Enter a domain name to scan for common subdomains. The tool checks a predefined list of subdomains (such as www, mail, ftp, blog, shop, api, dev, staging, m, ns1, and ns2) to see if they resolve.
For example, if you enter example.com, the tool might output:
To help prevent abuse, you must answer a simple math challenge before submitting. Each page load or reset generates a new challenge.