Kubernetes CIDR Collision Checker
Check Pod, Service, and node IPv4/IPv6 CIDR lists for cross-group overlap entirely in the browser.
This tool handles input and primary processing in your browser and is designed not to send the input to QuickKit’s server.
Avoid live production secrets; use dummy or masked data where possible. Data handling details
How it works
Compares canonical network prefixes across the Pod, Service, and node groups. IPv4 is compared only with IPv4 and IPv6 only with IPv6. Entries inside the same group are not compared because the tool is for role collisions; use the general overlap checker for same-list duplicates. Network addresses are required, input is capped at 200 entries, and no cluster or CNI is queried. A clean result does not validate CNI, kube-proxy, cloud routing, or existing routes.