An IPv4 IP address is a type of IP address that consists of 32 binary bits. Most of the time, a given IPv4 address has two parts: The host ID part and the network ID part. A subnet mask helps to divide IPv4 addresses into these parts.
The IPv4 address is further broken down into four octets, each representing eight bits. To complete the IPv4 address, each of the four-octet sets is converted into decimal form and then a period is placed between them for separation.