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Random IP Address Generator

Generate unique documentation or private IP addresses without accidentally targeting public systems.

Privacy: your files never leave your device. All processing happens locally in your browser.

How to use

  1. 1.Choose IPv4 documentation, private IPv4, or IPv6 documentation addresses.
  2. 2.Enter a count from 1 through 100 and select Generate addresses.
  3. 3.Copy the unique list and review private addresses for local conflicts before use.

About Random IP Address Generator

Random IP Address Generator creates safe example and local-network addresses for documentation, test fixtures, screenshots, training material, configuration samples, and offline development. Choose IPv4 documentation blocks, private IPv4 blocks, or the IPv6 documentation prefix, set a count from one through one hundred, and generate a unique list locally in the browser.

The documentation IPv4 mode uses only the three TEST-NET blocks reserved by RFC 5737: 192.0.2.0/24, 198.51.100.0/24, and 203.0.113.0/24. The IPv6 mode stays inside 2001:db8::/32, the prefix reserved by RFC 3849 for examples. These addresses should not be routed on the public Internet, so they are safer in tutorials and sample data than randomly selecting somebody's real public address.

Private IPv4 mode uses the RFC 1918 blocks 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. Private addresses are not globally routable, but they are not globally unique either: the same value can be used on many unrelated networks. Review a generated private address before assigning it inside a real network so it does not collide with an existing host, subnet, VPN, or route.

Browser cryptographic randomness chooses blocks and host values when Generate addresses is pressed. The list enforces uniqueness within the current result and does not probe, reserve, ping, or claim ownership of any address. The tool intentionally does not generate arbitrary public IPv4 targets. Copy the output into a fixture, document, or lab plan, then use a subnet calculator and the target environment's address-management process before operational deployment.

Methodology & sources

The generator uses rejection-sampled Web Crypto indices, selects only RFC 5737, RFC 1918, or RFC 3849 ranges, excludes IPv4 host octets 0 and 255 in generated examples, and deduplicates each result with a bounded retry loop.

Frequently asked questions

Does this generate public Internet targets?
No. It is limited to RFC documentation ranges and RFC 1918 private IPv4 blocks.
Are private IP addresses guaranteed to be unused?
No. Private addresses are only locally meaningful and can already be in use on your network, VPN, or lab.
Are the generated values uploaded or reserved?
No. Generation happens in your browser, and the tool does not contact or reserve any address.

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