What is the 1st Octet value range for a Class D IP Address?

Class D IP addresses are specifically designated for multicast groups. The range for the first octet of a Class D address is from 224 to 239. This means that any IP address where the first octet falls within this range is classified as a Class D address, which is utilized primarily for multicast applications where a single packet is sent to multiple destinations.

The significance of this classification lies in the way IP addresses are segmented into different classes to efficiently manage network resources. Class D addresses do not correspond to individual devices but rather facilitate the transmission of data to a group of receivers. Hence, defining the first octet range accurately is crucial for understanding how multicast communication functions within IP networks.

The other ranges provided include those for Class A, B, and C addresses, which serve different purposes and are not relevant to multicast communication.