How can I lookup the business associated with a FEIN?
In most cases you cannot do "reverse lookup" on tax id in the US. You can verify, but for that you need to have more than just the FEIN/SSN. You should also have a name, and some times address. Non-profits, specifically, have to publish their EIN to donors, so it may be easier than others to identify those. Other businesses may not be as easy to find just by EIN.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
How can I lookup the business associated with a FEIN?

### Response:
In most cases you cannot do "reverse lookup" on tax id in the US. You can verify, but for that you need to have more than just the FEIN/SSN. You should also have a name, and some times address. Non-profits, specifically, have to publish their EIN to donors, so it may be easier than others to identify those. Other businesses may not be as easy to find just by EIN.