regdbdump man page
regdbdump — parse and print out regulatory rules file
regdbdump can be used to parse the regulatory.bin file, the Linux wireless regulatory database used by crda, and print out its contents in human readable format. regdbdump will return non zero if the digital signature regdbdump was built with cannot verify the signature of the regulatory database. Should this happen unintentionally chances are your regulatory.bin file is corrupted or has been tampered with.
regulatory.bin(5) crda(8) iw(8)