SEOs and Webmasters sometimes forget, that by looking at a couple percent of the whole phonebook ("a percentage of all linking domains") you cannot extrapolate to the rest of the phonebook (i.e. know all the linking domains and their impact on the analyzed website.
A Backlink Profile Coverage of 100% is desirable because then all calculated complex metrics like DTOXRISK are more reliable.
In many cases, the really toxic links part of a Negative SEO attack or causing Google Penalties hide in the part that is in what "Complete Backlink Audit" adds, but not a "Basic Link Audit", and certainly not a "Trial Link Audit".
When looking at 5% of a Backlink Profile, you may get a completely "toxic" result for the domain, or a very good one, any possible outcome actually.
Doing such very partial audits was possible until the beginning of 2017 in LinkResearchTools (LRT), until we started to educate the market on the problems that come with that.
Even when looking at 50% of a Backlink Profile, you may, for example, get a completely "toxic" result for the domain, or an average one, any possible outcome actually still.
Doing such very partial audits was possible until the beginning of 2017 in LinkResearchTools (LRT), until we started to educate the market on the problems
The closer the Backlink Profile Analysis gets to 100%, the more reliable the result becomes. In the example below, you see that the small (missing) slice could be very toxic or very good still (as we would not know those domains). However, the impact on the overall analysis and DTOXRISK calculated will be very little.
The video below explains and gives above examples of how Backlink Profile Coverage is used and works also.