When I type "ipconfig" within my command line, I get this thing:

   IPv4 Address. . . . . . . . . . . :
   Subnet Mask . . . . . . . . . . . :
   Default Gateway . . . . . . . . . :

Why tha hack my subnet mask is and my IP CLASS is A? Because this thing, I have 2^16 of network prefix and 2^8 hosts can be - which is wnormous number I will never use! How can I make my IP to be class C (to be able to host only 2^8 hosts, and then subnneting this IP to be \29 so I my network will be able to hold just 5 computers trying to connect.?)?

closed as off-topic by Ron Maupin Feb 24 '17 at 16:18

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  • 2
    classful addressing is dead for 24 years, forget about it and learn CIDR. Note that home networking is off topic here. – JFL Feb 24 '17 at 10:08

You are using a mask, it means that the range of addresses is from

In 1993, the Internet Engineering Task Force published RFC 1518 and RFC 1519. These RFCs define a new concept called Classless Inter Domain Routing. The most important thing of those RFCs is that obsoletes the Classful Network where ranges where associated with classes with fixed netmasks.


Your ip is in the 10 range because it belongs to the group of private IP, which are, and Since this ranges are not routed onto to the public network you can do whatever you want with this ips on your home or office network.

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