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Free backlink checker: who links to you?
Enter a site to see how many other sites link to it, how many links they send and which of them carry the most weight, with an authority score from DataForSEO.
Free, no signupWhat the backlink checker shows
How many separate sites link to yours (referring domains), how many links they send in all (backlinks), and an authority score from 0 to 100. Under them, the five strongest sites that link to you, each with its own authority score.
Give your email and the full list opens: up to 100 linking sites, one link from each, strongest first, with the anchor text, whether the link is nofollow and when it was first seen.
Referring domains or backlinks: which to watch
A site that links to you from the footer of every page can send thousands of backlinks and still be one referring domain. That is why this page leads with referring domains.
The authority score works the same way: a link from a site with strong links of its own adds more than one from a site nobody links to. So the strongest referring domains are listed by their own authority score.
Common questions
Where does the link data come from?
DataForSEO's backlink index. Every link tool runs its own crawler, so the counts here won't match Ahrefs, Semrush or Moz exactly. Compare sites using one tool's numbers.
What is the authority score?
DataForSEO's rank for the domain, a measure from 0 to 1,000 built from the links pointing at it, divided by 10. It isn't Moz's Domain Authority or Ahrefs' Domain Rating, which come from their own indexes.
Why does a link I know about not show?
It has not been crawled yet, or the page that carried it has changed. The list shows one link per site, the strongest, so a second link from the same site is folded into it.
Is it free?
Yes, with no signup. The full list asks for your email. A site checked in the last 7 days shows its saved result.
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