Subnetting Trainer

CIDR Challenge

Calculate the subnet details

Find the network address, broadcast address, usable host range, and total usable hosts for the IP/CIDR below.

Easy

192.168.1.10/24

Network Address

Enter the subnet network in dotted decimal format.

Use standard dotted decimal notation.

Broadcast Address

The highest IP in the subnet.

The highest address in the subnet.

Usable Host Range — First IP

The first assignable host address.

Usually network address + 1.

Usable Host Range — Last IP

The last assignable host address.

Usually broadcast address - 1.

Number of Hosts

Enter the number of usable hosts in the subnet.

Use usable hosts, not total addresses.

Subnetting Rules

Prefix	Mask	Usable Hosts	Increment
`/24`	`255.255.255.0`	254	256
`/25`	`255.255.255.128`	126	128
`/26`	`255.255.255.192`	62	64
`/27`	`255.255.255.224`	30	32
`/28`	`255.255.255.240`	14	16
`/29`	`255.255.255.248`	6	8
`/30`	`255.255.255.252`	2	4

Session Guide