IP Address Allocation for Private Networks

Version 1

    This post shows the list of recommended IP address for private networks. This post is basic and meant for beginners.

     

     

    IP address spaces  for private networks defined in RFC 1918 and include the following address blocks:

     

    • 10.0.0.0/8

    The 10.0.0.0/8 private network is a class A network ID that allows the following range of valid IP addresses: 10.0.0.1 to 10.255.255.254.

    The 10.0.0.0/8 private network has 24 host bits that can be used for any sub-netting scheme within the private organization.

     

    • 172.16.0.0/12

    The 172.16.0.0/12 private network can be interpreted either as a block of 16 class B network IDs or as a 20-bit assignable address space (20 host bits) that can be used for any sub-netting scheme within the private organization.

    The 172.16.0.0/12 private network allows the following range of valid IP addresses: 172.16.0.1 to 172.31.255.254.

     

    • 192.168.0.0/16

    The 192.168.0.0/16 private network can be interpreted either as a block of 256 class C network IDs or as a 16-bit assignable address space (16 host bits) that can be used for any sub-netting scheme within the private organization.

    The 192.168.0.0/16 private network allows the following range of valid IP addresses: 192.168.0.1 to 192.168.255.254.