◇Free
IPv4 CIDR membership
Check whether an IPv4 address is inside a CIDR range.
Check whether an IPv4 address is inside a CIDR range. Compare an address with the normalized network calculated from a supplied address/prefix pair. The result returns a boolean and the canonical network boundary.
How to use
- Enter your text, values, or image.
- Adjust the options and run the tool.
- Copy or download your result.
Worked example
Example input
IPv4 address: 10.4.5.6 CIDR network: 10.0.0.0/8
Example result
{
"included": true,
"network": "10.0.0.0/8"
}Limitations and details
Only IPv4 CIDR prefixes from 0 to 32 are supported; membership alone does not imply routing access or authorization.
Inputs and options
- IPv4 address
- Text
- CIDR network
- Text
Frequently asked questions
Is this tool free and private?
Yes. All 300 tools are free in this phase. Processing happens in your browser; your input and files are not sent to our servers.