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IP Classifier

Classify IPv4/IPv6 addresses by private, loopback, multicast, and more.

Last validated: 2026-02-14

Use this free online IP Classifier to identifies whether an IP belongs to private, loopback, multicast, reserved, or public ranges. It is useful when you need a focused browser-based utility that turns a specific set of inputs into a practical result quickly. The form focuses on IP address (v4 or v6) and returns IP Input, Classification, so you can move from input to answer without setting up a spreadsheet or custom script. Run one realistic example, adjust the inputs, and compare how the result changes before you copy or share it. Save the inputs with the result when the output will be shared, audited, or used as part of a larger workflow.

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Input Pattern

Enter values in the left panel, keep units explicit, run the calculation, then copy or share the result. Invalid fields are highlighted immediately.

IP Input

Classification

IP version: IPv4

Private: Yes

Loopback: No

Link-local: No

Multicast: No

Documentation range: No

Unspecified: No

How to use this tool

  1. Enter IP address (v4 or v6) for the ip classifier, keeping units, dates, or text format consistent with the form labels.
  2. Check optional fields and assumptions before running so the result matches the workflow you have in mind.
  3. Click "Run the tool" and review IP Input, Classification for the primary output.
  4. Copy or share the result together with the inputs so the output can be reproduced later.

Worked Example

Auto-generated from the tool's current default or entered inputs.

Example Inputs

  • Ip: 192.168.1.10
  • Version: 4
  • Private: true
  • Loopback:
  • Link local:
  • Multicast:
  • Documentation range:
  • Unspecified:

Expected Outputs

  • Version: 4

Interpretation

Formula References

Assumptions

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