Suppose an ISP has a block of IP addresses starting with 144.4.64.0/19. It wants to create sub-blocks out of its available addresses such that it can meet the following requirements:

i. 32 blocks of 64 IP addresses

ii. 32 blocks of 32 IP addresses

iii. 64 blocks of 16 IP addresses

iv. 128 blocks of 8 IP addresses

v. 256 blocks of 4 IP addresses

Design the sub-blocks and give the slash notation for network address and the broadcast address for each sub-block. How many addresses are still available with the ISP after this allocation?

Resource created Saturday 04 September 2021, 10:47:47 AM, last modified Wednesday 27 October 2021, 02:40:33 PM.


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