Depending on which plan you have selected, your hosting account will be allocated either 5, 15, or 35 website slots.
A common question that we are asked is whether subdomains and subfolders count as slots in the website allowance.
Subdomains take up hosting slots.
In short, subdomains do take up available slots in your hosting plan (except for WP Multisite installations).
If you are using subdomains for your Multisite installation with Subdomains, those need to be added as aliases in your hosting plan. Aliases do not take up from your hosting slots.
Subfolders don’t take up hosting slots.
Subfolders don’t take up hosting slots, however, they share the allocated resources for one website slot. Therefore, you could have unlimited subfolders with different websites under a domain and not use up your website allocation, though they will all share the same resources, as we mentioned.
If you have any other questions on the topic, don’t hesitate to contact the WPX Support Team via live chat (use the bottom right-hand widget) and they will respond and help within 30 seconds or less.