PRIVATE ADDRESS

1.ACCORDING TO RFC-1918


2.ORGANIZATIONS MAKE USE OF THE PRIVATE INTERNET ADDRESS SPACE FOR HOSTS THAT REQUIRE IP CONNECTVITY 
WITH IN THEIR ENTERPRISE NETWORK BUT DO NOT  REQUIRE EXTERNAL CONNECTIONS TO THE GLOBAL INTERNET


3.CLASS A: 10.0.0.0

4.CLASS B :172.16.0.0,172.31.0.0

5CLASS C :192.168.0.0,192.168.255.0



SOME FULL FORMS-
                  RFC=REQUEST FORM COMMENTS
                  AWG=AMERICAN WIRED GAUGE