The Open Source Monitoring Conference · 📆 Nov. 17–19, 2026 · 📍Nuremberg · ⭐️20th Anniversary Edition

Subnet computer

Divide a network into subnets: Specify the network address, class and number of subnets or IPs per subnet

IP network address:
Set network class:
Number of desired subnets:
OR
Number of desired hosts (incl. network & broadcast):
Network class:
Subnet mask: or
Number of subnets:
IP addresses/subnet:

Network / Node computer
IP address:
Subnet mask:
Network:
Node/Host:
Broadcast address:

Convert subnet mask
Subnet mask
Length of the subnet mask /

Invert subnet mask
Subnet mask
Inverted subnet mask

Convert IP address
IP address (normal):
OR
IP address (binary)
OR
IP address (hexadecimal):
OR
IP address (decimal):

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QUESTIONS & ANSWERS

The most frequently asked questions on the topic of subnets

What is a subnet and why is it used?

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A subnet is a subdivided part of a larger network. It is used to segment networks, which improves network performance and makes management easier. Subnets also help to use IP addresses more efficiently and reduce data traffic in the network.

How do I calculate the subnet mask and the subnet address?

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The subnet mask determines which part of an IP address is assigned to the network and which part to the host. The subnet address is calculated by logically ANDing the IP address with the subnet mask. These calculations are crucial for creating and managing subnets.

How many hosts can be accommodated in a subnet?

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The number of hosts in a subnet depends on the subnet mask. The more bits are reserved for the network specification, the fewer hosts can be accommodated in a subnet. There are calculation formulas to determine this based on the subnet mask.