cnamex is a tool to check if subdomains have CNAME records or not.
To install cnamex, run the following command:
go install github.com/hackruler/cnamex@latestYou can pipe the input and it will store the subdomains to different files which has any CNAME and not any CNAME.
cat subdomains.txt | cnamex cnamex -f <input file>