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CIDR stands for Classless Inter-Domain Routing, an IP addressing scheme. A single IP address can designate many unique IP addresses using CIDR. A CIDR IP address looks like a normal IP address except that it ends with a slash followed by a number, the IP network prefix. CIDR addresses reduce the size of routing tables and make more IP addresses available within organizations.

CIDR to IP Range
CIDR notation converter

Calculate IP range based on CIDR notation to display Total Host, Netmask, Wildcard Bits, the first IP, and the last IP in the subnet range.

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What is an IP address?

An IP address is an address of a device connected to a network or the internet. It's like a phone number but for devices on a network.

IPv4 addresses consist of 32 bits, allowing for a maximum of 4.29 billion addresses. For example: 127.0.0.1

IPv6 addresses consist of 128 bits, allowing for a maximum of 340 undecillion addresses. For example: 2001:db8:85a3:8d3:1319:8a2e:370:7348

IP stands for Internet Protocol, a fundamental concept for the World Wide Web since 1989.

This tool allows you to look up your own IP address or that of another device.

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