Are these real company numbers?

No. They are randomly generated strings that merely follow the structural format of each jurisdiction. They are not registered to any real company and should never be used to impersonate a business.

What is the format of a UK company number?

A UK Companies House number is eight characters — either eight digits for England and Wales, or a two-letter prefix such as SC for Scotland or NI for Northern Ireland followed by six digits. This tool generates both styles.

What format does a US EIN follow?

An Employer Identification Number is nine digits written as two digits, a hyphen, then seven digits (XX-XXXXXXX). The first two digits are an IRS campus prefix; this tool only uses prefixes from the published valid ranges.

Does this tool send data anywhere?

No. All formats and random generation run entirely in your browser, so nothing is created on or sent to a server.

Can I use these in production?

No. They are for development, demos, and test fixtures only. Validating them against a real registry such as Companies House or the IRS will fail because no such company exists.

Fake Company Registration Number Generator

A company registration number is the unique identifier a government registry assigns to an incorporated business — like a UK Companies House number or a US Employer Identification Number (EIN). When building onboarding flows, KYC checks, or business directories you need realistic test values that match the expected format. This tool generates fictional, correctly-structured numbers for major jurisdictions. They are for demos and testing only and are not registered to any real company.

How it works

Each jurisdiction has its own structure, which the generator reproduces faithfully:

UK Companies House — eight characters. England and Wales numbers are eight digits; Scotland and Northern Ireland use the prefixes SC or NI followed by six digits.
US EIN — nine digits formatted XX-XXXXXXX. The leading two digits are an IRS campus prefix, so the tool draws only from the published valid prefix ranges.
Germany (Handelsregister) — a court division code (HRA for partnerships or HRB for limited companies) followed by a registration number.

The random parts are filled in locally and assembled into the correct layout for the chosen jurisdiction.

Tips and notes

These values pass simple format checks but will never match a real registry lookup, which is exactly what you want for safe test data.
Use the UK prefixed style (SC/NI) when you need to test that your parser handles non-numeric company numbers.
Generate a batch to seed a database table or fill a CSV of fixtures in one go.
Everything runs locally with no API call, so you can generate as many as you need.