict.

Set a minimum that matches your goal. For competitive commercial terms, most buyers want 40+. For topical reinforcement and AI citation coverage, a 25 with tight relevance often outperforms a 60 that is off-topic.
Read it beside organic traffic. High rank with almost no organic traffic can indicate an aged domain living off old links.
Let the match score break ties. Between two sites at similar rank, relevance is what determines whether the placement reads naturally and gets cited.

A strong link profile gets a page indexed and trusted. Relevance is what makes it count.

How to read it as a publisher

Rank refreshes when we re-pull metrics for your site. It moves slowly — that is expected, because the underlying link graph moves slowly. The fastest levers are earning links from new referring domains rather than more links from domains that already point to you.