What is Domain Authority?
Domain Authority (DA) is a search engine ranking score developed by Moz that predicts how well a website will rank on search engine result pages (SERPs). A Domain Authority score ranges from one to 100, with higher scores corresponding to a greater ability to rank.
Domain Authority is calculated by evaluating multiple factors, including linking root domains and number of total links, into a single DA score. This score can then be used when comparing websites or tracking the “ranking strength” of a website over time. Domain Authority is not a metric used by Google in determining search rankings and has no effect on the SERPs.
You can view a website’s DA by using MozBar (a free Chrome-extension), Link Explorer (a backlink analysis tool), the SERP Analysis section of Keyword Explorer, and dozens of other SEO tools across the web.
How is Domain Authority scored?
We score Domain Authority on a 100-point logarithmic scale. Thus, it’s significantly easier to grow your score from 20 to 30 than it is to grow from 70 to 80.
What is a “good” Domain Authority?
Generally speaking, sites with a very large number of high-quality external links (such as Wikipedia or Google.com) are at the top end of the Domain Authority scale, whereas small businesses and websites with fewer inbound links may have a much lower DA score. Brand-new websites will always start with a Domain Authority score of one.
Because Domain Authority is meant to be a predictor of a site’s ranking ability, having a very high DA score shouldn’t be your only goal. Look at the DA scores for the sites you’re directly competing with in the SERPs and aim to have a higher score than your competitors. It’s best used as a comparative metric (rather than an absolute, concrete score) when doing research in the search results and determining which sites may have more powerful/important link profiles than others. Because it’s a comparative tool, there isn’t necessarily a “good” or “bad” Domain Authority score.