Backlinks on SEMrush can be analyzed in two main areas: Backlink Analytics (for studying competitors) and Backlink Audit (for auditing your own links).
It is not uncommon to see a different number of total backlinks displayed in Backlink Analytics and Backlink Audit for the same domain. The difference between these two numbers comes down to a couple of reasons:
Our Backlinks Analytics database is updated to show you the backlinks that our bot saw in the last 3 months of crawling the Internet. We call this our “Fresh index.”
All the backlinks data that we have gathered was from our own sources and not through third parties, making our database as accurate as possible.
Although we cannot guarantee that we can find every backlink on the Internet, the backlinks we do gather are more authoritative based on our trust signals. Our crawler is indexing constantly but the Internet is almost infinite. So, we’re more likely to crawl an authoritative domain first.
If you run a Backlink Audit campaign, we will gather your initial set of links from our Backlink Analytics reports, going back 3 months from the start your campaign. However, the "Lost" links from the Lost and Found tab represent links that have been lost over the past 2 months.
If you’re analyzing a large domain, Backlink Audit commonly will show a lower number of backlinks than Backlinks Analytics does.