What Is Domain Authority, and How Does It Impact SEO?

When it comes to the SEO of a website, understanding the concept of Domain Authority (DA) is important. It is a metric developed by Moz that is used as a comparative indicator to estimate how likely a website is to rank in search engine results relative to other websites.

It is essential to note that search engines like Google do not consider DA a ranking factor. But still, many SEO gurus globally think that DA can positively impact the SEO performance of a website in several ways.

In this blog, we are going to explain what exactly DA is and how it relates to SEO. Let’s delve into it.

What Is Domain Authority?

As mentioned earlier, Domain Authority is a third-party SEO metric developed by Moz. It is used to determine the ranking potential of a website in search engine results pages (SERPs). It is measured on a scale ranging from 1 to 100. The higher the DA score of a website, the stronger the chances of it dominating rankings as well as its competitors. 

SEO experts widely use DA to analyze link strength and competitors in a relative context so they can make smarter decisions about their SEO strategy.

How Is Domain Authority Calculated?

The following factors are considered when calculating the DA score.

• Backlink Profile: The quality and quantity of inbound links pointing toward your site influence its domain authority. Backlinks from authoritative and relevant websites tend to contribute more positively, resulting in a higher DA score. 

• Referring Domains: It is the number of unique domains linking to your site. If you get 10 links from different sites, it provides far more value than getting 10 links from a single site.

• Link Profile Strength: DA score is also calculated on the basis of the overall strength of a website's backlink profile, including the quality, relevance, and trustworthiness of linking domains.

• Authority of linked Domains: Links from stronger and more authoritative websites within Moz's index carry significantly more weight than links from low-authority sites.

What Is a Good Domain Authority Score?

There is no fixed "good" DA score. It is a relative metric and heavily depends on your targeted niche. A DA of 30 can be stronger in one niche and weaker in another. To give you a better idea, we have analyzed the DA score of over 100 websites in 6 different niches using our free domain authority checker.

In the “SEO” niche, we searched for the keyword “what is SEO” and checked the DA of top-ranking sites to observe their authority levels. Here is what we found:

Here, the DA score varies from 83 to 95. This clearly shows that the average DA scores are very high for the websites appearing in the top results. 

Similarly, in the health niche, we searched for the keyword “healthy foods for liver patients”. Below are the DA scores of the top 11 domains:

The DA scores of the top-ranking sites in this niche are relatively lower compared to the previous example. A site with as low as 24 DA is ranking on the first page here, which shows that low websites can still appear in top results. 

The DA of most of the sites is around 50 to 60+. Based on our research, here is the average Moz Domain Authority of ranking sites in other niches.

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Note that this is not the absolute data, but it's enough to get an idea of average DA scores in several niches.

How Domain Authority Impacts SEO Performance?

Although domain authority doesn’t directly impact your site’s ranking in Google. However, it is often used as an indirect metric to evaluate the SEO performance of your sites, including:

• Higher Search Rankings
• Faster Page Indexing
• More Natural Backlinks
• Better Stability During Algorithm Updates

Now we will discuss them one by one in detail.

1) Higher Search Rankings

Websites with higher domain authority tend to rank better than competitors. Let's say two websites write about the same topic. They used the same keyword, and the content quality and coverage are also similar. Which one will rank higher? 

Most probably, the one with the stronger domain authority. Google has seen that site before. It has links from other trusted sites. So Google ranks it up. 

2) Faster Page Indexing

Search engines tend to crawl websites with higher authority and stronger backlink profiles more frequently. When you publish content on such sites, it is more likely to get discovered and indexed faster. 

However, indexing speed is influenced by many factors such as site structure, internal linking, crawl budget, and server performance, not Domain Authority itself.

3) More Natural Backlinks

When your website gains more visibility in search results, your content can reach more users. So it becomes more likely to be read, referenced, and linked organically.

Those organic backlinks can also contribute to an increase in domain authority, since DA is calculated based on backlink profiles. This can correlate with improved search visibility over time.

4) Better Stability During Algorithm Updates

Google updates its algorithm multiple times a year, which can affect the rankings of websites based on changes in the ranking signals and evaluation methods. Usually, the major signals that Google considers during algorithm updates include:

• Good content quality
• Diverse backlink profile
• Simple and error-free site structure 

Websites fulfilling these tend to show more stable rankings during updates. This is because they have a broader range of backlinks, quality content, and stronger overall trust signals.

Final Words

Domain Authority is a useful metric for SEO professionals to estimate the relative strength of a website in search engine results. A higher domain authority generally indicates that a website is considered an authoritative and credible source in the targeted niche. 

However, it does not reflect overall SEO performance or all off-page SEO factors. That’s why, when evaluating websites, domain authority should always be used as a supporting reference.

Frequently Asked Questions

1. How to check domain authority?

Go to the domain authority checker, paste the URL of your site, and click the “Check Domain Authority” button. The tool will instantly check DA, PA, Spam Score, and Domain Age within seconds.

2. How long does it take to increase DA?

There is no fixed timeline. For a new website, moving from DA 1 to DA 20 can take 3 to 6 months with consistent link building. Going from DA 30 to DA 50 can take a year or more. It all depends on your content strategy and how fast you earn quality backlinks from strong, relevant, and unique domains.

3. What is the difference between "DA" and "DR"?

DA (Domain Authority) is a metric by Moz. DR (Domain Rating) is a metric by Ahrefs. Both measure your site's potential strength in SERPs, but they are calculated with different algorithms and data sources.

4. Can a website with a low DA rank be on Google?

Yes, absolutely. A low DA site can also rank higher on Google if its content is more helpful, valuable, and fulfills E-E-A-T criteria (Experience, Expertise, Authoritativeness, and Trustworthiness).