Scan Network for Clients with DHCP Enabled

I am supposed to provide our IT manager with a list of all the computers on our network that have Static IP addresses. Is there a program that scans the network for this? Even a program that scanned the network for client computers with DHCP Enabled. there’s programs that scan and get the MAC address, so Im sure there’s gotta be a way to do this. Any suggestions would be greatly appreciated. thanks!