# What Is The Formula For Determining The Number Of Possible Hosts On A Network?

To calculate the number of possible hosts per subnet, use the formula 2h - 2, where h equals the number of host bits. The reason two addresses must be subtracted is because of the network address and the broadcast address. There are two ways to determine the number of host bits.

## How do you calculate the number of hosts per subnet?

Also, how do you calculate the number of hosts? The total number of IPv4 host addresses for a network is 2 to the power of the number of host bits, which is 32 minus the number of network bits. For our example of a /21 (network mask 255.255. 248.0 ) network, there are 11 host bits ( 32 address bits – 21 network bits = 11 host bits ).

## How to find the network and host address?

Finding the network and host address, and maximum number of host addresses. A subnet of an IP network has a range of IP host address from 172.19.40.1 to 172.19.47.254.

## How can I find the maximum number of hosts?

To find the maximum number of hosts, look at the number of binary bits in the host number above. The easiest way to do this is to subtract the netmask length from 32 (number of bits in an IPv4 address).

## How to calculate the host number in an IPv4 address?

The easiest way to do this is to subtract the netmask length from 32 (number of bits in an IPv4 address). This gives you the number of host bits in the address. At that point... The reason we subtract 2 above is because the all-ones and all-zeros host numbers are reserved.

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