IPv4 Address validator
Check whether text is a canonical IPv4 address and classify its range.
How to use the IPv4 Address validator
What does the IPv4 Address validator do?
Check whether text is a canonical IPv4 address and classify its range; It applies this page-specific rule: check whether text is a canonical IPv4 address and classify its range.
Which inputs does this validator use?
To check whether text is a canonical ipv4 address and classify its range, enter Input, Result; keep every value in the same example; select Check input when the values are ready; Start with a familiar case covered by this rule - Enter the value or list you want to check in the labeled controls - so the expected result can confirm the settings.
How should the validator result be read?
For a result intended to check whether text is a canonical ipv4 address and classify its range, enter the value or list you want to check in the labeled controls; read result together with the original input rather than as an isolated answer, and confirm that its units or structure match the intended use.
Are octets with leading zeroes valid?
When the goal is to check whether text is a canonical ipv4 address and classify its range, this implementation split dotted decimal octets, enforce digit and 0-to-255 rules, optionally reject leading zeroes, and classify private, loopback, link-local, multicast, or reserved ranges.
Can it identify private addresses?
When using the page to check whether text is a canonical ipv4 address and classify its range, the tool handles only the format and rules described on this page.
Limits and accuracy
When using this validator to check whether text is a canonical ipv4 address and classify its range, your work is processed in this browser tab; a passing result confirms the rules tested on this page, but it does not prove that an address, identifier, account, or remote resource exists; keep input until the output has been checked in its intended destination.
What IPv4 Address validator does
Check whether text is a canonical IPv4 address and classify its range.
Enter the value or list you want to check in the labeled controls. The IPv4 Address validator result stays separate so you can review it before copying, downloading, or using it elsewhere.
Your work is processed in this browser tab. Keep the original whenever a conversion changes formatting, dimensions, or precision.
Frequently asked questions
Are octets with leading zeroes valid?
This implementation split dotted decimal octets, enforce digit and 0-to-255 rules, optionally reject leading zeroes, and classify private, loopback, link-local, multicast, or reserved ranges. The output is validity status, canonical address, integer form, binary octets, and range classification.
Can it identify private addresses?
The tool handles only the format and rules described on this page. It handles four-octet IPv4 syntax and address classes, not IPv6 compression or network prefixes. It does not contact a remote validation or lookup service.
Does it test whether the address is reachable?
Input is processed by JavaScript in the current browser tab. Nothing entered in the tool is sent to Plain Tools; keep the original when the transformation is lossy.