Subnet Mask to Wildcard Mask

Subnet Mask to Wildcard Mask Converter..

IPv4 Validator

Validate if an ip is a valid ipv4 addres..

IP to Binary

Ip to Binary Converter..

ip class checker

Check to see the class of an ip address...

Generate Random Ip

Generates a random ip address..

Subnet Calculator

Calculate How Many Subnets you need




What is a Subnet

Subnetting is when the network is broken into different block sections using logical addresses to segregate each block. Internet Protocol (IP) has two parts a network address and a host address. Subnet mask is used to determine how many bits will be used to represent the network address. Subnetting is great to split up the network into more manageable sections or different departments. Subnet masks are 32 bits in length the network bits are in all “1” s and the host bits are in “0” s. In each subnet two addresses are reserved for the network address which ends in 0 and the broadcast address which ends in 1. These reserved addresses cannot be used for the hosts on each subnet the rest of the addresses in the subnet can be used.

CIDR Conversion Table

CIDR Hosts Netmask Binary Subnet Mask
/24 254 11111111 11111111 11111111 00000000 255.255.255.0
/25 128 11111111 11111111 11111111 10000000 255.255.255.128
/26 64 11111111 11111111 11111111 11000000 255.255.255.192
/27 32 11111111 11111111 11111111 11100000 255.255.255.224
/28 16 11111111 11111111 11111111 11110000 255.255.255.240
/29 8 11111111 11111111 11111111 11111000 255.255.255.248
/30 4 11111111 11111111 11111111 11111100 255.255.255.252