CIDR Calculator

Only application with Subnetting answers explained in detail.

Subnetting Practice Features :
Practice Mode :
1. CIDR Practice module
2. Subnetting Practice (VLSM) Module.

Subnetting Tutorial :
1. CIDR Tutorial
2. Subnetting Tutorial

CIDR Calculator is a simple IP subnet calculator for network engineers to quickly determine what the address range is of a subnet.