Probable_Subdomains - Subdomains Analysis And Generation Tool. Reveal The Hidden!

Probable_Subdomains – Subdomains Analysis And Generation Tool. Reveal The Hidden!

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During bug bounties, penetrations tests, red teams exercises, and other great activities, there is always a room when you need to launch amass, subfinder, sublister, or any other tool to find subdomains you can use to break through – like, or Within this repository, you will be able to find out the answers to the following questions:

  1. What are the most popular subdomains?
  2. What are the most common words in multilevel subdomains on different levels?
  3. What are the most used words in subdomains?

And, of course, wordlists for all of the questions above!


As sources, I used lists of subdomains from public bugbounty programs, that were collected by, bounty-targets-data or that just had responsible disclosure programs with a total number of 4095 domains! If subdomains appear more than in 5-10 different scopes, they will be put in a certain list. For example, if dev.stg appears both in * and *, it will have a frequency of 2. It does not matter how often dev.stg appears in * That’s all – nothing more, nothing less< /strong>.

You can find complete list of sources here



In these lists you will find most popular subdomains as is.

Name Words count Size
subdomains.txt.gz 21901389 501MB
subdomains_top100.txt 100 706B
subdomains_top1000.txt 1000 7.2KB
subdomains_top10000.txt 10000 70KB

Subdomain levels

In these lists, you will find the most popular words from subdomains split by levels. F.E – dev.stg subdomain will be split into two words dev and stg. dev will have level = 2, stg – level = 1. You can use these wordlists for combinatory attacks for subdomain searches. There are several types of level.txt wordlists that follow the idea of subdomains.

Name Words count Size
level_1.txt.gz 8096054 153MB
level_2.txt.gz 7556074 106MB
level_3.txt.gz 1490999 18MB
level_4.txt.gz 205969 3.2MB
level_5.txt.gz 71716 849KB
level_1_top100.txt 100 633B
level_1_top1000.txt 1000 6.6K
level_2_top100.txt 100 550B
level_2_top1000.txt 1000 5.6KB
level_3_top100.txt 100 531B
level_3_top1000.txt 1000 5.1KB
level_4_top100.txt 100 525B
level_4_top1000.txt 1000 5.0KB
level_5_top100.txt 100 449B
level_5_top1000.txt 1000 5.0KB

Popular splitted subdomains

In these lists, you will find the most popular splitted words from subdomains on all levels. For example – dev.stg subdomain will be splitted in two words dev and stg.

Name Words count Size
words.txt.gz 17229401 278MB
words_top100.txt 100 597B
words_top1000.txt 1000 5.5KB
words_top10000.txt 10000 62KB

Google Drive

You can download all the files from Google Drive



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