Network

VLSM Calculator

Variable Length Subnet Masking (VLSM) — divide a network into subnets of different sizes based on host requirements. Enter a base CIDR (e.g. 192.168.1.0/24 ) and a list of required hosts. Subnets are allocated largest-first for efficient address usage.

Enter number of usable hosts per subnet. Labels are optional (e.g. "Office: 50").
Total Addresses256
Used116
Remaining140
Subnet 1192.168.1.0/26
50 of 62 usable hosts12 spare
Subnet Mask255.255.255.192Network192.168.1.0Broadcast192.168.1.63Usable Range192.168.1.1 - 192.168.1.62
Subnet 2192.168.1.64/27
30 of 30 usable hostsexact fit
Subnet Mask255.255.255.224Network192.168.1.64Broadcast192.168.1.95Usable Range192.168.1.65 - 192.168.1.94
Subnet 3192.168.1.96/28
10 of 14 usable hosts4 spare
Subnet Mask255.255.255.240Network192.168.1.96Broadcast192.168.1.111Usable Range192.168.1.97 - 192.168.1.110
Subnet 4192.168.1.112/30
2 of 2 usable hostsexact fit
Subnet Mask255.255.255.252Network192.168.1.112Broadcast192.168.1.115Usable Range192.168.1.113 - 192.168.1.114
Share

marduc812

© 202620260824_1c411cc