Type your subnet mask into cells B1 through B4, tying each byte into a separate cell. Continuing the example, type "255" into cell B1, "255" into B2, "255" into B3 and "224" into B4.

We found several utilities to help calculate IP subnets, subnet ranges, and CIDR addressing. IP Subnet Calculator (free) is a good, basic subnet calculator that shows available subnets based on IP ...

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

Advanced Subnet Calculator (free) provides subnet calculations, does host lookups, and supplies basic whois information on the service provider for a specific IP address. Be prepared for a big ...

Here's an example: Say that I have the same subnet mask as above, 255.255.252.0. This subnet mask in binary is: 11111111 11111111 11111100 00000000 ...

The second part of a TCP/IP address that defines the subnetwork in which the device resides. The subnet ID number is shared with the host ID. See subnet mask and subnet mask tables. THIS ...