IPv4 Range Expander

IPv4 Range Expander

The IPv4 Range Expander takes a CIDR notation range (like 192.168.1.0/24) and expands it into a complete list of every individual IP address in that range. This is useful for network administrators, security professionals, and anyone who needs a full enumeration of IPs within a subnet for firewall rules, access control lists, or network scanning.

使用方法

Enter one or more CIDR ranges in the input field, one per line (e.g., 192.168.1.0/28). Select your preferred output format — one IP per line, comma-separated, or JSON array. Click Expand to generate the full list of IP addresses. Copy the result or download it as a text file.

機能

• CIDR Expansion – Converts any valid CIDR notation into a complete list of IP addresses
• Multiple Ranges – Enter several CIDR ranges at once, one per line
• Output Formats – Choose between newline-separated, comma-separated, or JSON array output
• コピーしてダウンロード – Instantly copy the result or download as a text file
• IP Count – Shows the total number of expanded IP addresses