An Internet Protocol address, more commonly known as an IP address is a unique identity assigned to every device or computer that connects to the internet. IPs that connect directly to the internet are called Public IPs.
As of now, two versions of IP address are in use: IP Version 4 (IPv4) and IP Version 6 (IPv6). Both these versions are tasked with the same responsibility: to uniquely identify any device connection to the Internet, based on its location.
A better version of IPv4 was needed to address the issue of shortage of IPs in the near future. So, in 1995 IPv6 was introduced to make sure that there would be enough IP address for devices connecting to the internet.
Every internet user needs a public IP to connect to the internet. Usually, the public IP is provide by a user's Internet Sservice Provider (ISP), which allows the user to connect to the internet.
Private networks like the ones at schools, offices, universities, homes etc. use private IP addresses to communicate with other devices connected to the same private network. These devices do not connect directly to the internet, but first connect to the server of the network, and the server then connects to the internet.
Private IPs are usually assigned by servers used to establish a private network.
A private IP address is needed by a user who wants to be anonymous, secure and private on the internet. Private IPs are not bought or sold. Companies like PureVPN reserve a pool of private IPs for themselves, which in turn allows their users to connect to the internet.
Since PureVPN is a private network, PureVPN users are assigned a private IP by PureVPN's servers. These private IPs are not used by anyone else in the world except PureVPN.
Public and private IPs are further divided into two types: Dynamic and Static IPs. If an IP is static, it means that every time a user or device connects to the internet, they will get the same IP. This is not the case with dynamic IPs, since they keep changing as per the availability of IPs.
PureVPN provides dedicated/static IPs as an add-on. You can select this add-on while you are going through the checkout process at PureVPN.