Subnet Calculator
Optimize the subnetting process by starting with subnet scanning and IP subnet discovery
Before you manage subnets, you must know how your network is being used. Until you break down your current network organization, you cannot effectively redesign your network according to subnets or keep up with changes.
Subnet scanning helps document your network by identifying existing subnets, displaying how IP addresses are being used, and referencing subnet lists and IP address lists. The subnet calculator in SolarWinds® Engineer’s Toolset™ (ETS) makes this process quicker and easier.
Master your IP network with a comprehensive, enterprise-grade subnet calculator
If you need to create a new IP subnet or combine existing subnets, you need a subnet calculator to help you with the process. One small mistake can lead to problems in your network. For example, when subnets overlap it can cause routing errors because affected addresses exist in two different subnets.
A subnet range calculator can help you easily and accurately define subnet boundaries and provide you with the needed subnet mask, inverse mask, subnet size, host range, and broadcast address.
Use a subnet calculator to organize your IP address space through IP address tracking
Once you’ve used a subnet calculator’s subnet discovery function to scan your network, the next step in effective IP network management is knowing how each IP address within each subnet is being used. The IP subnet calculator in ETS can help you track which IP addresses are in use or available. This IP tracking helps you understand how each subnet is utilized and assists you in making conflict-free static and reserved IP address assignments.
Easily find out how many subnets you have on your network with a subnet mask calculator
Subnet masks contain valuable information about how many IP addresses are available within a network. Network administrators can use this information to partition their network into subnets more effectively and find host locations.
Finding out how many subnets you have on your network via the subnet mask can be calculated manually, but a subnet mask calculator can do it in a fraction of the time. Plug the IP address range into the subnet mask calculator and it’ll provide the subnet mask.
Leverage over 60 network tools, including a subnet range calculator, to take better control of your network
In addition to an advanced subnet calculator, SolarWinds Engineer’s Toolset has over 60 must-have network tools you can use to optimize your IP network.
Easily monitor IP addresses with tools specially designed for IP management, like DNS Audit, DNS Structure Analyzer, and DNS Scope Monitor. Troubleshoot with enhanced ping capabilities and packet route tracing. Comprehensive alerts, real-time stats, and intuitive graphs keep you apprised of everything happening within your network.
Get More on Subnet Calculators
What does a subnet calculator do?
A subnet calculator is a tool network administrators and IT professionals use to quickly and accurately calculate subnets on a network. Once you enter a range of IP addresses into a subnet calculator, it’ll discover subnets on a seed router and scan the subnet or a range of IP addresses to automatically generate a list of subnets along with their mask, size, range, and broadcast address. An enterprise-grade subnet calculator will also be able to actively monitor subnets to identify and track which IP addresses are in use on your network.
After you have your list of subnets, you can customize them as you see fit. For instance, you can adjust the size of each individual subnet, since not all subnets have to be the same size. If you deal with subnets on a daily basis, a subnet calculator is an indispensable tool to have in your toolset.
How does the subnet calculator work in SolarWinds ETS?
The subnet calculator in SolarWinds Engineer’s Toolset is a first-class, enterprise-grade networking tool built to offer everything network administrators need to calculate subnets quickly and accurately. However, there’s more to managing your IP network than simple subnetting. This subnet calculator optimizes the entire process, from subnet scanning to IP address tracking.
The SolarWinds subnet calculator can:
- Scan your network for subnets and provide address details
- Convert IP addresses into both hex and binary
- Automatically and accurately calculate the subnet, subnet size, mask, inverse mask, broadcast, and host range for any IP address
- Routinely scan your subnets to see how IP addresses are being used to help you make smart IP address assignment decisions
After calculating subnets and subnet masks, you can export, print, and copy your calculations wherever you need them.
This subnet calculator also acts as a Classless Inter-Domain Routing (CIDR) calculator. CIDR is a flexible way of identifying and re-distributing the IP addresses used in inter-domain routing designed to produce more available addresses than standard IP address assignment alone. With CIDR, four Class C IP addresses can yield over 1,000 IPs.
With the subnet calculator in ETS, you can tackle subnetting from multiple angles and continually reorganize your network for optimal performance.
More Tools from Engineer’s Toolset
SolarWinds Engineer’s Toolset has over 60 network engineering tools network administrators can use to monitor their network, proactively solve problems, and keep all devices running on the network running smoothly. In addition to the advanced subnet calculator, ETS offers the following top 10 tools for IP management best practices:
- Subnet List: Scan route tables on a seed router and find all subnets and masks
- IP Network Browser: Scan subnets and uncover all relevant details about them
- MAC Address Discovery: Scan subnets and discover all MAC addresses, IP addresses, and device hostnames connected to local subnets
- DHCP Scope Monitor: Poll DHCP servers and find out which IP scopes only have a few IP addresses remaining
- DNS Structure Analyzer: Visually map out the complex relationships between IP addresses and name servers
- DNS Audit: Scan IP addresses to find DNS errors
- DNS Who Is Resolver: Gather information about IP addresses, network addresses, hostnames, and domain names
- Ping Sweep: Scan a wide range of IP addresses to find out which ones are currently in use
- SNMP Sweep: Scan an IP range and find unused IP addresses
Combine the subnet calculator and any one of these IP management tools with the other tools on SolarWinds Engineer’s Toolset to unlock unmatched networking monitoring and management capabilities.
What does a subnet calculator do?
A subnet calculator is a tool network administrators and IT professionals use to quickly and accurately calculate subnets on a network. Once you enter a range of IP addresses into a subnet calculator, it’ll discover subnets on a seed router and scan the subnet or a range of IP addresses to automatically generate a list of subnets along with their mask, size, range, and broadcast address. An enterprise-grade subnet calculator will also be able to actively monitor subnets to identify and track which IP addresses are in use on your network.
After you have your list of subnets, you can customize them as you see fit. For instance, you can adjust the size of each individual subnet, since not all subnets have to be the same size. If you deal with subnets on a daily basis, a subnet calculator is an indispensable tool to have in your toolset.
“I rely on the Toolset for one place to go to for all my troubleshooting needs. It’s all about having the right tool at the right moment...”
Rschroeder
THWACK
Simplify and optimize IP network management with a subnet calculator
Engineer's Toolset
Use a network subnet calculator to organize your network as effectively as possible.
Uncover how your network is used with an IP subnet calculator with subnet discovery functions.
Combine a subnet range calculator with 60+ must-have network tools.
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