Is there any way to know if a magento is community or enterprise without accesing the code?

Check for URL base_website_URL/magento_version for Magento version

You can detect if a website is running Magento Enterprise Edition by hitting website_base_url/giftcard/customer in your browser. If you get a 404 Page Not Found error then that means they are NOT running MEE (Magento Enterprise Edition). If you get redirected to a login page that means they ARE most likely running MEE.

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