Free Subdomain Finder: Find all Subdomains of a Website (2024)

Free SEO tools / Subdomain Finder

Find all subdomains in one click for free and get comprehensive data on their traffic and keywords

Get accurate data on traffic and keywords of any subdomain

Free Subdomain Finder: Find all Subdomains of a Website (1)

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What you will see in the report

Total traffic

Total traffic cost

Keywords total

Location

Date

Traffic share

The tool shows the percentage of traffic a subdomain brings to the analyzed website. This metric demonstrates the traffic share for the selected location and period.

Total traffic

The tool shows the subdomain's organic traffic volume. SE Ranking calculates the expected click-through rate, search volume, and current keyword rankings to estimate this value.

Total traffic cost

This metric indicates the estimated cost of organic traffic a subdomain gets by targeting all discovered keywords. The tool displays cost in the equivalent of Google Ads prices.

Keywords total

The total number of keywords a subdomain ranks for in its organic search. Click through to get more data on each keyword: traffic, difficulty, search volume, competition and SERP features.

Location

Analyze subdomain performance across any location. Select any of the 190 countries to access country-level data.

Date

Get comprehensive research reports for the selected month. Access historical data to get detailed information for any past month going back to February 2020.

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Why you need a subdomain finder

Keeping tabs on subdomains is essential for any site optimization. Search engines consider each subdomain a different site, so you need to optimize each separately to boost overall traffic and improve website performance. A subdomain scanner also helps find duplicate content, which can damage rankings of both the main domain and subdomain. It also helps identify poor-quality backlinks to subdomains that can diminish your SEO efforts.

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How our subdomain finder works

Subdomain Finder scans the DNS records and supplementary databases to analyze the domain's hierarchy. Our subdomain scanner checks:

  • DNS records (NS, MX, TXT, AXFR)
  • DNS enumeration
  • SSL certificates
  • HTML links
  • Search engine results
  • Reverse DNS for target IP addresses

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How to use our subdomain scanner

Subdomain Finder is straightforward to use. To start, enter the target domain address and click Scan. The tool will take you to Subdomains section of SE Ranking’s Competitive Research, which reveals comprehensive, up-to-date data on every found subdomain—access data on traffic volume, share, and cost, along with the number of keywords. Filter subdomains by any metrics and access the detailed keywords report by clicking on the number of keywords. Finally, click the Export button to download the report in the .csv or .xsl format.

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How reliable is our subdomain checker

Subdomain scanner ensures the highest accuracy of results. It aggregates relevant information from search engines and supplementary databases and sends additional requests to domain service providers to get the most complete and up-to-date results. The scanner is secure; we don’t save or publish any information about checked domains and their subdomains.

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Why 1,000,000+ users joined SE Ranking

Large databases

Analyze data on over 3 billion keywords across 68 countries, plus we are constantly expanding our list of available databases.

Add your keywords

If you work in a narrow niche and we do not have data on your search queries, just upload them manually and the service will collect all the relevant information.

Export any reports

SE Ranking doesn’t have a limit on exporting data. You can export every available report for further analysis.

Flexible pricing

You determine the price yourself by choosing the number of keywords to track and how often you want to check their ranking positions. You can pay only for the tools you actually use.

Get help at any stage

After signing up to the service, you will be contacted by a manager who will help you figure out how to work the platform and how it can benefit your project.

Lots of educational material

We offer a YouTube channel, a blog, webinars, as well as a Help Center with plenty of how-to articles and videos. We are always busy creating new formats to make it easier and quicker for you to learn SEO.

Convenient mobile ap

You can easily control your SEO strategy right from your phone. And if something doesn’t go according to plan, you will get notified.

Ability to shape the platform according to your needs

See something that doesn’t make sense, isn’t working or is missing from the platform? Just reach out to us and we’ll see what we can do.

API

Use the API to manage large or complex accounts more effectively. Automatically create, customize or delete projects.

Free Subdomain Finder: Find all Subdomains of a Website (2024)

FAQs

Is there a way to find all subdomains? ›

The Deep scan uses multiple techniques to find subdomains fast and effectively:
  1. DNS records (NS, MX, TXT, AXFR)
  2. Enumeration using built-in wordlists, plus the option to use your own.
  3. External APIs search.
  4. Public search engine queries (Google search, Bing)
  5. Word mutation techniques.
  6. Searching in SSL certificates.

