To upload a list of URLs to get company information, sign in to your account, then click on the "By Company URL" tab on the left side menu.
You will now be able to upload a list of urls. When uploading the URL list, make sure:
The excel file only has one column
The header of the file needs to be URL
The URL's should not contain http://www - so for example, the URL should look like this: google.com or apple.com