Focused tool

IP calculator

Calculate network details from an IPv4 or IPv6 CIDR.

Run IP calculator

View full JSON response

Examples

Use a validated example to fill the form and execute the exact input.

192.0.2.17/27
2001:db8::1/64

Usage and limits

Public network lookups use the canonical v1 JSON API with the existing input validation, timeout, response-size, rate, and SSRF controls. Local transformations remain in this browser.

API documentation: API reference. Canonical route: /api/v1/ip/.