What are referring domains? Referring domains are unique websites that link to your website, and they matter because they show how many different sites mention or recommend your pages.
In this guide, you will learn how referring domains differ from backlinks, why they matter for SEO, and how to check and grow them safely.
What Are Referring Domains in SEO?
A referring domain is one unique website that links to your website or web page. Ahrefs defines referring domains as domains that have one or more backlinks to a target website or page. For example, if one website links to your article five times, that counts as one referring domain and five backlinks.
This is why referring domains SEO is different from only counting website backlinks. One linking domain can create many inbound links, but it is still one unique source.
For example, if exampleblog.com links to Scale Xpert from five different articles, you have five backlinks from one referring domain. However, if five different blogs each link once, you have five backlinks from five referring domains.
Referring Domains vs Backlinks
Referring domains vs backlinks is one of the most important beginner SEO differences. Backlinks count total links, while referring domains count unique websites.
| Metric | Meaning | Example |
|---|---|---|
| Backlinks | Total links pointing to your site | 20 links from one website |
| Referring domains | Unique websites linking to your site | 1 website linking to you |
| Link quality | Relevance and trust of the link | A niche SEO blog linking to Scale Xpert |
| Backlink profile | All links and domains pointing to your site | Your full external link data |
Because of this, 100 backlinks from one domain are not the same as 100 backlinks from 100 unique domains. In most backlink analysis work, unique domains give a clearer view of link diversity.
Why What Are Referring Domains Matters for SEO
What are referring domains matters because links help search engines discover pages and understand page relevance. Google says it uses links as a signal when determining page relevance and finding new pages to crawl.
In practice, more relevant linking domains can support a stronger backlink profile. However, the goal is not only more domains. The goal is more useful, relevant, and trusted domains.
Backlinko’s study of 11.8 million Google search results found that link authority and backlinks correlate with higher first-page rankings. However, this is correlation, so beginners should use it as a guide, not a guarantee.
Are More Referring Domains Always Better?
More referring domains can be helpful, but quality matters more than quantity. A relevant referring domain from a real niche website is usually better than many low-quality links from unrelated sites.
A good referring domain usually has:
- topical relevance to your website
- real content and real users
- indexable pages
- natural anchor text
- useful link placement
- no obvious spam patterns
- potential referral traffic
In contrast, low-quality referring domains may come from link farms, spam directories, copied websites, or unrelated pages. Therefore, do not chase every backlink opportunity only because it increases your domain count.
How to Check Referring Domains
You can check referring domains with a referring domain checker or backlink checker. Common tools include Google Search Console, Ahrefs, Semrush and Ubersuggest.
For Google Search Console, use this simple process:
- Open Google Search Console.
- Go to Links.
- Review External links.
- Click Top linking sites.
- Check which unique domains link to your website.
- Review the linked pages and anchor text.
Google’s Links report shows external links, top linked pages, and top linking sites, which makes it useful for reviewing who links to your website.
How to Analyze Referring Domains
After finding your referring domains, review their quality. Do not only look at Domain Rating, Authority Score, or domain authority.
Check these points:
- Is the domain relevant to your niche?
- Is the linking page useful?
- Is the link placed inside real content?
- Is the anchor text natural?
- Is the link dofollow or nofollow?
- Does the page have too many unrelated external links?
- Could the link send referral traffic?
- Does the domain look safe and active?
For example, a smaller SEO blog with real readers can be more useful than a high authority site that is unrelated to your topic. In addition, nofollow backlinks can still bring referral traffic and brand visibility.
How to Use Referring Domains for Competitor Analysis
Referring domains are useful when comparing your site with competitors. Instead of asking only, “How many backlinks do they have?”, ask, “Which unique domains link to them?”
Use this workflow:
- Pick one competitor page.
- Check its referring domains.
- Remove spammy or irrelevant domains.
- Find relevant sites that also link to similar content.
- Look for patterns, such as resource pages, guest posts, reviews, or data citations.
- Build better content before outreach.
This process helps you find backlink gap opportunities. For example, if three competitors have links from SEO resource pages, your guide may also be a good fit if it is useful enough.
How to Increase Referring Domains Safely
The best way to increase referring domains is to earn links from different relevant websites. Safe link building focuses on usefulness, not shortcuts.
Good methods include:
- publish original research or statistics
- create useful templates and checklists
- write guest posts for relevant sites
- get listed on real resource pages
- earn local backlinks from partners
- reclaim unlinked brand mentions
- use broken link building
- collaborate with niche bloggers
- promote strong guides in communities
However, avoid spammy backlinks, automated link building, and mass link exchanges. Google’s spam policies warn against link spam and links made to manipulate rankings, so backlink quality should always come before link quantity.
FAQs About Referring Domains
What are referring domains?
Referring domains are unique websites that link to your website or page. One referring domain can send one backlink or many backlinks.
What is the difference between backlinks and referring domains?
Backlinks are total links pointing to your site, while referring domains are the unique websites that send those links. For example, five links from one site count as five backlinks but one referring domain.
Are referring domains important for SEO?
Yes, referring domains can matter because links help Google discover pages and understand relevance. However, link quality and topical relevance matter more than raw domain count.
How many referring domains do I need?
There is no fixed number. Check the top-ranking pages for your target keyword, compare competitor backlinks, and focus on relevant domains rather than a random count.
How do I check referring domains?
Use Google Search Console Links, Ahrefs referring domains, Semrush backlinks, Moz, or another backlink checker. Start with Top linking sites in Google Search Console for a free option.
How do I get more referring domains?
Create link-worthy content, publish original examples, pitch relevant guest posts, build resource page links, reclaim unlinked mentions, and collaborate with niche websites.
Conclusion
What are referring domains? They are the unique websites linking to your site, and they help you understand link diversity better than backlink count alone. A strong referring domains SEO strategy focuses on relevant domains, useful content, and safe link building.
Start by checking Google Search Console links, reviewing top linking sites, and comparing your backlink profile with competitors. Then, build quality links from real websites that can support organic rankings, referral traffic, and long-term trust.
Want help reviewing your referring domains or backlink profile? Join the Scale Xpert community here.
