What is the IPv4 multicast address range?

What is the IPv4 multicast address range?

• A. 224.0.0.0 to 239.255.255.255
• B. 239.0.0.0 to 239.255.255.255
• C. 224.0.0.0 to 224.0.0.255
• D. 255.255.0.0 to 255.255.255.0

Answer: (A)

IPv4 multicast uses a dedicated address space where the first four bits are 1110, placing these addresses in the range 224.0.0.0 to 239.255.255.255. This /4 block is reserved specifically for multicast traffic, keeping it separate from unicast addresses (0.0.0.0 to 223.255.255.255) and the all-ones broadcast (255.255.255.255). The entire multicast space is precisely 224.0.0.0 through 239.255.255.255. The other options describe partial ranges or non-multicast addresses (subnet masks), so they don’t represent the full multicast range.

IPv4 multicast uses a dedicated address space where the first four bits are 1110, placing these addresses in the range 224.0.0.0 to 239.255.255.255. This /4 block is reserved specifically for multicast traffic, keeping it separate from unicast addresses (0.0.0.0 to 223.255.255.255) and the all-ones broadcast (255.255.255.255).

The entire multicast space is precisely 224.0.0.0 through 239.255.255.255. The other options describe partial ranges or non-multicast addresses (subnet masks), so they don’t represent the full multicast range.