IPv4 Range Expander

Enter an IPv4 range in CIDR notation (e.g., 192.168.1.0/29) or a single IP to see all IP addresses in that range.

Input IPv4 Range

IPv4 Range (CIDR or single IP):

About IPv4 Range Expansion & CIDR

CIDR (Classless Inter-Domain Routing) notation is a compact representation of an IP address and its associated routing prefix. It is written as an IP address, a slash ('/'), and a decimal number indicating the number of leading 1-bits in the subnet mask. For example, 192.168.1.0/24 represents the range from 192.168.1.0 to 192.168.1.255.

This tool expands a given CIDR block or a single IP address into a list of all individual IP addresses within that range. For very large ranges, the display is limited to the first 1024 addresses to maintain browser performance.