Find All Subdomains (2024)

FAQs

How many subdomains is too many? ›

A domain can have up to 500 subdomains. You can create multiple levels of subdomains such as store.product.yoursite.com, test.forum.yoursite.com, etc. Each subdomain can be up to 255 characters long, but for multi level subdomains, each level can only be 63 characters long.

Should You Use a Subdomain or a Subdirectory? From an SEO perspective, it's OK to use either option. They're equally good for SEO, according to Google. But there are other reasons to choose a subdomain over a subdirectory.

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.

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.

The most common subdomain is “www” or “world wide web.” The subdirectory points users to the main directory of a website—in other words, where your homepage and other core pages live. Other subdomains work to create distinct parts of a site. For example, Google's root domain is www.google.com.

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.

Google's search operators make it easy to narrow down the search to find more subdomains. We can use the "site" operator in the search bar to find all the subdomains that Google has indexed for a domain. Google also supports the minus operator to exclude any subdomains we are not interested in.

Let's say you are making a pitch to a client to create their new website. You can create a subdomain that is specifically intended for them to give an idea of what their new website might look like. This is hosted on your own main domain, while retaining ownership of the subdomain.

Are subdomains bad for SEO? Subdomains aren't directly bad for SEO, but they're not always the most strategic choice. Google states that subdomains and subdirectories are both fine, but subdomains are crawled and tracked separately.

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 better, a subdomain or a subdirectory? ›

According to Google, subdomains and subdirectories are seen as equal when it comes to indexing and ranking. That said, real-world case studies show that subdirectories tend to rank faster and more effectively than subdomains on the first page of the search engine results page (SERPs).

A sitemap is a file of your site's pages, links and other information that helps Google read and index your site. Each subdomain has its own dedicated sitemap that needs to be submitted to Google individually. Tip: You can check your subdomain's sitemap in the address bar by adding /sitemap.

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”.

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.

While Nmap is primarily used for network mapping, it can also be used for subdomain hunting. Nmap uses various techniques, such as port scanning, to identify active subdomains and gather information about them.

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.