An IP address is a unique unique address (identifier) of a computer or other device connected to the Internet.
Any device (laptop, computer, mobile phone, dedicated server, etc.) on the Internet has its own personal IP address. In this case, the device can have a dynamic and static IP address.
Static and dynamic IP are set by the provider. If one fixed address is allocated to some user by the provider - this is a static IP, in the case when the provider allocates an IP address to the user at the time of his connection (from the list of free addresses via DHCP) - this is a dynamic IP.
A dynamic IP address is a dynamically set address for a network device by a service provider using a host configuration protocol.
Most ISPs use DHCP to give IP addresses to user devices while they are connected to the network. Since IPv4 has a small address space, the number of free addresses on the provider's network is limited. Since few users of the provider connect to the Internet at the same time, a free address is given from the pool immediately at the time of connection. This sequence allows you to serve the largest number of clients, in contrast to the real number of free addresses managed by the provider. You can also add that if the client is disconnected from the network, its address is automatically returned to the list of free ones and subsequently can be assigned to another device of another client. Unlike dynamic, static IP addresses are issued to a specific device (even if the device is disconnected from the network).
Without reconfiguring the client computer again connected to the network, the DHCP protocol makes it possible to dynamically assign addresses. Thus, you can become an Internet user who has received a dynamic IP without even knowing about it. For certain purposes, a dynamic IP address is more convenient than a static one. For example, when downloading files from a file hosting service. If you are banned on any resource, then with a dynamic address you can reconnect to the Internet and use this resource again.
A static IP address is the automatically assigned primary address of a device on the network. It does not change over time and constantly identifies the device to which it was originally assigned.
Traditionally, static IP addresses are bound to all servers on the network. This is necessary for their stable functioning. The allocation of a permanent address for the server gives confidence that when you go to this address now, tomorrow and at any time, you will also get access to the same server.
For example, if you organize permanent access from the network to your computer or run a web server on an ongoing basis, for this you need a dedicated static IP address.
A large number of Internet providers offer the service of allocating a static IP address on special paid conditions. Therefore, if you need an IP address (statistical), you need to contact your Internet service provider.