Sometimes N=9, such as when the address starts 00:50:c2. This block is divided into blocks of 4096 instead of the usual 2^24 so small users can get a block for

Sometimes N=9, such as when the address starts 00:50:c2. This block is divided into blocks of 4096 instead of the usual 2^24 so small users can get a block for a few hundred dollars instead of over a thousand.