Step 1
How to use it 1
Enter IP and adjust the CIDR slider.
ToolsSubnet Calc
network
Subnet Calc
CIDR calculator
How to use it
1
Examples to try
3
Frequently asked questions
4
Continue with the next step
3
Subnet CalcCIDR calculator
How to use it
9Calculate network range, broadcast address, and usable hosts from an IP and CIDR mask.
How to use it
9Calculate network range, broadcast address, and usable hosts from an IP and CIDR mask.
What teams use it for
- Designing enterprise IP addressing schemes
- Configuring VLANs and network segmentation
- Planning container network ranges for Kubernetes
- Implementing network isolation for security
- Allocating VPC CIDR blocks in cloud platforms
- ISP customer IP address allocation
- Troubleshooting IP configuration issues
- Calculating available hosts for network planning
Examples to try
6Example 1: Start with a small input to validate the format.
Examples to try
6Example 1: Start with a small input to validate the format.
Examples to try
- Example 1: Start with a small input to validate the format.
- Example 2: Try a real-world payload to confirm the output.
- Example 3: Compare the result against your expected structure.
Common pitfalls
- Mixing formats or encodings in a single input.
- Copying output without reviewing edge cases.
- Skipping validation before sharing the result.
Frequently asked questions
4What is CIDR?
Frequently asked questions
4What is CIDR?
What is CIDR?
Classless Inter-Domain Routing, a method for allocating IP addresses.
Is it free to use?
Yes, this tool is free to use.
What does /24 mean?
It means 24-bit network prefix.
How many usable hosts?
It excludes network and broadcast addresses.
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