Random IP Address Generator

How to use

1. 1️⃣
   Choose your options above
2. 2️⃣
   Click Generate
3. 3️⃣
   Copy your result

Detailed instructions

1. Set the count field to how many IP addresses you need, between 1 and 50.
2. Choose IPv4 for standard dot-decimal addresses or IPv6 for hexadecimal colon-notation addresses.
3. Set 'Public IPs only' to Yes if your test involves geolocation lookups or internet traffic simulation.
4. Click Generate to produce the address list, then copy the output directly into your script, log file, or test fixture.

Use Cases

• •Seeding a PostgreSQL access_logs table with realistic public IPv4 addresses for staging
• •Unit testing CIDR range matching functions in Jest with a varied set of 20+ addresses
• •Feeding a geolocation API in Postman to verify country, region, and ISP fields parse correctly
• •Generating dual-stack IPv4 and IPv6 addresses to test nginx dual-stack virtual host configs
• •Populating rate-limiting middleware fixtures with 50 unique public IPs to catch per-IP throttle bugs

Tips

• →For geolocation API tests, always use public IPs only — private ranges return null from most providers and will skew your results.
• →When testing dual-stack applications, run two separate batches (one IPv4, one IPv6) and interleave them to simulate realistic mixed traffic.
• →Paste a batch of 50 IPs into a spreadsheet with a VLOOKUP against known IANA reserved ranges to quickly spot any edge-case addresses before using them.
• →For rate-limiting tests, generate IPs in batches of 10–20 and use them as X-Forwarded-For header values — most rate limiters key off this header.
• →If you need reproducible test data across your team, generate once, commit the list to your repo as a fixture file, and reference it in all related tests.
• →IPv6 addresses work well for testing input sanitization — many older regex validators fail on the colon notation, making them valuable for security QA.

FAQ