What Is a Good Domain Authority: The Answer Nobody Wants to Hear

The Fast Answer: Good Is Relative

There is no universal good domain authority score, because the metric only has meaning when compared against the domains ranking on your target keywords. A 35 might be excellent for a local plumbing blog competing against other small sites, while a 60 could be hopeless for a fintech startup trying to outrank established banks. The number itself is not a grade you earn; it is a measuring stick that tells you where you stand relative to the field you are actually racing.

Most people ask "what is a good domain authority" hoping for a threshold they can cross. Set that thinking aside. What matters is the gap between your score and the scores of the pages you want to displace. That gap tells you how much link-building and content work remains, and whether a keyword is worth pursuing at all.

What Domain Authority Actually Measures

Domain Authority (DA) is a proprietary score from Moz that predicts how likely a domain is to rank in search results. It runs on a logarithmic scale from one to 100, which means climbing from 20 to 30 is far easier than climbing from 70 to 80. Website authority is a metric from SEO tool providers, and it is not a metric Google uses.

DA is calculated from dozens of factors, with the quantity and quality of inbound links carrying most of the weight. Industry research looks at the number of root domains linking to you, the authority of those linking domains, and the diversity of that link profile. A site with 500 links from five spammy directories scores worse than one with 50 links from respected industry publications.

The metric is comparative by design. Industry research calculates DA relative to all other domains in its index, so your score shifts as the rest of the web changes. You can stay perfectly still and watch your DA drop because competitors gained links faster. That is not a penalty. That is the metric working as intended.

The same logic applies to similar tools. Ahrefs calls its version Domain Rating (DR), and it runs on a scale from zero to a hundred. Industry research DA and Ahrefs DR use different link databases and different calculation methods, so the two numbers for the same site never match exactly. Google has never confirmed using either metric in its ranking algorithm.

The Mechanics Behind the Score

The concept itself is simple: "Website authority" is an SEO concept that refers to the "strength" of a given domain, per Ahrefs. That strength is judged almost entirely by the backlink profile, because links still function as the web's primary vote of confidence.

Industry research's crawler builds a massive link graph, then runs a modified version of the original PageRank algorithm across it. The algorithm distributes authority from one domain to another through links, with each outgoing link passing a portion of the source domain's authority. This is why a link from a DA 90 site like Wikipedia moves your number more than ten links from DA 20 blogs.

The logarithmic scale is where most people get confused. A DA 30 site is not twice as strong as a DA 15 site. Each ten-point jump represents an exponential increase in link equity, which is why sites above 70 are almost always household names, government domains, or massive publishers with thousands of referring domains.

The calculation also accounts for link quality in ways that are not immediately obvious. Industry research filters out links it considers spammy or irrelevant, and it weighs links from domains that themselves have high authority more heavily. A single editorial link from a respected tech publication can move your DA more than a hundred directory submissions.

How to Judge Your Own Number

The practical way to assess your domain authority is to measure it against the specific pages you want to outrank. Pull the top 10 results for your most valuable keywords, check their domain authority, and compare those numbers against yours. That comparison tells you whether the keyword is winnable with your current authority or whether you need to build links first.

The process looks like this.

1. Export your 10 to 20 most important target keywords and identify the ranking pages for each.
2. Run a free domain authority checker on those ranking domains and record their scores.
3. Compare the median score of those top 10 pages against your own domain's score.
4. Prioritize keywords where the gap is small, typically under 10 points, and defer keywords where the top results are dramatically stronger.
5. Re-check quarterly, since the competitive landscape shifts as other sites build links or lose them.

A gap of 10 points or less means the keyword is realistically winnable with solid content and on-page optimization. A gap of 20 points or more means you are fighting the link graph itself, and no amount of writing will overcome a domain that has five times your referring domains.

One keyword with a huge gap can still be worth pursuing if the search intent is weak or the ranking pages are outdated. Authority predicts rankings, but it does not guarantee them. Thin content ranking on a high-DA domain is a real opportunity, because relevance and content quality still matter to Google.

