Focused tool
CIDR overlap
Compare IPv4 and IPv6 networks for containment and overlap.
Run CIDR overlap
View full JSON response
Examples
Use a validated example to fill the form and execute the exact input.
192.0.2.0/24 192.0.2.0/25
Usage and limits
Public network lookups use the canonical v1 JSON API with the existing input validation, timeout, response-size, rate, and SSRF controls. Tools using an API route transmit your input to this service. Browser-only tools are explicitly labelled.
API documentation: API reference. Canonical route: /api/v1/cidr-overlap/.
Need a broader diagnosis?
Run Domain Diagnostics for a correlated result.
Run Domain Diagnostics