When Google measures the trust of a domain from its backlinks, the search engine actually weighs having a high number of referring domains as a ranking signal. This means that a website with fifty backlinks coming from fifty different domains could be seen as more trustworthy than a website with five hundred backlinks coming from only five domains.
So, if you want to increase your SEO with link building, then you will want to gather new links from as many referring domains and IPs as possible. Otherwise, gaining additional links from a website that already links to you will not impact your SEO as much as a new link from a new website.
With these two reports, you’ll be able to pinpoint your competitor’s top partnerships that lead to backlinks and find similar opportunities for your website to gain links and boost SEO. Your competitor’s referring domains and IPs will be great reports to discover blogs, media sites, informational portals and geographic areas in your niche that are sending links to websites like yours.
In addition to these reports, you may want to take advantage of the Backlink Gap tool to locate referring domains that send backlinks to multiple websites that you compete with.
The Referring Domains report will give users a list of every domain that’s linking back to the queried domain. At the top of the report will be a New and Lost Referring domains graph:
Below the graph, will be the complete listing of domains Semrush found linking to the queried domain. The domains will be listed in descending order by the number of backlinks they send to the queried domain.
The table can be sorted by the total number of backlinks and Authority Score. Sort by the number of backlinks to find your competitor’s most generous partnership, and sort by Authority Score to find domains that contribute the most valuable links that will make an impact on SEO.
You can also sort this table by First Seen and Last Seen date to look for your competitor’s oldest and most recent backlink partners.
The IP address and country are listed in this table so you can analyze the popularity of your competitor’s website by geographic region. It’s generally agreed that having a more diverse background of links, compared to a high volume coming from the same IP address and region, will send a stronger trust signal to search engines. The Referring IPs report will provide a table to better analyze the IPs and geographic distribution of backlinks.
For each domain, you will be able to see the root domain as well as the category associated with it. This is a great way to see which of the referring domains are most closely associated with your niche.
Referring Domains Advanced Filters
Above the table, you’ll find quick filters:
All/Active/New/Lost - filters the table by all links, only active links, new links (inks that have appeared within the past 30 days), and lost links (links that have been lost within the past 6 months).
Time period - allows you to analyze a specific time period.
Category - analyze backlinks from a certain industry.
Authority score - The AS filter lets you choose from a set of 10 different ranges, as well as create a custom range. Next to each set range, you can see the number of domains associated with each.
Advanced filters in this report give you the option to filter by IP address, Zone (top-level domain), Country, and New & Lost domains.
Zone filters are essentially TLD filters, and a Country filter will find all of the referring domains located in a certain country with their various TLDs. Filtering before exporting your data is an excellent way to hone in on a specific range of backlink prospects.
For example, a zone filter for “.au” could find websites using the .au TLD that are hosted in the United States, while a country filter for “Australia” could find websites in Australia hosted on .com or .org TLDs.
The Referring IPs report will show you every IP address of the backlinks to a website. With this information, you will be able to tell how many backlinks are coming from one IP address, and how many are coming from various countries. Having a widespread distribution of backlinks is healthy for SEO, and by using this report you can analyze which countries your site is getting the most links from and where it is most popular.
The IPs in the table are sorted by a number of domains on each IP (a single IP can host numerous websites if they are all hosted on the same server) and can also be sorted by number of backlinks to the site, or first and last seen date of the IP.
Clicking on a number in the Domains column will take you to a filtered Referring Domains report and clicking on a number in the Backlinks column will take you to a filtered Backlinks report. These reports will provide you with the full listing of referring domains or backlinks that coming from the specified IP address. From there, you can export the list to save your research.
One reason for looking into a domain’s referring IPs is looking for a sign of black-hat SEO tactics. If you see a single IP address sending an extremely high number of backlinks from multiple domains, that could be a sign of a private blog network, link network or other fabricated link schemes.
This report can be exported to Excel or CSV if you want to filter this data on your own.