CIDR Calc
VLSM Planner
Allocate subnets based on host requirements while minimizing wasted address space.
Plan
Allocations
Sales
10.0.0.0/26
10.0.0.0 – 10.0.0.63
Engineering
10.0.0.64/27
10.0.0.64 – 10.0.0.95
IoT
10.0.0.96/28
10.0.0.96 – 10.0.0.111
Mgmt
10.0.0.112/30
10.0.0.112 – 10.0.0.115
Remaining space
140 addresses
Largest fit: /25