CIDR to IP Range Calculator

CIDR (Classless Inter-Domain Routing) notation is a compact method used to represent IP address ranges in computer networks. While efficient, CIDR notation like “192.168.1.0/24” can be challenging to interpret quickly. Our CIDR to IP Range Calculator transforms these technical notations into clear, usable network information, helping you instantly understand your network’s IP range, usable addresses, and subnet details.

CIDR to IP Range Calculator

Enter CIDR Notation:

Format: IPv4 address followed by prefix length (1-32)

Network Address

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Broadcast Address

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First Usable IP

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Last Usable IP

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Subnet Mask

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Total IP Addresses

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Usable IP Addresses

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Binary Subnet Mask

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What is CIDR and Why Does it Matter?

CIDR (Classless Inter-Domain Routing) notation is a compact way to specify IP address ranges in computer networks. While powerful and efficient, CIDR notation (like 192.168.1.0/24) can be challenging to interpret at a glance. Our calculator bridges this gap, instantly translating CIDR notation into practical network information that network administrators, IT professionals, and developers can use.

Understanding CIDR Notation

CIDR notation consists of two parts:

An IP address (e.g., 192.168.1.0)
A prefix length (e.g., /24) indicating how many bits are used for the network portion

For example, 192.168.1.0/24 represents:

A network starting at 192.168.1.0
With 256 total IP addresses (192.168.1.0 to 192.168.1.255)
Including 254 usable addresses for devices

How Our CIDR to IP Range Calculator Helps?

Our CIDR calculator simplifies network planning and configuration by providing:

Instant IP Range Information

Network and broadcast addresses
First and last usable IP addresses
Total number of available IPs
Subnet mask in decimal and binary

Practical Applications

Network design and segmentation
Firewall rule configuration
Access control list (ACL) setup
IP address allocation planning
Subnet configuration

Key Benefits

Real-time calculations
Easy-to-copy results
Clear error validation
Mobile-friendly interface

Who Should Use This CIDR to IP Range Calculator?

Network Administrators
- Planning network segmentation
- Configuring routers and switches
- Managing IP address allocation
Security Professionals
- Setting up firewall rules
- Configuring network security policies
- Defining access control lists
Developers
- Configuring cloud resources
- Setting up development environments
- Managing container networks
IT Students
- Learning networking concepts
- Understanding subnetting
- Practicing network design

How to Use the CIDR to IP Range Calculator?

Enter your CIDR notation (e.g., 192.168.1.0/24)
Results are calculated automatically
Use the copy buttons to easily transfer values
Check for any validation errors in red

Understanding the Results

The calculator provides:

Network Information

Network Address: The starting address of your network
Broadcast Address: The last address in your network
First Usable IP: The first address available for devices
Last Usable IP: The last address available for devices

Technical Details

Subnet Mask: The mask defining your network boundaries
Total IPs: The complete number of addresses in the range
Usable IPs: The number of addresses available for devices
Binary Subnet Mask: The binary representation for advanced configuration

Best Practices

When using this calculator for network planning:

Start with your total address requirements
Consider future growth needs
Account for reserved addresses (network, broadcast)
Document your network segments
Verify configurations before implementation

Enjoyed this CIDR to IP Range Calculator? Then be sured to check out our other network guides.