The three headline numbers, from Moz's own index
Enter any domain or URL and this tool returns three numbers pulled live from Moz's Links API: total external links pointing at it, the number of distinct root domains those links come from, and the resulting Domain Authority score. These are the same underlying metrics SEOs have relied on from Moz for years, just surfaced here without needing a Moz subscription of your own.
Why "linking root domains" matters more than raw link count
A hundred links from one single website generally carries far less weight with search engines than the same hundred links spread across a hundred different domains. Search engines treat links from distinct, independent sites as stronger evidence of real-world endorsement than many links clustered on one source - which is exactly why this tool highlights linking root domains as its own separate number rather than only showing the total link count.
A summary, not a full list
This tool is intentionally built for a fast health check - the three numbers, nothing more. If you need to see the actual individual pages linking to a URL (to find specific link-building opportunities, audit who is linking to you, or check for spammy links), use the companion Backlink Extractor tool on this site, which lists out the real linking pages rather than just the totals.