Smaller than 65.56.0.0/14. With just the IP, there is no way to know the netmask. We can see that Level 3 owns that address and their block is a /14.
It could be a /30 with a gateway of 65.56.25.18.
it could be a /29 with a gateway of 65.56.25.18-22.
In short, there is no way to definitively know the netmask from the IP only.
Example IP address of 192.168.1.123 with a subnet mask of 255.255.255.0
This is a network address
255.255.255.0
what is the subnet mask for this hst IP prefix format ? Host IP Address: 183.91.104.16
Because each IP defines certain subnet mask.
if the ip address is 192.168.2.1 then the subnet mask should be 255.255.255.0
Subnet mask for the above is 255.0.0.0
it is a class c address..so default subnet mask is 255.255.255.0 it is a private address...
That depends on the subnet's subnet mask.
255.255.255.0
255.255.0.0
There is no set subnet mask for different ip configurations. The most common default subnet mask is 255:255:255:0 though, if that helps.