MockAddress – Random US tax-free state address generator

Summary: MockAddress is a frontend-only tool that generates authentic-format US tax-free state addresses, ZIP codes, and phone numbers for testing and development. It supports additional identity, credit card, and network data generation, all running entirely in the browser without backend dependencies.

What it does

MockAddress creates random, verifiable address data conforming to official postal standards, along with optional identity and credit card fields for form and payment testing. It also generates MAC addresses with vendor lookup and IPv6 Link-Local derivation, suitable for network testing.

Who it's for

Developers and QA engineers needing realistic test data for signups, e-commerce forms, payment flows, and network simulations.

Why it matters

It provides reliable, privacy-focused test data generation entirely in the browser, eliminating backend dependencies and enabling deployment on static hosting platforms.