Each jurisdiction encodes something different. A US EIN's first two digits identify the IRS campus that issued it; a Canadian business number carries a Luhn check digit and a program suffix. Both are handled correctly here.
What you can control
- US EINs use real campus prefixes, so the format matches an issued number.
- Canadian business numbers carry a valid Luhn check digit and the
RT0001GST program suffix. - Seven jurisdictions with the correct prefix, length and separator style for each.
- A matching company name and registration date turn the identifier into a complete entity record.
What this is not
These match the format of real registrations without being issued to any entity. A lookup against a tax authority's register will find nothing.
Questions
Are these registered with a tax authority?
No. They follow the correct format and, where applicable, carry valid check digits, but no entity is registered under them.
What do the first two EIN digits mean?
The IRS campus that issued the number. The prefixes here are drawn from ranges genuinely in use, so the format is right.
What is the RT0001 suffix on a Canadian number?
The program account. RT is GST/HST and 0001 is the first account of that type. The nine-digit business number is shared across all a company's programs.