📡 Networking
CIDR to IP Range & Subnet Calculator
Enter a CIDR block to instantly calculate the network address, broadcast address, usable IP range, subnet mask, wildcard mask and total hosts. Also split a CIDR into smaller subnets.
📖 How to Use This Tool
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1
Enter a CIDR block like
10.0.0.0/24 in the input field2
View network address, broadcast, usable hosts and subnet mask
3
Use Subnet Splitter to divide a block into smaller subnets
4
Results update in real-time as you type
📝 Examples
Class C subnet
Input: 192.168.1.0/24
Output: 254 usable hosts, mask 255.255.255.0
/16 network
Input: 10.0.0.0/16
Output: 65,534 usable hosts, mask 255.255.0.0
📡 Enter CIDR Notation
10.0.0.0/8
172.16.0.0/12
192.168.0.0/16
192.168.1.0/24
10.0.0.0/28
Private RFC 1918 ranges: 10.0.0.0/8 · 172.16.0.0/12 · 192.168.0.0/16. These are not routable on the public internet and are safe to use inside VPCs and private networks.