# How is last host of last subnet calculated?

Contents

## How do you calculate hosts per subnet?

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.

## How is first host and last host calculated?

Therefore it’s 192.168. 86.1 for the first usable host address. The same can be said when calculating the last usable host address, which is the broadcast address minus one.

Example of calculating network and IP properties.

Usable number of hosts 254

## What is the last address of a subnet used for?

The last address, 255 in the case of a /24 network, is the broadcast address. Devices connected to the network use it to send a broadcast, a message intended for all devices on the network.

/ 24 256 254
/ 23 512 510
/ 22 1024 1022
/ 21 2048 2046

## What are the valid hosts in each subnet?

Answer: The valid hosts are the numbers between the subnet number and the mask. For the 64 subnet, the valid host range is 64-126. For the 128 subnet, the valid host range is 129-190.

THIS IS INTERESTING:  Does web hosting provide email?

## How many hosts are in a 32 subnet?

Subnet Cheat Sheet – 24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References

/32 255.255.255.255 1
/31 255.255.255.254 2
/30 255.255.255.252 4
/29 255.255.255.248 8

## How do I find my last Host ID?

The host ID is calculated by using the remainder of the subnet mask as it applies to the computer’s IP address. Obtain the subnet mask of the device. For example, on a Windows computer, open a command prompt and type “ipconfig” and press the “Enter” key.

## What is first and last host address?

First Address: Base address of subnet with last octet incremented by one. Last Address: Base address of next subnet after this one, less two in the last octet (which may require changing a “0” in the last octet to “254” and reducing the value of the third octet by 1).

## What is Netmask and Gateway?

on a network. … A gateway IP refers to a device on a network which sends local network traffic to other networks. The subnet mask number helps to define the relationship between the host (computers, routers, switches, etc.) and the rest of the network.