Look up Moz Domain Authority, Spam Score and referring domains for any site. Three checks a day, free.
Domain Authority is Moz’s model predicting how likely a domain is to rank, scored 1–100 on a logarithmic curve. Google does not use it, has never used it, and has said so repeatedly. It is useful for one thing: comparing sites against each other. Moving from DA 20 to 30 is achievable; 70 to 80 represents an enormous difference in link equity.
No. DA is a third-party metric built by Moz to approximate ranking strength. Google has confirmed many times that it has no equivalent internal site-wide authority score that it exposes.
It depends entirely on your competition. In a niche where the top ten sit at DA 25, a DA 35 is strong. In finance or health, DA 60 is table stakes. Compare against the sites currently ranking for your terms, not an absolute number.
By earning links from relevant, authoritative sites — the same thing that improves actual rankings. Chasing DA directly, through link schemes or bought links, raises Spam Score and risks a penalty.
The percentage of sites with similar features that Moz observed being penalized. Under 4% is normal. Above 7% is worth investigating — usually thin content, an unnatural anchor profile, or low-quality inbound links.
Each lookup is a paid API call to Moz. Three a day covers genuine research; unlimited checks are available with an email, and RankVault customers get DA on every marketplace listing automatically.
RankVault's marketplace shows Domain Authority, Spam Score and verified Search Console traffic on every listing — so you are not evaluating a publisher on a screenshot.