Which class of Internet address provides the fewest network numbers, but the greatest number of hosts per network?

The class of Internet address that provides the fewest network numbers but the greatest number of hosts per network is Class A.

Class A addresses are designed for very large networks and they allocate a significant portion of their address space for hosts. In a Class A address, the first octet is used to identify the network, while the remaining three octets are available for host addresses within that network. This means that a Class A network can support over 16 million individual host addresses, which is the largest capacity compared to other classes.

Given that Class A uses only the first octet to define the network portion, it allows for a total of 128 different networks (from 1.0.0.0 to 127.255.255.255), each capable of hosting a vast number of devices. This structure is particularly useful for organizations that require numerous IP addresses within a single network.

In contrast, Class B addresses allow for a larger number of networks than Class A but with a smaller number of hosts per network, and Class C addresses allow even more networks but limit the number of hosts to a much smaller scale. Class D addresses, on the other hand, are not used for regular addressing but for multicast groups, so they do