CIDR Generator | Converte IP Range to Subnet

Simply enter the first and last IP addresses in your range, and calculate the corresponding subnet, CIDR, and other network information.


Valid formats: Dotted Decimal FormatTow IP Must Be In The Same Subnet

Quick Example

Click any to use

CIDR Result

CIDR Notation

Network Address

Subnet Mask

Wildcard Mask

Broadcast

Network Bits

Start Range

End Range

Hosts Count

How to Use CIDR Generator

1

Enter the First IP Address

Input the starting IP address of your range. This should be a valid IPv4 address or IPv6 address.

2

Enter the Last IP Address

Input the ending IP address of your range. This should be a valid IP address that comes after the first IP in your range.

3

Get Results

Subnet rusults will be automatically generated and appear in the result field.

Frequently Asked Questions About Subnet and CIDR Notation

A subnet (short for "subnetwork") divides a single large network into smaller, interconnected segments. This segmentation reduces unnecessary traffic by confining communication within the same subnet, minimizing congestion and improving data transfer speeds.
CIDR (Classless Inter-Domain Routing) notation is a compact representation of an IP address and its associated subnet mask. It consists of the IP address followed by a slash and a number (e.g., 192.168.1.0/24). The number indicates the number of network bits in the subnet mask.
Both represent the network portion of an IP address. A subnet mask uses four octets (e.g., 255.255.255.0), while CIDR uses a slash followed by a number (e.g., /24). They are different notations for the same information.