Answer Description
Each octet of an IP must be between 0-255 but the second octet of this IP is 256. The IP is not an APIPA and DHCP would not affect manually setting a static IP. Classes are used to determine the default subnet mask for an IP but you are not required to use it, therefor the class B address can be used with the class A subnet mask.
Wikipedia
An Internet Protocol address (IP address) is a numerical label such as 192021 that is connected to a computer network that uses the Internet Protocol for communication An IP address serves two main functions: host or network interface identification and location addressing Internet Protocol version 4 (IPv4) defines an IP address as a 32-bit number However, because of the growth of the Internet and the depletion of available IPv4 addresses, a new version of IP (IPv6), using 128 bits for the IP address, was standardized in 1998 IPv6 deployment has been ongoing since the mid-2000s IP addresses are written and displayed in human-readable notations, such as 192
IP_address - Wikipedia, the free encyclopedia