https://www.tincomply.com/api/v1/validate/company-name-lookup-by-ein
The company-name-lookup-by-ein endpoint retrieves the registered business name associated with a provided Employer Identification Number (EIN).
The following parameter is required for a request:
tin – The Employer Identification Number (EIN) of the company.The response object is companyNameLookupByEinResult, which contains the following property:
| Property | Description | 
|---|---|
| name | The official registered name of the company (if found). | 
If the EIN is valid and registered, the API returns the matching business name.
{
    "tin": "130871985"
}
Response:
{
    "id": "YZaaP7ZTTZOkce9mEYxdZQsh",
    "request": {
        "tin": "XXXXX1985",
        "requestDate": "2025-02-20T01:18:37Z",
        "requestedServices": "company-name-lookup-by-ein"
    },
    "companyNameLookupByEinResult": {
        "name": "INTERNATIONAL BUSINESS MACHINES CORPORATION",
        "message": "EIN lookup match found",
        "found": true,
        "completed": true
    }
}