A list of subdomains for some of the most popular sites on the internet. Made as a result of [this tweet] (https://twitter.com/soaj1664ashar/status/777182478075326464). "Sometimes simple things are ignored".
There are plenty of reasons why people sometimes want a list of subdomains for a website. Whether you're just curious what type of stuff the company are working on or you want to check for security vulnerabilities, a list of subdomains can really come in handy. Not so long back someone figured out that he could get in to anybody's Facebook account due to a vulnerability that was only there on their very old subdomains.
The idea behind this is to let everyone contribute and get a fairly big list of subdomains of all the most popular sites on the internet.
Before opening a pull request, please make sure that:
- Each domain has its own .txt file, eg. Facebook.com.txt, Facebook.co.uk.txt
- There are no duplicates in the list
- The list is in alphabetical order, you could use this site to do that
- http:// or https:// is not in any of the subdomains (as well as no trailing slashes at the end of the domain)
If you're not sure how you can help out, this site can find subdomains for you but it also includes the IP addresses which we don't really want. What I do is open open the list in Notepad which has subdomains like:
Facebook.com 127.0.0.1
m.Facebook.com 127.0.0.2
Next, to get rid of everything other than just the subdomain do a regex find and replace. Find "[ \t].*" and replace it with "\1"