Random IP Generator - Generate Random IP Addresses Instantly

Random IP Generator

What this random IP generator does

This page creates random IPv4 addresses, IPv6 addresses or a mixture of both. You choose the type, set how many addresses you want and press generate. The result appears in a text area, one address per line, with a total count. You can copy the list or download it as a text file. It is useful for test data, placeholder configuration, classroom examples and UI mockups where a realistic-looking address is needed without contacting a real host.

IPv4 and IPv6 formats

An IPv4 address has four decimal octets separated by dots, such as 192.168.1.10. Each octet ranges from 0 to 255. An IPv6 address has eight hexadecimal groups separated by colons, such as 2001:db8:85a3::8a2e:370:7334. This generator creates full eight-group IPv6 strings; it does not zero-pad every group or compress runs of zeros with the double-colon shorthand. Both forms are valid enough for text placeholders, but they are not checked against routing rules.

How to generate a list

Choose IPv4, IPv6 or Mixed. Mixed selects each address independently, so a batch can contain both families. Set the count from 1 to 10,000. Press the generate button. The page also creates ten addresses when it loads, so you can see a sample immediately. The output is plain text with line breaks. Use the copy button for the clipboard or the download button for a .txt file.

What random means here

The generator uses JavaScript's Math.random, not a cryptographic random source. That is fine for mock data, but it is not suitable for security tokens, passwords, cryptographic keys or anything that must be unpredictable to an attacker. The values are generated independently, so duplicates are possible, especially in a large IPv4 batch. The page does not deduplicate the list. If uniqueness matters, check the output or generate a smaller set.

No validation of private or reserved ranges

The generator can produce loopback addresses such as 127.x.x.x, private addresses in 10.x.x.x or 192.168.x.x, link-local addresses, multicast ranges and other reserved blocks. It does not filter them, and it does not check whether an address is assigned to a real network. That is convenient for placeholders but dangerous if you paste the list into a firewall rule, a blocklist or a routing configuration. Treat every generated value as fictional until you verify it.

Count limits and the file-name quirk

The count field is clamped between 1 and 10,000. If you type a larger number, the generator uses 10,000 addresses. The download file name still uses the number you typed, so a request for 50,000 can produce a file named for 50,000 while containing 10,000 lines. An empty count can produce a file name containing NaN. Check the reported total before relying on the file name.

When random IPs are useful

Use them to fill a test database, to show a table layout with realistic-looking values, or to create examples for documentation. They are also handy for testing how a form handles IPv4 and IPv6 text. Do not use them to impersonate a real user, to probe a network or to create fake analytics that look like genuine traffic. The values are not tied to any real device or location.

Privacy and local processing

The generation runs in your browser. No address is sent to Newisty and no lookup is performed. The page does not know your real IP address and does not attach it to the list. Copying or downloading the result is handled by your browser and operating system. The output is fictional data, not a record of real network activity.

Limitations

There is no deduplication, no sorting, no subnet calculation, no CIDR notation, no port number and no geolocation. IPv6 strings are not compressed, and the generator does not create a valid prefix for a specific network. The random source is not cryptographic. The page does not guarantee that an address is unused, routable or safe. It only produces text that looks like an IP address.

Common problems

If the download name has NaN, enter a number in the count field. If you asked for 50,000 but received 10,000, the limit was applied. If the list contains duplicates, that is expected for independent random draws. If an IPv6 address looks longer than usual, it is because the page does not compress zero groups. If the copy button does not work, select the text manually.

A practical workflow

Decide whether you need IPv4, IPv6 or both. Generate a small sample first and check the format your test expects. If uniqueness is required, paste the list into a spreadsheet and remove duplicates. If the values will be used in a configuration file, replace them with reserved documentation ranges rather than random public addresses. Keep the generated list separate from real production data.

What not to do

Do not use these addresses as security tokens or passwords. Do not paste them into a firewall, blocklist or routing table without checking them. Do not assume an address belongs to a real person or company. Do not use the list to fake traffic, evade a limit or impersonate a user. Do not treat the output as a valid network plan just because it looks like an IP address.

For documentation and examples, consider reserved ranges such as 192.0.2.0/24, 198.51.100.0/24 and 203.0.113.0/24 instead of random public addresses. They are set aside for examples and reduce the chance of pointing a reader at a real network.

Using the output to test address parsing

The generator's IPv6 format is useful for testing code that compares or stores addresses. Each group is written without leading zeros and the :: shorthand is never used, so a value such as 2f1:0:7:e44b:1d2:a0f3:bb1:52c8 appears in full. Many libraries and databases convert addresses to a canonical form, which compresses zero runs and lowercases letters. Paste a batch into your application, read the values back, and check that your code treats the stored form and the original text as the same address. If it compares raw strings, two spellings of one address will look different, which is a common source of duplicate-record and allowlist bugs.

Long eight-group IPv6 strings are also a quick check for layouts. Tables, log viewers and CSV exports that fit IPv4 comfortably can cut IPv6 off or wrap it in awkward places.

About the Mixed split

In Mixed mode each line is decided by its own coin flip, roughly half IPv4 and half IPv6. The split is not forced to be even: a list of ten can contain seven of one family and three of the other, and a list of one is a single family. If your test needs an exact number of each, generate an IPv4 batch and an IPv6 batch separately and combine them, then shuffle the lines if order matters.

Frequently Asked Questions