The Duplicate IP Scanner Tool scans your subnet (or a range within your subnet) looking for duplicate IPv4 addresses in use by two or more devices. Any duplicates found are shown with their IPv4 address, MAC address, network interface manufacturer name and hostname. Important: to find duplicates on another subnet, you must connect your computer to that subnet.The tool checks every IPv4 address in the range specified and looks for two or more devices using the same IP address.

It scans the IPv4 devices with ARP packets and collects the responses. Any responses from different devices using the same IPv4 address are noted and displayed.

Displays Duplicate IP Addresses along with the MAC Addresses of the Duplicates.

Shows all duplicates along with the IPv4 address, MAC of each device, the manufacturer of each remote device's network interface and the hostname for each IP address (optional).