← Explorations
Subnet & CIDR
See how a slash carves up an IP block.
How it works
Try it
Quiz
Type an IP, drag the prefix slider. Everything below updates live.
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24
Prefix slider
10.0.0.0/8
172.16.0.0/16
192.168.1.0/24
192.168.1.0/26
192.168.1.128/25
Each octet must be 0 to 255.
IP bits
Mask bits
Network portion
Host portion
Mix
CIDR to mask
Mask to CIDR
Usable hosts
Network or broadcast
Score:
0 / 0 (0%)
Streak:
0
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