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Free online IPv4 CIDR range expander tool. Expand CIDR notation ranges into lists of individual IP addresses for network configuration.
Expands a CIDR range into a complete list of individual IP addresses. Enter any CIDR notation (e.g., 192.168.1.0/30) and see every address in the range with a click-to-copy grid. Includes a warning for large ranges and a bulk copy button.
When provisioning services, whitelisting IPs, or debugging network filters, engineers often need to enumerate every address in a CIDR block. Manually listing them is impractical for ranges larger than a handful of hosts.
Network administrators configuring firewall rules and ACLs, DevOps engineers provisioning cloud resources, and security analysts reviewing IP allow-lists.
Enter a CIDR notation (e.g., 192.168.1.0/24) in the input field
Press Expand or hit Enter to list all addresses in the range
Click any individual IP to copy it to your clipboard
Use the Copy All button to copy the entire list at once
Input: '192.168.1.0/30' — Output: 192.168.1.0, 192.168.1.1, 192.168.1.2, 192.168.1.3 (4 total, 2 usable hosts)Input: '10.0.0.0/29' — Output: 10.0.0.0 through 10.0.0.7 (8 total, 6 usable hosts)The tool supports up to /16 (65,536 addresses) but will warn for ranges over 1,024 IPs.
Yes, all addresses including network and broadcast are listed.
Use the Copy All button to copy the full list to your clipboard for pasting into a file or configuration.
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