Finally, a Calculator with teeth!
Are you tired of a Subnet Calculator with limitations? Other Subnet Calculators only do one function, don't allow Exporting, or require you to purchase to enable all the features. The Advanced Subnet Calculator from SolarWinds is COMPLETE and FREE.

The Advanced Subnet Calculator is a free and useful program that comes with four tools in one.

Address Details
Forward and reverse DNS resolution, response time, Address translation (Hexadecimal and Binary) and Address Class information. Also supports resolution of IP Address owner.

Classful Subnet Creator
Full Function Subnet Calculator. No limited functionality! Calculates subnets based on Subnet Mask, Mask Bits, Host Bits, Number of Subnets and Hosts per Subnet.
You can then generate a range of subnets based on these settings.

CIDR Calculator - New Feature
Includes full Support for Inter-Domain Routing (CIDR). Use of CIDR addresses reduce the size of routing tables and make more IP addresses available within organizations.

Subnet Addresses
Will generate a list of addresses for any subnet. This can then becomes the working document to assign addresses. You can even assign addresses within SolarWinds Advanced Subnet Calculator and then print the worksheets . . . or Export to HTML or Excel.