Given the block as 130.56.0.0/16
now to create 1024 subnets, we need to select 10 bits from the Host_ID part, so now from :
130.56._ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _
if we select 10 bits then,
First subnet address will be 130.56.00000000.00 000000 --> (130.56.0.0)
Second subnet address will be 130.56.00000000.01 000000 --> (130.56.0.64)
Third subnet address will be 130.56.00000000.10 000000 --> (130.56.0.128)
so on … till the
Last subnet address will be 130.56.11111111.11 000000 --> (130.56.255.192)
So first and last address of the 1024 subnet are (130.56.255.192) and (130.56.255.255) respectively.