[header] How to check if a company is genuine [title] Check the company's website for a legitimate telephone number and address. [step] If there is no way to contact this company offline, this may be a red flag that the business is not legitimate. Since emails and domain names are easy to obtain, having an email address is not as trustworthy as offline contact information. 
[substeps] Remember that both phone numbers and addresses are now super easy to fake. There is a whole industry in providing fake area code and 800 numbers.