Valid IP address

[Airmack]

Iv listed some IP's under this text and then put a N for NO and a Y for YES if the IP's are valid addresses. For example, could I give these IP's to a printer, server, router, workstation

150.100.255.255 N
175.100.255.18 Y
195.234.253.0 N
10.0.0.23 N
188.248.221.176 Y
127.34.25.189 Y
224.156.217.73 Y

Could you folks tell me if im correct in this set up I have?

[glc]

Anything with a .255 anywhere in it or with a .0 at the end is not valid. All the rest are, but not necessarily "legal" private IP's. The only "legal" private IP in your list is 10.0.0.23.

[Airmack]

thanks. our my hero.

now answer me this.. why cant any network device have a ip that ends in a 255 or 0? doe sit have some thing to do with subnets?

[Mesaeus]

anything ending in .255 is a broadcast address, anything ending in .0 is network number (or net ID). Both are automatically in use (reserved) and can't be used as host ip.

Private ranges are :
10.0.0.0-10.255.255.255
172.16.0.0-172.31.255.255
192.168.0.0-192.168.255.255

There also something called APIPA, short for "Automatic Private IP Addressing". This ranges from 169.254.0.1 through 169.254.255.254 and is assigned in Windows when a host asks a DHPC server for a dynamic address and the DHPC server does not respond.

I hope this answers your questions