What is the best tool to find subdomains? ›

Here are ten highly effective options.
  • Google Dorking. Google Dorking is a passive subdomain enumeration technique using Google's advanced search operators, like "site:" to find information about a target, including subdomains. ...
  • Sublist3r. ...
  • Amass. ...
  • Recon-ng. ...
  • SubDomainizer. ...
  • Pentest Tools Subdomain Finder. ...
  • crt.sh. ...
  • Shodan.
May 13, 2024

What is the Google command to find the subdomains of a website? ›

Using Google's "site:" filter, we can see some of the subdomains Google has discovered for a site. We can then add the "-inurl:" filter to exclude the subdomains we've already found, allowing us to see more.

What search phrase can be used to find subdomains of a website? ›

There are some subdomains that are defined for virtually every domain name, such as www, and others that are very common, like shop or mail. But by going through and trying a DNS query using `dig`, `nslookup`, or `host` for as many possible subdomains, you might find some hidden ones.

Do subdomains show up on Google search? ›

Google should be able to crawl and index your subdomains based on the URLs included in the primary domain's sitemap. However, it is recommended that you monitor the indexing status of your subdomains in Google Search Console to ensure that they are being indexed properly.

What is a subfinder? ›

subfinder is a subdomain enumeration tool written in the Go programming language. Subfinder is used for discovering passive subdomains of websites by using digital sources like Censys, Chaos, Recon. dev, Shodan, Spyse, Virustotal, and many other passive online sources.

What is all in one subdomain enumeration tool? ›

SubDomz is an automation tool for finding the subdomains of the given target or targets passively. It uses multiple tools and various online search engines and services in parallel to find subdomains effectively and sort and save them in an organized way.

Why subdomains are bad for SEO? ›

One disadvantage of using subdomains for SEO is that they are treated as separate entities by search engines, which can dilute the overall authority of your main site. Additionally, managing content on subdomains can be more complex than on a subdirectory, as it requires separate hosting and maintenance.

How does subdomain finder work? ›

Subdomain Finder scans the DNS records and supplementary databases to analyze the domain's hierarchy. Our subdomain scanner checks: DNS records (NS, MX, TXT, AXFR) DNS enumeration.

How do I find all the subsites of a website? ›

You can usually locate it in the root or footer section of the website. For example, the XML sitemap URL could be “www.example.com/sitemap.xml“. Once you click on the sitemap, you will find all pages & subpages of a website. You can use different sitemap generation tools if you don't have an existing sitemap.

How do I find subdomains of a domain using nslookup? ›

Find Subdomains of a Domain with NsLookup:

Replace “example.com” with the domain name you are interested in. This command will return a list of the authoritative name servers for the domain, which can often include the subdomains.

Do subdomains get indexed by Google? ›

The short answer is yes, Google can and will index and rank subdomains unless you explicitly take steps to ensure they're excluded from its index. Google's entire business model is based on discovering content. The same goes for all search engines.

What is the command to find subdomains? ›

How to Find the Subdomains of a Domain
  • WhoisXML Subdomain Lookup – Best for Developers.
  • Criminal IP – Best for Domain Scoring.
  • DNSDumpster – Best for Visualizing Subdomains.
  • NMMapper – Best for Simple Online Lookups.
  • Sublist3r – Best for Python Users.
  • Netcraft – Best for Historical Subdomain Data.
May 30, 2024

How to find the subdomain of a website online? ›

By search engines

Search engines like Google supports various advanced search operators to refine search queries. These operators are often referred to as Google Dorks. We can use site: operator in Google search to find all the Subdomains that Google has found for a Domain. Lets take an example on “site:vulnweb.com”.

What is Google dorks for subdomain enumeration? ›

One of the benefits of Google Dorking is that it can be used for subdomain enumeration. This is done by searching for the "site:" operator in Google, followed by the target domain. For example, searching for "site:example.com" will return a list of all websites that are hosted on the example.com domain.

How to list all DNS records in nslookup? ›

Using nslookup online is very simple. Enter a domain name in the search bar above and hit 'enter'. This will take you to an overview of DNS records for the domain name you specified.

How many subdomains is too many? ›

Each domain name can have up to 500 subdomains. You can also add multiple levels of subdomains, such as info.blog.yoursite.com. A subdomain can be up to 255 characters long, but if you have multiple levels in your subdomain, each level can only be 63 characters long.

How do I find dangling subdomains? ›

To identify DNS entries within your organization that might be dangling, use Microsoft's GitHub-hosted PowerShell tools "Get-DanglingDnsRecords". This tool helps Azure customers list all domains with a CNAME associated to an existing Azure resource that was created on their subscriptions or tenants.

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