What is the numeric range for the first octet of a class C IPv4 address?

A class C IPv4 address is defined by the range of its first octet, which is specifically from 192 to 223. This classification is part of the broader IPv4 addressing scheme that divides addresses into classes based on the value of the first octet.

In a class C address, the first octet indicates that the addresses are intended for smaller networks, allowing for up to 254 usable host addresses (from the 192 to 223 range). The class C addresses are typically used in smaller organizations or networks where fewer devices need to connect compared to larger networks, which would use class A or class B addresses.

Understanding this classification is crucial for various networking tasks, such as subnetting and network design, as it helps in determining how to allocate addresses effectively based on the size and needs of the network. Therefore, recognizing that the first octet for class C addresses falls within the range of 192 to 223 is fundamental for identifying and working with these types of IPv4 addresses.