Please adjust the options to feet your needs.
# nmap -sP 10.203.7.0/24
Update: See Host discovery
If you know the host name, just use 'ping' utility
again you said 'addresses' it means do you want to check the ip address of all the systems connected to your local LAN.?
-- In accordance with the prarabdha of each, the One whose function it is to ordain makes each to act. What will not happen will never happen, whatever effort one may put forth. And what will happen will not fail to happen, however much one may seek to prevent it. This is certain. The part of wisdom therefore is to stay quiet.
Thanks for the input,
Yes .For all the systems
If you know where to look, the following will produce your IP address from the command prompt:
It will list the IP address of every connected interface on your system, and the MAC address (physical address) for every interface and tunnel (whether or not a connection is established). For established TCP/IP connections it should also display each gateway IP, the DNS server addresses, etc.