On November 5, 2026, Ahrefs announced DR4, the fourth version of its Domain Rating model. If your website's Domain Rating changes when the new model becomes the default on December 1, it does not automatically mean you gained or lost backlinks. Ahrefs is changing how it evaluates the links you already have.
Quick answer: DR4 still scores the relative strength of a backlink profile on a logarithmic 0–100 scale. The major differences are greater weight for links from websites with estimated organic search traffic, individual scores for subdomains, and a smaller pool of sites that meaningfully influence the metric.
What is Ahrefs Domain Rating?
Domain Rating, commonly abbreviated DR, is Ahrefs' proprietary estimate of how strong a website's backlink profile is compared with other sites in its database. The number runs from 0 to 100, and the scale is logarithmic. Moving from DR 80 to 81 is not comparable in difficulty to moving from DR 10 to 11.
DR is not a direct measurement of page quality, conversions, organic visits, revenue, or Google's opinion of your website. A site with excellent writing and relatively few links can have a modest DR. A site with an extensive link profile can have a high DR without attracting the audience you want. Our introduction to what Domain Rating measures covers the metric in more depth.
That distinction matters more than ever during a change of scoring model: a new DR figure is not itself a traffic gain or penalty.
What exactly changed in DR4?
1. Links from sites with organic search traffic receive more weight
DR4 continues to use backlink relationships, but Ahrefs now gives more consideration to links from websites and individual subdomains that it estimates receive organic search traffic. That is different from saying your own traffic directly determines your DR. The key distinction is the traffic estimated for sites linking to you.
2. Fewer websites have a DR4 score
Ahrefs reports that roughly half as many sites receive a rating under DR4 as under DR3. This does not mean half of the web disappeared or that every unrated site is spam. It means fewer domains participate meaningfully in the new model.
3. Subdomains receive their own scores
Under the previous model, many subdomains inherited their parent domain's rating. Under DR4, a hosted blog or documentation site is assessed on its own link profile. For example, an independent project at project.github.io should not be assumed to have the same backlink strength as GitHub itself. The guide to DR4 subdomain ratings explains what this means for blogs, help centers and hosted sites.
4. Spam-labeled domains can lose substantial DR
Ahrefs says spam-labeled domains previously in the DR3 30–70 range experienced median declines of approximately 15–20 points. However, a declining DR4 score does not prove that a specific site has been labeled spam: the entire calculation changed, and many legitimate sites may move.
When will DR4 replace DR3?
Ahrefs announced DR4 on November 5, 2026, with the standard Ahrefs interface scheduled to adopt it on December 1, 2026. Until then, the free Domain Rating API can return either model when requested explicitly. Ahrefs says DR3 will remain available via the API for a short period after the switch, without announcing an exact retirement date.
For dashboards and reports, record both the date and the metric version. A DR3 reading from November should not be joined to a DR4 reading in December as though both came from the same formula.
Does DR4 affect Google rankings?
No direct ranking change follows from Ahrefs recalculating its metric. DR4 is an Ahrefs measurement, not a Google update, and Ahrefs itself says there is no evidence that search engines use DR as a ranking factor. A lower DR4 might prompt you to inspect your backlink sources, but it does not establish that Google penalized your site.
Ahrefs did test how its scores correlate with Google rankings. Across a mixed sample of root domains and subdomains, DR4 correlated more strongly than DR3. For root domains alone, however, the older DR3 model performed better in Ahrefs' reported test. Correlation is not causation; our breakdown of what the DR4 ranking-correlation data says walks through the numbers.
How should website owners respond?
- Check DR3 and DR4 side by side for your own domain.
- Compare direct competitors under the same model rather than judging the size of your decline in isolation. The DR3 vs DR4 comparison explains why the two numbers are not interchangeable.
- Audit links from relevant publications, real communities, and websites with actual audiences.
- Track Google Search Console impressions, clicks, and rankings separately from Domain Rating.
- Save the pre-transition reading for context in future reports.
If your score fell, the DR4 drop diagnosis guide takes you through the checks in order.
You can start with the free Domain Rating checker on IndieTools, which returns DR3, DR4 and the change between them from one search, and consult Ahrefs' documentation for the current DR4 API options.
Frequently asked questions
Is DR4 a new Google algorithm?
No. DR4 is an update to an Ahrefs metric. Google's own ranking systems are separate.
Can a good website have a low DR4?
Yes. DR measures a backlink profile, not usefulness, product quality, or customer satisfaction.
Is DR4 already available?
Yes, through the Ahrefs Domain Rating API's dr4 version option as of November 2026. The main Ahrefs interface is scheduled to switch on December 1.
Will a lower DR4 automatically reduce referral traffic?
No. Existing visitors and links do not vanish when a third-party metric is recalculated.
Sources and further reading
- Ahrefs: Introducing a Preview of DR4
- Ahrefs: Free Domain Rating API
- Ahrefs Help: Do search engines use DR as a ranking factor?
Last fact-checked: November 6, 2026.
