UNIX command for Getting IP addresss of different hosts in WLAN

Is thre any command by which i can get the IP addresses of different machines present in a Wireless Local Network Area.

I am not sue about Wireless LANs but if they are part of the same LAN then their IPs should be cached in the arp table on your machine.

arp -a

Thank u ,k...how abt netstat??will it b usefull??