subnet mask defines how many network bits our network address is using. In default condition subnet mask of the given ip address is 255.0.0.0 subnet mask may change if we do subnetting.
The Method used for changing your subnet mask would be based on what platform your using and its installed operating system.
It does not require a subnet mask.
If this is a default subnet mask, then it would be a class C subnet mask. If you are subnetting a network and this is not the default subnet mask, then it could be either a class A or class B.
The default subnet mask would be 255.255.0.0
The default subnet mask has a standard size. The custom subnet mask allows you to make subnets that are smaller or larger than the default.
Default Subnet mask: 255.255.0.0
The default subnet mask is 255.255.0.0
default subnet mask for 198.25.4.129
It is called a subnet mask. A subnet mask is used for dividing IP addresses into host and network addresses.
A default subnet mask gives you classful addressing on octet boundaries. A non-default subnet mask implies that you are subnetting a larger network into several smaller ones.
Subnet mask for the above is 255.0.0.0