Can I take over XYZ? on

Can I take over XYZ?

A list of services and how to claim (sub)domains with dangling DNS records.

Subdomain takeover vulnerabilities occur when a subdomain ( is pointing to a service (e.g. GitHub pages, Heroku, etc.) that has been removed or deleted. This allows an attacker to set up a page on the service that was being used and point their page to that subdomain. For example, if was pointing to a GitHub page and the user decided to delete their GitHub page, an attacker can now create a GitHub page, add a CNAME file containing, and claim