Ahrefs Prepares DR4 Update, Overhauling How Domain Rating Is Calculated

Ahrefs is rolling out a new version of its Domain Rating metric, and domain investors who lean on DR to value aftermarket names should take note before the change goes live on December 1.

The update, called DR4, was announced last week by Glen Allsopp of Detailed, the SEO research outfit that Ahrefs acquired. Allsopp posted the news on X, describing DR4 as a new model for scoring backlink profiles. Two changes stand out. First, subdomains will now receive their own individual rating instead of inheriting the score of the root domain. Allsopp used Ahrefs' own help desk as an example, noting it carries a DR of 75 while the root ahrefs.com domain sits at 92, a gap that the current model does not reflect. Second, the pool of domains that factor into DR calculations has been cut roughly in half, down to about 132 million. According to Allsopp, Ahrefs' internal testing shows DR4's correlation with Google rankings is more than 2.5 times stronger across all hosts than the existing model produces.

Ahrefs has published a preview page where users can enter any domain, including ones they are evaluating for purchase, to see how its score might shift under the new system. Sean Markey of Domain Name Wire ran several names through the tool to illustrate the range of outcomes. DomainNameWire moved from 79 to 82, NameBio from 76 to 79, and DNJournal saw one of the larger jumps, climbing from 81 to 89. Markey's own site, Ranks, rose from 38 to 46. Not every domain gained ground, however. Atom dropped slightly from 90 to 89, and DomainSmoke fell from 27 to 25, showing that the recalculation can push scores in either direction depending on a domain's specific backlink makeup.

Impact

For domain investors, the practical impact centers on valuation. DR has long served as a quick proxy for a domain's perceived authority in aftermarket pricing discussions, and any shift in methodology that changes scores by several points, up or down, can affect how a name is marketed or negotiated in the weeks around the rollout. The subdomain change in particular could matter for portfolio owners whose assets include subdomains that have been riding on a parent domain's inflated score. Separating those ratings means some subdomains will likely see sharp corrections once DR4 becomes the default.

The article is careful to frame DR's broader significance in context. As a senior editor at a trade publication covering domain investing day to day, the point worth underscoring for readers already fluent in this space is one the source itself makes plainly: DR remains a single, proprietary, logarithmic score from one SEO tool, meant to approximate authority based on the sites linking in. It does not measure or guarantee search rankings. A site can carry a high DR, including one inflated through paid link gigs on platforms like Fiverr, and still generate minimal organic traffic. For anyone buying or selling domains based primarily on DR, that distinction matters more than the specific number produced by any model version.

What to watch

Domain investors and brokers should run their active listings and watchlist domains through the DR4 preview tool before December 1, when the new model becomes the default scoring system. Expect some listings to see meaningful upward or downward repricing once DR4 scores replace the current figures, particularly for portfolios built around subdomains that previously shared a parent domain's score. Buyers evaluating aftermarket names should treat DR, old or new, as one data point among several rather than a stand-alone valuation metric, and should be skeptical of any site whose authority appears to rest on purchased link placements rather than organic traffic performance. Those who track SEO tool metrics more broadly may also want to watch whether Moz, Majestic and Semrush make comparable adjustments to DA, TF/CF and Authority Score in response to Ahrefs' recalibration.

Marketers who rely on an auto backlink tool to build links should review their link metrics once Ahrefs rolls out the DR4 changes.

Many SEO professionals who rely on a seo backlinks builder tool will want to review how the DR4 changes could affect their link-acquisition metrics and reporting.

Since Domain Rating has long been used as a shorthand for link profile strength, many SEO professionals worry that changes to the formula could shift how they evaluate sites they plan to get backlinks from.

Source: Domain Name Wire

Earlier in this series: Google Rolls Out November 2026 Broad Core Update