When using static ip address(also called fixed addressing) on Home & other Private networks, they should be chosen from within the '3 Blocks of numbers' set aside specifically for this purpose. These standard ip address space(range) for private networks is as listed below: [RFC 1918].
1- Class A network: 10.0.0.0 through 10.255.255.255, has a default Subnet mask of 255.0.0.0, and is also
called the "24-bit block".
2- Class B network: 172.16.0.0 through 172.31.255.255, has a default Subnet mask of 255.255.0.0, and is
also called ''the 16-bit block."
3- Class C network: 192.168.0.0 through 192.168.255.255, has a default Subnet mask of 255.255.255.0,
also called the ''20-bit block''.
These ranges support many thousands of different ip addresses.
NB: It is common for people to assume that any address in this ranges can be chosen, and that the specific choice does not matter much. This is not true!
*** To choose and set specific static ip addresses suitable for your network, follow these guidelines:
1- Do not choose any address that end with ''.0'' or ''.255'', these addresses are generally reserved for use by 'Network protocols'. For example, the ip address 192.168.0.0 and 192.168.0.255 are the ''network and broadcast'' address respectively.[they are reserved addresses].
2- Do not choose the addresses at the beginning of a private range. IP addresses like 10.0.0.1 and 192.168.0.1 are commonly used by 'Network Routers' and other consumer devices.
3- Do not choose an address that falls outside the range of your Network mask. For example, to support all addresses in the 10.x.x.x private range, the network mask on all devices must be set to 255.0.0.0...class A, otherwise some static ip addresses in this range will not work.
1- Class A network: 10.0.0.0 through 10.255.255.255, has a default Subnet mask of 255.0.0.0, and is also
called the "24-bit block".
2- Class B network: 172.16.0.0 through 172.31.255.255, has a default Subnet mask of 255.255.0.0, and is
also called ''the 16-bit block."
3- Class C network: 192.168.0.0 through 192.168.255.255, has a default Subnet mask of 255.255.255.0,
also called the ''20-bit block''.
These ranges support many thousands of different ip addresses.
NB: It is common for people to assume that any address in this ranges can be chosen, and that the specific choice does not matter much. This is not true!
*** To choose and set specific static ip addresses suitable for your network, follow these guidelines:
1- Do not choose any address that end with ''.0'' or ''.255'', these addresses are generally reserved for use by 'Network protocols'. For example, the ip address 192.168.0.0 and 192.168.0.255 are the ''network and broadcast'' address respectively.[they are reserved addresses].
2- Do not choose the addresses at the beginning of a private range. IP addresses like 10.0.0.1 and 192.168.0.1 are commonly used by 'Network Routers' and other consumer devices.
3- Do not choose an address that falls outside the range of your Network mask. For example, to support all addresses in the 10.x.x.x private range, the network mask on all devices must be set to 255.0.0.0...class A, otherwise some static ip addresses in this range will not work.