Recent content by regbreeze

So if I have 10.0.0.0 and i want a subnet mask for 2048 subnets, i do 2^12=4096-2=4094. Default Subnet mask for a class A address is 11111111.00000000.00000000.00000000 plus the 12 bits I need to borrow, so thats 11111111.11111111.11110000.00000000 which is 255.255.240.0 Can someone confirm?

Greetings! My son has asked me a question and I would like to impress him by answering it. How many possible subnets are there in 10.0.0.0/19 and how many useable hosts are there in each subnet? And how the heck do you work it out! I do remember a bit about subnetting from a job a few years...