CIDR is the short for Classless Inter-Domain Routing, an IP addressing scheme that replaces the older system based on classes A, B, and C. A single IP address can be used to designate many unique IP addresses with CIDR. A CIDR IP address looks like a normal IP address except that it ends with a slash followed by a number, called the IP network prefix. CIDR addresses reduce the size of routing tables and make more IP addresses available within organizations. You may watch this video about what is CIDR.

CIDR to IP Range

IP Range To CIDR

IP Address Aggregation

This IP address aggregation feature supports the aggregation of up to 1000 IP addresses in the list into the corresponding CIDR.

Add CIDR Widget To Your Website

You can easily add the CIDR widget on your website by copying the following HTML code and place it on your web page

CIDR to IPv4 Address Range Utility Tool | IPAddressGuide
CIDR to IPv4 Conversion



Widget
<div style="text-align:center">
	<form action="https://www.ipaddressguide.com/cidr" method="post">
		<p style="background:#fff;border:1px solid #99A8AE;width:180px;padding:5px 5px 5px 5px;font-size:11px;font-family:'Trebuchet MS',Arial,Sans-serif;">
			<a href="https://www.ipaddressguide.com" target="_blank"><img src="https://www.ipaddressguide.com/images/ipaddressguide.png" alt="CIDR to IPv4 Address Range Utility Tool | IPAddressGuide" border="0" width="120" height="12" /></a><br />
			<b>CIDR to IPv4 Conversion</b><br /><br />
			<label>CIDR</label><br />
			<input type="text" name="cidr" value="" style="border:solid 1px #C0C0C0;font-size:9px;width:110px;" /><br />
			<input type="submit" value="Calculate" style="width:100px;font-size:10px;margin-top:3px;padding:2px 3px;color:#FFF;background:#8EB50C;border-width:1px;border-style:solid;">
		</p>
	</form>
</div>

Related Articles

What is CIDR

This guide explains about what is CIDR and its benefits.

IPv4 & IPv6 CIDR

This guide explains about IPv4 and IPv6 CIDR.

Convert IP2Location CSV data into IP ranges or CIDR

The article discusses about how to convert IP2Location CSV data into IP ranges or CIDR.

Converting IP address ranges into CIDR format

The article demonstrates how to convert IP addresses ranges into CIDR format.

Converting IP2Proxy data from IP number ranges to CIDR

This guide demonstrates how to convert the IP2Proxy data from IP number ranges to CIDR.

IP2Location IP Geolocation

IP2Location Widgets

IP2Location.io IP Geolocation API

IP Address Map

Unlock Location Insights for FREE

Explore the power of IP2Location's FREE IP geolocation database and API. Elevate your business today!

IP2Location IP Geolocation Free Services