There's no easy way to do this. The easiest is calling the company. Sometime individual state agencies have a lookup to find information about companies incorporated in their state. For example, Florida has SunBiz.org
Here some info from Chron.com (http://smallbusiness.chron.com/look-up-ein-number-4268.html:(
1. Look up an EIN number for a publicly traded company on their
Investor Relations website. Most have an SEC Filings page. On the filings page,
open any Securities and Exchange Commission filing document. The EIN must be
listed on the first page of the document.
2. Utilize the SEC EDGAR online Forms and Filings database. This
is a free alternative you can use when a company doesn't post its
SEC filings online. The EDGAR database contains the SEC filings of all publicly
traded corporations.
3. Subscribe to an online commercial database service if you expect
to look up EIN numbers on a regular basis. For example, Dun &
Bradstreet Selectory service lists some 14 million EINs as of
2010.
4. Look up EIN numbers using a pay-as-you-go database service.
Database providers, including KnowX, give you the option of paying for only the
searches you perform instead of having to subscribe to their service. This is a
good option if you only need to find a few EIN numbers.
5. Check commercial EIN database providers for special offers.
Many allow you to make a few searches for free to motivate you to try their
service. This is a good way to make sure an EIN database provides all the
information you need on businesses and other organizations.
