Analysing the link graph… this takes a few seconds.
See how strong any website is in the link graph — authority score, referring domains and global rank. No account, no limits on lookups.
Most authority scores are variations on one idea: a domain is important if important domains link to it. We compute harmonic centrality over the full open web link graph, then map it onto a 0–100 scale using a logarithmic curve — because the difference between rank 10 and rank 100 matters far more than between 1,000,000 and 1,000,090.
The score is not Moz's DA or Ahrefs' DR — those are each one company's number. Ours is computed with a transparent method (harmonic centrality) over our independent index of 118 million domains, which is exactly why we can give it away for free.
Authority does not rise in step with link count. In our data, domains scoring 30–39 have a median of 15 referring domains, while domains scoring 20–29 have 22. A handful of links from central, trusted sites outweighs hundreds from the periphery.
We published the full distribution across all 118 million domains — see the domain authority study.
Across 118M domains, 82.9% score below 10 and only 45 break 80. A 20 already beats ~97% of the web — compare to competitors, not giants. See the full distribution.
No — those are each one company's score. Ours uses harmonic centrality over our independent 118M-domain index. See the Moz and Ahrefs comparisons.
Yes — no account, no card, no trial. What domain authority means →