Subnet Calculator

Calculate subnet masks, network ranges, broadcast addresses, and host counts from any IP address and CIDR.

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Network
192.168.1.0
Broadcast
192.168.1.255
Subnet Mask
255.255.255.0
Usable Hosts
254

Details

First Host:192.168.1.1
Last Host:192.168.1.254
Wildcard Mask:0.0.0.255
IP Class:C

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Understanding Subnets

Subnetting is the practice of dividing a network into smaller logical networks. It improves security, reduces congestion, and makes IP address management more efficient.

Frequently Asked Questions

A subnet mask divides an IP address into a network portion and a host portion. It determines which part of the IP address identifies the network and which part identifies individual devices.

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