A Powerful Subdomain Takeover Tool
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.gitignore Add requirements.txt, change README , add .gitignore Feb 10, 2018
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providers.json Update providers.json Jul 13, 2018
subover.go Fixed a simple but bad bug thanks to proabiral Aug 2, 2018
subover.png Added New Screenshot Mar 16, 2018



Note - This project is discontinued. No more updates will be provided! Sorry!

But something more awesome will come soon!

Subover is a Hostile Subdomain Takeover tool originally written in python but rewritten from scratch in Golang. Since it's redesign, it has been aimed with speed and efficiency in mind. Till date, SubOver detects 30+ services which is much more than any other tool out there. The tool uses Golang concurrency and hence is very fast. It can easily detect and report potential subdomain takeovers that exist. The list of potentially hijackable services is very comprehensive and it is what makes this tool so powerful.


You need to have Golang installed on your machine. There are no additional requirements for this tool.

go get github.com/Ice3man543/SubOver

NOTE - Do not change the location of providers.json file. Or the tool will not work.


./SubOver -l subdomains.txt

  • -l List of Subdomains
  • -a Check all hosts regardless of CNAME (Time Consuming and prone to fp's)
  • -t Number of concurrent threads. (Default 10)
  • -v Show verbose output (Default False)
  • -https Force HTTPS Connection (Default HTTP)
  • -timeout Set custom timeout (Default 10)
  • -h Show help message

Currently Checked Services

Github, Heroku, Unbounce, Tumblr, Shopify, Instapage, Desk, Tictail, Campaignmonitor, Cargocollective, Statuspage, Amazonaws, Cloudfront, Bitbucket, Smartling, Acquia, Fastly, Pantheon, Zendesk, Uservoice, Ghost, Freshdesk, Pingdom, Tilda, Wordpress, Teamwork, Helpjuice, Helpscout, Cargo, Feedpress, Surge, Surveygizmo, Mashery, Intercom, Webflow, Kajabi, Thinkific, Tave, Wishpond, Aftership, Aha, Brightcove, Bigcartel, Activecompaign, Compaignmonitor, Acquia, Proposify, Simplebooklet, Getresponse, Vend, Jetbrains, Azure

Count : 51




Q: What should my wordlist look like?

A: Your wordlist should include a list of subdomains you're checking and should look something like:


Your tool sucks!

Yes, you're probably correct. Feel free to:

  • Not use it.
  • Show me how to do it better.


  • Add more services :-)
  • Improve the tool (There are many things that can be done :-) )


Want to contribute? Great!

You can add more services or recommend any changes to the existing ones. Any kind of help is appreciated.

Or buy me a coffee \o/

Buy me a coffee ko-fi


BSD 2-Clause "Simplified" License


Meet me on Twitter: Twitter


[1.2] 2018-05-19

  • Refactored whole code making it cleaner
  • Added better error handling and more verbose stuff
  • Implemented checking all domains
  • Fixed other stuff, etc...

[1.1.1] - 2018-03-20

  • Providers corrected using EdOverflow's Awesome List
  • Added Information regarding various takeovers to the tool

[1.1.0] - 2018-03-16

  • Rewritten from scratch in Golang
  • This time it's damn fast because of Go Concurrency.
  • The console output looks better :-)

[1.0.0] - 2018-02-04

  • Initial Release with 35 Services written in Python.
  • Pretty Slow :-)