Very effective way to find out the MAC and IP addresses on your subnet when devices have firewalls blocking icmp or pings is to run an arp scan.
In this video i used Colasoft's MAC SCANNER you can find this at https://www.colasoft.com/mac_scanner/
In this video i used Colasoft's MAC SCANNER you can find this at https://www.colasoft.com/mac_scanner/