Enterprise-Class IT Management

Tools for Network & System Engineers

Free Tools

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Our free Advanced Subnet Calculator delivers four tools in one - a classful subnet creator, CIDR calculator, a list generator for subnet addresses, and address details with forward and reverse DNS resolution! 

Advanced Subnet Calculator

Free Advanced IP Subnet Calculator

Advanced IPv4 Subnet Calculator

Are you tired of IP subnet calculators with limitations? Other free subnet calculators only offer one function, do not allow exporting, and usually require a purchase to enable all the features.

The SolarWinds Free Advanced IP Subnet Calculator is completely free and fully functional. In fact, it actually delivers four tools in one - what more could you ask for in a free network monitoring tool?


Need an Even More Powerful IP Address Management Solution?

Add a free trial of IP Address Manager (IPAM) to your download. IPAM frees you from the constraint of only being able to view your IP address space from one laptop and gives you (and your fellow engineers) a convenient Web interface. In addition, IPAM automatically scans the network for IP address changes and maintains a dynamic list of IP addresses, ensuring that you can say goodbye to downtime caused by IP address conflicts.

  • Manage your entire IP infrastructure from an intuitive web console
  • Prevent your subnets and DHCP scopes from filling up with preventative alert notifications
  • Periodically scan your network and Microsoft® DHCP servers for IP address changes
  • Create, schedule, and share reports showing IP address space percent utilization
  • Coordinate team access with role-based access control and track who made each change
  • Scan and track unused IP addresses for free and tag them as available
  • Easily identify non-responsive IP addresses to optimize your IP space