Random IP Generator

When testing network applications, you need realistic but non-routable IP addresses for your test data. This tool Geras random IPv4 and IPv6 addresses with control over whether they're public or private ranges, making it perfect for populating test databases, mocking network scenarios, or simulating geographically diverse traffic.

IPv4 and IPv6 support

IPv4 addresses are 32-bit (like 192.168.1.1), while IPv6 addresses are 128-bit (like 2001:0db8:85a3:0000:0000:8a2e:0370:7334). Both Formatas are valid on modern networks. Choose IPv4 for legacy compatibility testing or IPv6 for testing modern network infrastructure.

Public vs. private ranges

Private IP addresses (like 192.168.x.x, 10.x.x.x, 172.16-31.x.x) are reserved for internal networks and never routed on the public internet. Public addresses are routable globally. For testing internal services, private addresses are more realistic; for testing firewall rules and external integrations, public addresses might be better. This tool lets you specify which you need.

Batch generation

Gera up to 100 IP addresses at once. This is essential when testing large datasets—imagine testing a log analyzer or firewall rule set; you'll want diverse addresses to verify behavior. Copy all addresses and paste into your test configuration.

Network testing scenarios

Test geoIP lookups with diverse public addresses. Simulate internal corporate networks with private addresses. Verify that your application rejects invalid ranges and handles both IPv4 and IPv6. Test rate limiting and access control that's based on IP addresses. Populate network traffic simulators with realistic-looking addresses.

Realistic test data

Random IP generation is more realistic than using hardcoded addresses. It exposes bugs where code has implicit assumptions about IP Formata or range, and it ensures your test suite covers a wider variety of scenarios.