Perfect for supporting your IPv4 network. Perfect for learning Pv6. Perfect for migration.
One of the most popular IP Subnet Calculators in use today was pioneered by Net3 Group, a company formed by Bitcricket founder J. Scott Haugdahl and subsequently acquired by WildPackets. Bitcricket ushers in a modern era rewrite of this tool, improving upon the precedent set by the original with a refreshed GUI, native Windows or Mac operation, and support for IPv6.
- Calculate Subnets Automatically
Simply input an IP address and choose one of the following: number of subnet bits, the maximum number of desired subnets, the number of host bits, or the maximum number of desired hosts. Our calculator figures out the all the rest, giving you a bit-by-bit address visualization and generating a complete table of subnets. Quick. Easy. Painless.
Classless Interdomain Routing, also known as "supernetting," allows multiple IP routes (especially Class C) to be aggregated into a smaller set of routing table entries. Just as with subnetting, the subnet calculator makes it easy to visualize and generate CIDR information.
The Bitcricket subnet calculator is the first to support IPv6. Although there are no subnets in IPv6 per se (and thus no subnet masks), there are several different types of IPv6 addresses and bits/fields within those types have different interpretations. Simply enter an IPv6 address and we classify and dissect it for you. Furthermore, the calculator helps you migrate from IPv4 to IPv6 by supporting the 6 different IPv6 flavors that embed IPv4.
Our calculator runs natively on both Windows and MacOS X. The latest versions of these two operating systems natively support IPv6 by default.
- Auto Discover Configured Addresses
The calculator automatically discovers locally configured IPv4 and IPv6 addresses on both Windows and Mac, allowing you to quickly classify and dissect them.
The information presented in our calculator is a mere cut-and-paste away into your favorite spreadsheet, word processor, or email.
IP Subnet Mask Calculator Windows Vista Style
Choose your platform:
The IP Subnet Calculator is available for both Windows and MacOS X platforms.
Windows
Version 1.1.2007.1126. Runs on Windows 2000, XP, and Vista.
MacOS X
Version 1.1.2007.1126. This is a universal binary that operates on both PPC and Intel-based hardware.
OS X version 10.3.9 or later is required.