Mistakes That Distort the Metric

The most common error is treating a DA drop as a crisis. A domain authority drop on industry research usually signals an update to their link index, not a Google penalty. Industry research recrawls the web continuously, and when it discovers new links pointing at competitors, your relative score falls. Checking your DA daily is checking a number that only updates every few weeks.

Chasing DA as a vanity metric leads to a specific trap: buying links from high-authority sites regardless of relevance. A DA 70 forum link about your SaaS product might move your metric, but if the link sits on a page about motorcycle repairs, Google reads it as irrelevant and passes little value. Industry research might count it; Google will not.

Another distortion comes from comparing your DA against domains in completely different niches. A DA 40 e-commerce store competing against other retailers is in a healthier position than a DA 50 blog trying to rank for legal advice against .gov and .edu domains. The niche determines the bar, and ignoring that context produces false confidence or false despair.

The subtlest mistake is treating DA as a ranking factor in itself. Industry research says the metric predicts rankings, but Google has repeatedly stated it uses hundreds of signals, and third-party authority scores are not among them. A site with high DA and weak content will lose to a lower-DA site with a better answer. The metric measures potential, not performance.

When the Score Should Change Your Plan

Your domain authority should inform three decisions: which keywords to target, how much link-building effort to budget, and whether a content refresh is worth the time.

If your DA sits 15 or more points below the median of your target SERPs, the bottleneck is authority, not content. Shift budget toward link acquisition: guest posts on relevant industry sites, digital PR around original data, and outreach to journalists who cover your space. Publishing more articles will not close that gap.

If your DA is within 10 points of the top results, the bottleneck is content quality and relevance. Google ranks the best answer, not the highest-authority domain, when the difference is small. Invest in deeper research, better structure, and more specific claims than the current ranking pages offer.

A sudden drop of 5 points or more warrants a look at your backlink profile. Spammy links pointing at your domain can drag your score down even if you never built them, and a disavow file in Google Search Console plus a cleanup request to industry research can help. But first verify whether the drop came from an index update by checking your referring domains count in the same tool.

How GrowGanic Treats Authority Signals

We treat domain authority as one input among many, never as a target to optimize. Our pipeline tracks authority signals on your competitors and surfaces the gap, but the system is built around producing content that earns rankings through evidence density and answer quality. Authority compounds when you publish pages that actually get cited and linked.

The limitation is honest: backlinks are not built for you. We track authority and surface the gaps, but link building is outbound work. What we automate is the content engine that makes your domain worth linking to in the first place.

Free gets you an article. Pro publishes thirty a month. Business publishes a hundred and fifty. Current pricing: growganic.io/pricing. Stop refreshing your DA score. Start publishing content that earns links on its own.

Frequently Asked Questions

What are the top 10 domains?

The top 10 domains by authority are consistently the web's most linked-to properties: Google, YouTube, Wikipedia, Facebook, Twitter, Amazon, Adobe, WordPress.org, Apple, and Microsoft. These domains have tens of millions of referring links from nearly every site on the internet, which is why their DA scores sit in the high 90s. No new site will ever approach those numbers, and it does not need to. The relevant comparison is always the domains ranking on your own target keywords.

What is a Domain Authority?

Domain Authority is Industry research's proprietary score, on a logarithmic scale from 1 to 100, predicting how likely a domain is to rank. It is calculated from the quantity and quality of inbound links, weighted by the authority of the linking domains. It is a comparative metric designed to measure your link profile against every other domain in industry research's index, not a Google ranking factor.

How do I find out my Domain Authority?

Run your domain through Industry research. The score updates as industry research recrawls the web, so you should check monthly, not daily. For a second opinion, compare against Ahrefs' Domain Rating, which uses a different link database and will produce a different number. Track both over time and watch the trend, not the single snapshot.