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🏠 Check private vs. public IP space

Private IP Checker

Check whether an IPv4 or IPv6 address belongs to private, local, loopback, link-local, or public address space directly in your browser.

Updated July 25, 2026✓ Free to useLocal browser processing
🔒 Local browser processing · No input upload

Use the Private IP Checker

Local-onlyRuns in your browser. The value you enter stays on this device.
About this utility

How does the Private IP Checker work?

Private IP Checker performs address or network math directly in the browser. Enter an IPv4 or IPv6 address you want to classify; the tool can validate and calculate without sending the entered value to a lookup server.

Use the result for whether the address belongs to a private/local range or appears to be public address space. This is especially useful when you need quick network context without a command-line calculator. A public classification means the address is outside the local/private ranges checked; it does not prove the address is currently routed or assigned.

Instant local calculation

Validate or calculate directly in the browser without a server lookup.

Normalized network details

Present address data in a consistent format that is easier to compare.

Scope-aware result

Explain what the calculation proves and what it cannot tell you about real connectivity.

Best practices

How to get a useful Private IP Checker result

  1. Enter an IPv4 or IPv6 address you want to classify exactly and remove surrounding punctuation copied from logs when necessary.
  2. Confirm whether you are working with IPv4 or IPv6 before comparing ranges or subnet results.
  3. Use the calculated classification or range as network context, not as proof that an address is online or trusted.
  4. When changing a real network, compare the result with router, DHCP, firewall, and routing configuration before applying it.

Important: A public classification means the address is outside the local/private ranges checked; it does not prove the address is currently routed or assigned.

Common use cases

When to use the Private IP Checker

Home network addressesConfirm common 10.x, 172.16–31.x, and 192.168.x addresses are private.
IPv6 local addressingIdentify unique-local or link-local IPv6 addresses.
Configuration reviewCheck whether a service is bound to a private or public-looking address.
Support conversationsExplain why a router address differs from the public IP seen on the internet.
Continue troubleshooting
Related utilityCIDR CalculatorNetwork, mask, broadcast, range, and host-count information.Related utilityIP Range CalculatorThe normalized range boundaries and number of addresses included.Related utilityMAC Address LookupNormalized address details, local/universal flags, and vendor data when the oui is present.

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Questions and answers

Frequently Asked Questions

What does the Private IP Checker tell me?

It returns whether the address belongs to a private/local range or appears to be public address space. A public classification means the address is outside the local/private ranges checked; it does not prove the address is currently routed or assigned.

What should I enter in the Private IP Checker?

Use an IPv4 or IPv6 address you want to classify. Enter only the information needed for the check and verify it before running the tool.

Does the Private IP Checker send my input anywhere?

The interactive analysis runs in your browser, so the value you enter is not sent to TipsMake for processing.

How accurate is the Private IP Checker?

The tool is designed to report the calculation or observation available to its execution method. A public classification means the address is outside the local/private ranges checked; it does not prove the address is currently routed or assigned.