From Xojo Documentation

Read-Only Property (As String )
StringValue = aUDPSocket.BroadcastAddress

Supported for all project types and targets.

The machine's broadcast address.


You can specify this address when you call the Write method and the data will be broadcast across the network, but you will not receive the data you sent back.


This example uses the BroadcastAddress to get the address of the group.

EasyUDPSocket1.Write(EasyUDPSocket1.BroadcastAddress, "Hello World")