Skip to content
TelugupalakaAITelugupalakaAI

CIDR / Subnet Calculator

Calculate network bounds, subnet masks, wildcard masks, and assignable IP host ranges from any CIDR prefix.

  • Runs in your browser
  • Free, no sign-up
  • No uploads
Network IP
192.168.1.0

The identification address of this subnet

Broadcast IP
192.168.1.255

Used to broadcast packets to all subnet hosts

Subnet Mask
255.255.255.0

Wildcard mask: 0.0.0.255

Usable Host Range
192.168.1.1 — 192.168.1.254

IP addresses available for assignable devices

Usable Hosts
254

Total addresses: 256

Network Scope
Class C • Private RFC 1918

Prefix length /24

How to use the CIDR / Subnet Calculator

  1. 1

    Enter an IPv4 address and CIDR prefix (e.g. 192.168.1.1/24 or 10.0.0.0/16).

  2. 2

    Instantly view subnet masks, network bounds, and assignable host IP ranges.

Features

Complete Network Scope
Computes network, broadcast, first usable, and last usable IP.
Host Statistics
Calculates usable host capacities for prefixes from /0 to /32.

Frequently asked questions

What is CIDR?

Classless Inter-Domain Routing (CIDR) is a method for allocating IP addresses and routing IP packets.