Find Subdomains (2024)

1. Free subdomain finder online 🛡️ find subdomains of domain

  • Use the free subdomain scanner to lookup and check all the subdomains of a domain. Check how many sub domains you can find to map your attack surface.

2. Subdomain Finder -

  • Subdomain Finder is a scanner that scans an entire domain to find as many subdomains as possible.

3. Free Subdomain Finder: Find all Subdomains of a Website

  • Free subdomain scanner can help find all website subdomains and get additional information like traffic share or the number of keywords.

4. - dns recon and research, find and lookup dns records

5. Subdomains Lookup | Find all subdomains | WhoisXML API

  • Each subdomain search gives you a list of all the subdomains of a domain from a large database gathered in over a decade of data crawling and growing by over 1 ...

  • Find all the subdomains of a domain with our subdomain finder tools. Access 2.3+ billion subdomains from 10+ years of data crawling. Get started today.

6. Subdomain finder - 9 Enumerating tools hosted online

  • Online Subdomain finder using Sublist3r, DNscan, Nmap,Anubis, Amass. Discover subdomains of target domain with this hosted tools.

  • offers Online network penetration and mapping tool for penetration testers and System administrators.

    See Also
    Great Dane

7. Find DNS Host Records | Subdomain Finder -

  • Data Set Updates: HourlyQueries / day: # based on Plan

  • Online tool to enumerate subdomains of a domain. Find host records for a domain during the discovery phase of a security assessment or penetration test.

8. How to find Subdomains of a Domain in Minutes? - Geekflare

  • 4 dec 2023 · NMMAPPER. An online tool to find subdomains using Anubis, Amass, DNScan, Sublist3r, Lepus, Censys, etc. nmmapper. I tried NMMAPPER for one of ...

  • Having an unsecured subdomain can lead to a serious risk to your business. Here are some tools to find any website's subdomains.

9. 8 Subdomain Enumeration —How to find Subdomains of any Domain

  • 3 jun 2022 · Subfinder is a Subdomain discovery tool that discovers valid Subdomains for websites by using passive online sources. It has a simple modular ...

  • Hello, I have come today with a very useful topic of recon. In this blog we will see how to find Subdomain of any target. So, lets start.

10. Top 10 Subdomain Finders for Great Website Reconnaissance - LinkedIn

  • 11 mrt 2023 · Subfinder is an open source tool for discovering subdomains.It can find subdomains using various search engines including Google, Yahoo, Bing, ...

  • Subdomain enumeration is the process of finding #subdomains of a particular domain. Subdomain Finder is a useful tool to help discover website subdomains.

11. Subdomain discovery -

  • Fast and free online subdomain discovery service. This service finds a large number of subdomains for a target web site. To search for site subdomains used ...

  • This service finds a large number of subdomains for a target web site.

Find Subdomains (2024)


Is there a way to find all subdomains? ›

There are several ways to find subdomains:
  1. Manually, by using the site:* operator in Google.
  2. By checking DNS records using the nslookup command.
  3. By using our online subdomain scanner or similar tools.

How do I query DNS for all subdomains? ›

Using a terminal and the command nslookup is the most effective way to search a domain's DNS records. On almost all operating systems, this command works perfectly and displays all DNS records for the domain. To show how to use the command, here's a sample nslookup command for each record type.

What tool to use to find subdomains? ›

Top 10 Subdomain Finders for Great Website Reconnaissance
  • Sublist3r. Sublist3r is a python-based tool for listing subdomains of a website. ...
  • Amass. Amass is a command line tool that can find subdomains by crawling web pages, search engines, and passive DNS sources. ...
  • Subfinder. ...
  • Knockpy. ...
  • Subbrute. ...
  • Aquatone. ...
  • Recon-ng. ...
  • Subdomainizer.
Mar 11, 2023

Is subdomain enumeration legal? ›

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.

How to find all subdomains of a domain for free? ›

Some popular online tools include:
  1. Sublist3r: A powerful subdomain enumeration tool that uses various search engines, and it can also enumerate subdomains using brute-forcing techniques.
  2. DNSDumpster: A free online tool that allows you to find subdomains of a domain using DNS data.
Mar 3, 2024

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 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.

Do subdomains have separate DNS records? ›

Each name has its own DNS records – really, the whole point of subdomains is that each of them can have different records (and point to different IP addresses) than the main domain. Because of that, each name is cached independently.

Do subdomains have DNS records? ›

A subdomain is a type of DNS record that adds a prefix to your domain, such as You can create a subdomain that uses an IP address by adding an A record to your DNS zone file.

Do I need an A record for all subdomains? ›

For subdomains, in most cases using a CNAME record instead of an A record will simplify management of your domain. If your IP address changes you will need to update every A record with the new IP address, but by using CNAME records you will only need to update the single core A record.

What is 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 are common URL subdomains? ›

These tend to be:
  • blog. [domain].com.
  • news. [domain].com.
  • landing. [domain].com.
  • articles. [domain].com.
  • resources. [domain].com.
  • insights. [domain].com.

Does Google penalize subdomains? ›

Google will not penalize international websites that exist on separate subdomains if they have duplicate content. Instead, it will recognise the pages are identical and in most cases index both, but will only pick one URL to show in search results.

What is subdomain hijacking? ›

Subdomain hijacking, also known as dangling DNS, occurs when a threat actor gains control of a subdomain of a legitimate domain.

Is DNS brute force illegal? ›

Brute force attacks are only legal when authorized security professionals carry them out as part of legitimate penetration testing to evaluate the security of a system. If authorized and performed in a controlled environment, they are also legal for educational and research purposes.

Do subdomains have their own DNS records? ›

Each name has its own DNS records – really, the whole point of subdomains is that each of them can have different records (and point to different IP addresses) than the main domain. Because of that, each name is cached independently.

Does Google show subdomains? ›

If Google does not come across links to your subdomain when it's crawling your site or another site, then it won't be able to find your subdomain and thus won't index it. The only exceptions to this would be if: You submit the XML sitemap for your subdomain to Google via Google Search Console.

Are subdomains public? ›

If you use public TLS certificates on your subdomains, they can be easily found through certificate transparency logs.

Do subdomains have their own DNS? ›

Subdomains can point to the same DNS server as the associated domain name, or to their own DNS zone. To speed up the loading time for certain webpages or subdomains, some webmasters create a DNS subdomain delegation. This assigns a server to each subdomain.

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