How to Generate Random IP Addresses Online (2026)
You can generate random IPv4 and IPv6 addresses instantly with our free Random IP Address Generator. Choose IPv4 only, IPv6 only, or mixed mode, set custom octet ranges for IPv4 addresses, and generate as many addresses as you need with a single click.
Why Generate Random IP Addresses?
Random IP addresses are essential for network testing, development environments, security research, and simulation scenarios. Developers need fake IPs for populating test databases, configuring mock servers, testing firewall rules, and validating network code without using real addresses. Our generator produces valid, properly formatted addresses that work for any non-production use case.
How to Use Our Random IP Generator
- Open the Random IP Address Generator and select IPv4, IPv6, or Mixed mode.
- Set how many addresses to generate.
- Optionally customize the IPv4 octet ranges — for example, fix the first two octets to 192.168.x.x to generate local network addresses.
- Click Generate and copy the results.
Example Outputs
| Mode | Output |
|---|---|
| IPv4 | 192.168.1.47, 10.0.0.132, 203.0.113.88 |
| IPv6 | 2001:0db8:85a3:0000:0000:8a2e:0370:7334 |
| Mixed | 192.168.1.47, 2001:db8::1, 10.0.0.55, fe80::1 |
FAQ
What is the range of IPv4 addresses?
IPv4 addresses range from 0.0.0.0 to 255.255.255.255. Each of the four octets is a number from 0 to 255. Our generator respects these limits and lets you constrain specific octets.
What format do IPv6 addresses use?
IPv6 addresses are 128-bit addresses written as 8 groups of 4 hexadecimal digits, like 2001:0db8:85a3:0000:0000:8a2e:0370:7334. Our generator produces valid, properly formatted IPv6 addresses.
Can I generate addresses for a specific subnet?
Yes. For IPv4, you can fix specific octets. Setting the first octet to 10 generates addresses in the 10.x.x.x range. Setting the first two to 192 and 168 generates 192.168.x.x local network addresses.
Are the generated addresses truly random?
Yes. The generator uses cryptographically secure random number generation in your browser. Each click produces different results.
Try our free Random IP Address Generator to create random IPv4 and IPv6 addresses for testing and development.