For example, here's a common subnet mask in its binary representation: This subnet mask is typically shown in the equivalent, more readable form: Each of the four bytes is eight bits long.

Note how the binary mask has all those zeros growing from right to left. The subnet mask in binary form always has all ones to the left and all zeros to the right. The number of zeros is identical ...

add up the binary bits from both the network portion and the subnet portion for each octet separately, and you will have your subnet mask. The right number and size of subnets When subnetting a ...

Here, you borrow one bit. That means you need to change your subnet mask. Here’s how that works: You started off with 255.255.255.0. In binary, that’s all ones in the first three octets. To borrow, ...

Your IP address and your subnet mask are bitwise "and"ed together (read boolean algebra). 0s hide the number, while 1s let it show through. The resulting binary number is the network address that ...

These bits become a tradeoff based on the network class (A, B or C). Subnet masks for a Class C network (small network) use the first 24 bits for subnet ID and the last 8 for host ID. These last 8 ...

For example, if you have eight networks and each requires 10 hosts, you would use the Class C mask of 255.255.255.240. Why? Because 240 in binary is 11110000, which means you have four subnet bits ...

I have an Excel spreadsheet containing IP addresses and subnet masks. I need to derive the subnet of each IP address in the spreadsheet.<BR><BR>Example: IP (column A): 10.1.230.84, Subnet Mask ...