Subdomain Finder (2024)

FAQs

Is there a way to find all subdomains? ›

As long as you use them correctly, subdomains are fine for your SEO performance.

This type of subdomain enumeration is resource-intensive and may have legal and ethical implications since sending large requests to a target domain is required. Because of its intrusive nature, active subdomain enumeration may trigger security alerts.

It's a cyber threat executed when an attacker gains control of a legitimate subdomain that's no longer in use, then cleverly exploits the forgotten or misconfigured dangling DNS to host their own content on the previously used zone.

Characteristics and Parameters of a Subdomain

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.

Subdomains allow webmasters to organize their content, so they can maintain an ecommerce store on one domain, for example, and a blog on another. However, Google treats subdomains as separate sites.

Google Considers Subdomains as Separate Standalone Sites

Google has always treated subdomains as different sites, separate from the main domain. This is evident within Google Search Console, where subdomains have to be verified separately from the content that exists under the main domain website.

Why this is important: Choosing between subdomains and subdirectories impacts how search engines index and rank website content. Subdirectories are generally favored for consolidating authority and improving SEO performance, which is vital for online business growth.

Yes. When you purchase the root domain, you can set up any subdomain you want on that root domain. Before you use Google Search Console (used to be Google Webmaster Tool), you should set up your site so that all traffic going to the root domain gets redirected to the www version.

Do subdomains need their own DNS record? ›

Within the same domain, you can create one or more subdomains. This allows you to organise the structure of your website, or group different websites on the same server. By default, the domain and its subdomains are part of the same DNS zone, i.e. they are hosted on the same web server.

So, securing every subdomain is imperative. But the good news is, you don't have to buy separate SSL certificates for all your registered subdomains. A single wildcard certificate can secure your primary domain and all your first-level subdomains.

Subdomain stripping is the process of removing the subdomains from the main domain and delivering the emails to the main domain directly.

to secure a subdomain you need to either generate a new certificate for each subdomain or use a wildcard SSL certificate. A wildcard SSL certificate will automatically secure the main domain and all subdomains. A wildcard SSL certificate can be generated by using the Let's Encrypt DNS verification method.

A subdomain lookup tool, also known as a subdomain finder tool, helps identify subdomains associated with a domain name using passive DNS data.

If you have a website with a subdomain, and the subdomain has content that Googlebot can read, Google should index that content. Content which is showing on google search results is content from pages that are already indexed by Google bots.

PSA: Remember that subdomains are not a secret and should not be used to hide or secure services.

Yes, a quick way is to type "site:YOURDOMAIN.com filetype:xml" in the Google search bar, replacing "YOURDOMAIN.com" with the website's domain. The search results may yield a list of indexed XML files linked to the website, including the sitemaps.