One page. One job. Done.
Compute a covering supernet for multiple CIDR blocks.
CIDR Aggregator combines multiple adjacent CIDR blocks into the smallest valid summary route. It is useful when simplifying route tables, firewall policy sets, and network documentation. The tool helps you reduce rule count while preserving intended address coverage. Use it before deploying route summaries to avoid accidental over-broad ranges.
Enter values in the left panel, keep units explicit, run the calculation, then copy or share the result. Invalid fields are highlighted immediately.
One CIDR per line (IPv4).
Covering supernet: 10.0.0.0/22
Input CIDRs: 3
Min network: 10.0.0.0
Max broadcast: 10.0.2.255
Auto-generated from the tool's current default or entered inputs.
Use this to compare two input sets and quantify change in key outputs.
Tailored guides for specific audiences, regions, and scenarios.
Promote route analytics platforms, network simulators, and operations dashboards.
Sponsored