Focused tool

IP calculator

Calculate network details from an IPv4 or IPv6 CIDR.

Run IP calculator

Examples

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

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/ip/.

Need a broader diagnosis?

Run Domain Diagnostics for a correlated result.

Run Domain Diagnostics