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IP Classifier

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

Last validated: 2026-02-14

IP Classifier identifies whether an IP belongs to private, loopback, multicast, reserved, or public ranges. It is useful for debugging ACL behavior and validating whether an address should be routable on the public internet. The tool gives fast category feedback for IPv4 and IPv6 inputs. Use it when triaging network access anomalies.

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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. Paste the IP address to classify.
  2. Run the tool and read the detected address class.
  3. Use classification results to adjust routing, NAT, or security rules.

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

Scenario Compare (A vs B)

Use this to compare two input sets and quantify change in key outputs.

Scenario A

Scenario B

Formula References

Assumptions

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