Backlinks Database: Qualitative Analysis

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We also performed the same comparison for the number of referring domains reported by each tool.


For referring domains, Moz found the highest number in 48% of cases, while Semrush came in second with 37% of cases. To understand what this means, we had to look at the quality found in each index.

We then looked at the qualitative characteristics of each backlink database.

Backlink coverage
While larger sites with huge volumes of monthly traffic may be switzerland telegram number database better placed to analyze their backlink profiles, smaller sites with comparatively low traffic levels often struggle to access relevant data, even if they have at least one backlink.

Semrush found at least one referring domain for 99.5% of all URLs analyzed – more than any other tool. Since we compared the same set of domains across tools, this means that Ahrefs, Moz, and Majestic are missing more data than Semrush in their backlink analyses.

Let's see what this means for the quality of backlink information in the market.

If Moz showed the most referring domains, is it the best provider when it comes to backlink analysis?
As we showed at the beginning of the study, Moz collected the highest total number of referring domains, but there's more to this data than just absolute numbers.

Semrush keeps its backlink database up to date by removing backlinks that haven’t been seen for six months. Moz doesn’t indicate when a backlink was last seen, so we used the Moz API to find out this information.