IPv4 Range Expander

An IPv4 Range Expander converts CIDR notation (192.168.1.0/24) and IP ranges (192.168.1.1-192.168.1.50) into complete lists of individual IP addresses. It calculates all hosts within a subnet or range, making network planning and configuration management easier.

Our tool supports multiple input formats including CIDR notation, start-end ranges, and subnet masks. It displays the complete list of usable host addresses, network address, broadcast address, and total host count with options to export the results.

Network administrators and security professionals often need to generate complete IP address lists for firewall rules, access control lists, network monitoring, vulnerability scanning, or documentation. Manual calculation is time-consuming and error-prone.

Perfect for DevOps engineers configuring security groups, network administrators planning IP allocations, security teams preparing scan targets, and IT professionals documenting network infrastructure with precise IP inventories.

Security Configuration: Generate IP lists for firewall rules, security group configurations, and access control lists in cloud and on-premise environments.

Network Scanning: Create target lists for vulnerability scanners, network discovery tools, and penetration testing activities with precise IP ranges.

IP Management: Plan IP address allocation, document network segments, and manage DHCP pools by understanding all available addresses in subnets.

Enter an IPv4 range in CIDR notation (e.g., 192.168.1.0/24), range format (192.168.1.1-192.168.1.254), or with subnet mask (192.168.1.0/255.255.255.0). The tool automatically detects the format and validates the input.

View the complete list of all IP addresses in the range, along with network details including network address, broadcast address, subnet mask, wildcard mask, and total number of usable hosts. Copy individual IPs or export the entire list.